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Action: GEOMETRIC_PATH

Module mapping
Description Usage
Distance along and from a path calculated using geometric formulas used in 1 tutorialsused in 0 eggs

Details and examples

Distance along and from a path calculated using geometric formulas

The Path Collective Variables developed by Branduardi and that are described in the first paper that is cited below alow one to compute the progress along a high-dimensional path and the distance from the high-dimensional path. The method introduced in that paper is implemented in the shortcut PATH. This action provides an implementation of the alternative method for calculating the position on and distance from the path that was proposed by Diaz Leines and Ensing in the second paper that is cited below. In their method, the progress along the path is calculated using:

where and are the vectors connecting the current position to the closest and second closest node of the path, respectfully and and are the projections of the closest and second closest frames of the path. , meanwhile, is the vector connecting the closest frame to the second closest frame. The distance from the path, is calculated using:

The symbols here are as they were for .

Please note that the shortcut GPATH provides an interface to this action that is less flexible than using this action directly but that is easier to use.

Examples

The example input below shows how to use this action

Click on the labels of the actions for more information on what each action computes
tested on2.11
#SETTINGS INPUTFILES=regtest/mapping/rt-adapt/mypath.pdb
# Calculate the instaneous position in the high dimensional space
d1: DISTANCECalculate the distance/s between pairs of atoms. More details ATOMSthe pair of atom that we are calculating the distance between=1,2 COMPONENTS calculate the x, y and z components of the distance separately and store them as label
# Read in the refence coordinates from the path
ref_d1x: PDB2CONSTANTCreate a constant value from a PDB input file This action is a shortcut and it has hidden defaults. More details REFERENCEa file in pdb format containing the reference structure=
regtest/mapping/rt-adapt/mypath.pdb
Click here to see an extract from this file.
×

FILE: regtest/mapping/rt-adapt/mypath.pdb

REMARK d1.x=1.12000000000000000000 d1.y=-.60000000000000000000 path=-0.4
END
REMARK d1.x=.99000000000000000000 d1.y=-.45000000000000000000 path=-0.3 
END
REMARK d1.x=.86000000000000000000 d1.y=-.30000000000000000000 path=-0.2 
END
REMARK d1.x=.73000000000000000000 d1.y=-.15000000000000000000 path=-0.1
END
REMARK d1.x=.60000000000000000000 d1.y=0 path=0
END
REMARK d1.x=.47000000000000000000 d1.y=.15000000000000000000 path=0.1
END
REMARK d1.x=.34000000000000000000 d1.y=.30000000000000000000 path=0.2
END
REMARK d1.x=.21000000000000000000 d1.y=.45000000000000000000 path=0.3
END
REMARK d1.x=.08000000000000000000 d1.y=.60000000000000000000 path=0.4 
END
REMARK d1.x=-.05000000000000000000 d1.y=.75000000000000000000 path=0.5
END
REMARK d1.x=-.18000000000000000000 d1.y=.90000000000000000000 path=0.6
END
REMARK d1.x=-.31000000000000000000 d1.y=1.05000000000000000000 path=0.7 
END
REMARK d1.x=-.44000000000000000000 d1.y=1.20000000000000000000 path=0.8
END
REMARK d1.x=-.57000000000000000000 d1.y=1.35000000000000000000 path=0.9
END
REMARK d1.x=-.70000000000000000000 d1.y=1.50000000000000000000 path=1.0
END
REMARK d1.x=-.83000000000000000000 d1.y=1.65000000000000000000 path=1.1
END
REMARK d1.x=-.96000000000000000000 d1.y=1.80000000000000000000 path=1.2
END
REMARK d1.x=-1.09000000000000000000 d1.y=1.95000000000000000000 path=1.3
END
REMARK d1.x=-1.22000000000000000000 d1.y=2.10000000000000000000 path=1.4
END
REMARK d1.x=-1.35000000000000000000 d1.y=2.25000000000000000000 path=1.5
END
ARGread this single argument from the input rather than the atomic structure=d1.x
ref_d1y: PDB2CONSTANTCreate a constant value from a PDB input file This action is a shortcut and it has hidden defaults. More details REFERENCEa file in pdb format containing the reference structure=
regtest/mapping/rt-adapt/mypath.pdb
Click here to see an extract from this file.
×

FILE: regtest/mapping/rt-adapt/mypath.pdb

REMARK d1.x=1.12000000000000000000 d1.y=-.60000000000000000000 path=-0.4
END
REMARK d1.x=.99000000000000000000 d1.y=-.45000000000000000000 path=-0.3 
END
REMARK d1.x=.86000000000000000000 d1.y=-.30000000000000000000 path=-0.2 
END
REMARK d1.x=.73000000000000000000 d1.y=-.15000000000000000000 path=-0.1
END
REMARK d1.x=.60000000000000000000 d1.y=0 path=0
END
REMARK d1.x=.47000000000000000000 d1.y=.15000000000000000000 path=0.1
END
REMARK d1.x=.34000000000000000000 d1.y=.30000000000000000000 path=0.2
END
REMARK d1.x=.21000000000000000000 d1.y=.45000000000000000000 path=0.3
END
REMARK d1.x=.08000000000000000000 d1.y=.60000000000000000000 path=0.4 
END
REMARK d1.x=-.05000000000000000000 d1.y=.75000000000000000000 path=0.5
END
REMARK d1.x=-.18000000000000000000 d1.y=.90000000000000000000 path=0.6
END
REMARK d1.x=-.31000000000000000000 d1.y=1.05000000000000000000 path=0.7 
END
REMARK d1.x=-.44000000000000000000 d1.y=1.20000000000000000000 path=0.8
END
REMARK d1.x=-.57000000000000000000 d1.y=1.35000000000000000000 path=0.9
END
REMARK d1.x=-.70000000000000000000 d1.y=1.50000000000000000000 path=1.0
END
REMARK d1.x=-.83000000000000000000 d1.y=1.65000000000000000000 path=1.1
END
REMARK d1.x=-.96000000000000000000 d1.y=1.80000000000000000000 path=1.2
END
REMARK d1.x=-1.09000000000000000000 d1.y=1.95000000000000000000 path=1.3
END
REMARK d1.x=-1.22000000000000000000 d1.y=2.10000000000000000000 path=1.4
END
REMARK d1.x=-1.35000000000000000000 d1.y=2.25000000000000000000 path=1.5
END
ARGread this single argument from the input rather than the atomic structure=d1.y
path: CONSTANTCreate a constant value that can be passed to actions This action has hidden defaults. More details VALUESthe numbers that are in your constant value=-0.4,-0.3,-0.2,-0.1,0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.0,1.1,1.2,1.3,1.4,1.5 # Now calculate the differences between our instantaneous position and the milestones on the high dimensional space d1_dataP: DISPLACEMENTCalculate the displacement vector between the pair of input vectors This action is a shortcut. More details ARG2The point that we are calculating the distance to=d1.x,d1.y ARG1The point that we are calculating the distance from=ref_d1x,ref_d1y # We need the vectors pointing from the reference positions to the instantaneous positions here which is # minus the vector calculated above. Remember we can only specify the vectors in ARG1 for the DISPLACEMENT command d1_data: CUSTOMCalculate a combination of variables using a custom expression. More details ARGthe values input to this function=d1_dataP FUNCthe function you wish to evaluate=-x PERIODICif the output of your function is periodic then you should specify the periodicity of the function=NO # And finally the path CV pp: GEOMETRIC_PATHDistance along and from a path calculated using geometric formulas More details ARGthe labels of the matrix that contains the vectors of displacements from each frame in the path=d1_data METRICthe method to use for computing the displacement vectors between the reference frames={DIFFERENCE} REFERENCElabels for actions that contain reference coordinates for each point on the path=ref_d1x,ref_d1y PROPERTYthe label of a value that contains the coordinates we are projecting these points onto=path PRINTPrint quantities to a file. More details ARGthe labels of the values that you would like to print to the file=d1.x,d1.y,pp.* FILEthe name of the file on which to output these quantities=colvar

The curved path here is defined using a series of points in a two dimensional space. The input above includes actions (PDB2CONSTANT) that set up constant values that hold the values of the arguments for each of the milestones on the path. A DISPLACEMENT shortcut is then used to calculate the vectors connecting each of the path milestones to the instantenous coordinates of the system in the high dimensional space. Notice, how the METRIC keyword is used in the input to GEOMETRIC_PATH. This keyword is necessary as the vectors connecting adjacent milestones on the path appear in the equations for and above. The METRIC keyword tells this action how distances between frames should be calculated. There are essentially two options that we have tested here. You can use DIFFERENCE as has been done above. In that case the assumption is the path milestones are vectors of coordinates and the difference between two of them, and , can be calculated as:

with periodic variables treated appropriately. Alternatively, the path milestones might be the positions of atoms and you may want to calculate differences between them using an RMSD action as has been done in the example below.

Click on the labels of the actions for more information on what each action computes
tested on2.11
##SETTINGS INPUTFILES=regtest/trajectories/path_msd/all.pdb
# Positions for all the frames in the path
path: CONSTANTCreate a constant value that can be passed to actions This action has hidden defaults. More details VALUESthe numbers that are in your constant value=1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42
# Calculate the vectors connecting the instantaneous position to the path milesones
vecs: RMSDCalculate the RMSD with respect to a reference structure. This action is a shortcut and it has hidden defaults. More details DISPLACEMENT Calculate the vector of displacements instead of the length of this vector SQUARED  This should be setted if you want MSD instead of RMSD  REFERENCEa file in pdb format containing the reference structure and the atoms involved in the CV=
regtest/trajectories/path_msd/all.pdb
Click here to see an extract from this file.
×

FILE: regtest/trajectories/path_msd/all.pdb

ATOM      1  CL  ALA     1      -3.171   0.295   2.045  1.00  1.00
ATOM      5  CLP ALA     1      -1.819  -0.143   1.679  1.00  1.00
ATOM      6  OL  ALA     1      -1.177  -0.889   2.401  1.00  1.00
ATOM      7  NL  ALA     1      -1.313   0.341   0.529  1.00  1.00
ATOM      8  HL  ALA     1      -1.845   0.961  -0.011  1.00  1.00
ATOM      9  CA  ALA     1      -0.003  -0.019   0.021  1.00  1.00
ATOM     10  HA  ALA     1       0.205  -1.051   0.259  1.00  1.00
ATOM     11  CB  ALA     1       0.009   0.135  -1.509  1.00  1.00
ATOM     15  CRP ALA     1       1.121   0.799   0.663  1.00  1.00
ATOM     16  OR  ALA     1       1.723   1.669   0.043  1.00  1.00
ATOM     17  NR  ALA     1       1.423   0.519   1.941  1.00  1.00
ATOM     18  HR  ALA     1       0.873  -0.161   2.413  1.00  1.00
ATOM     19  CR  ALA     1       2.477   1.187   2.675  1.00  1.00
END
FIXED
ATOM      1  CL  ALA     1      -3.175   0.365   2.024  1.00  1.00
ATOM      5  CLP ALA     1      -1.814  -0.106   1.685  1.00  1.00
ATOM      6  OL  ALA     1      -1.201  -0.849   2.425  1.00  1.00
ATOM      7  NL  ALA     1      -1.296   0.337   0.534  1.00  1.00
ATOM      8  HL  ALA     1      -1.807   0.951  -0.044  1.00  1.00
ATOM      9  CA  ALA     1       0.009  -0.067   0.033  1.00  1.00
ATOM     10  HA  ALA     1       0.175  -1.105   0.283  1.00  1.00
ATOM     11  CB  ALA     1       0.027   0.046  -1.501  1.00  1.00
ATOM     15  CRP ALA     1       1.149   0.725   0.654  1.00  1.00
ATOM     16  OR  ALA     1       1.835   1.491  -0.011  1.00  1.00
ATOM     17  NR  ALA     1       1.380   0.537   1.968  1.00  1.00
ATOM     18  HR  ALA     1       0.764  -0.060   2.461  1.00  1.00
ATOM     19  CR  ALA     1       2.431   1.195   2.683  1.00  1.00
END
ATOM      1  CL  ALA     1      -2.990   0.383   2.277  1.00  1.00
ATOM      5  CLP ALA     1      -1.664  -0.085   1.831  1.00  1.00
ATOM      6  OL  ALA     1      -0.987  -0.835   2.533  1.00  1.00
ATOM      7  NL  ALA     1      -1.227   0.364   0.646  1.00  1.00
ATOM      8  HL  ALA     1      -1.798   0.982   0.124  1.00  1.00
ATOM      9  CA  ALA     1       0.026  -0.028   0.044  1.00  1.00
ATOM     10  HA  ALA     1       0.224  -1.060   0.284  1.00  1.00
ATOM     11  CB  ALA     1      -0.076   0.107  -1.483  1.00  1.00
ATOM     15  CRP ALA     1       1.217   0.776   0.577  1.00  1.00
ATOM     16  OR  ALA     1       1.900   1.463  -0.158  1.00  1.00
ATOM     17  NR  ALA     1       1.494   0.666   1.888  1.00  1.00
ATOM     18  HR  ALA     1       0.882   0.122   2.437  1.00  1.00
ATOM     19  CR  ALA     1       2.580   1.341   2.529  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.006   0.350   2.252  1.00  1.00
ATOM      5  CLP ALA     1      -1.680  -0.112   1.826  1.00  1.00
ATOM      6  OL  ALA     1      -1.025  -0.896   2.508  1.00  1.00
ATOM      7  NL  ALA     1      -1.220   0.368   0.654  1.00  1.00
ATOM      8  HL  ALA     1      -1.771   1.013   0.137  1.00  1.00
ATOM      9  CA  ALA     1       0.040  -0.029   0.062  1.00  1.00
ATOM     10  HA  ALA     1       0.210  -1.076   0.277  1.00  1.00
ATOM     11  CB  ALA     1      -0.066   0.148  -1.465  1.00  1.00
ATOM     15  CRP ALA     1       1.241   0.738   0.605  1.00  1.00
ATOM     16  OR  ALA     1       1.986   1.347  -0.125  1.00  1.00
ATOM     17  NR  ALA     1       1.446   0.694   1.940  1.00  1.00
ATOM     18  HR  ALA     1       0.796   0.210   2.481  1.00  1.00
ATOM     19  CR  ALA     1       2.544   1.350   2.582  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.002   0.343   2.271  1.00  1.00
ATOM      5  CLP ALA     1      -1.672  -0.125   1.828  1.00  1.00
ATOM      6  OL  ALA     1      -1.028  -0.942   2.486  1.00  1.00
ATOM      7  NL  ALA     1      -1.213   0.373   0.670  1.00  1.00
ATOM      8  HL  ALA     1      -1.752   1.033   0.169  1.00  1.00
ATOM      9  CA  ALA     1       0.041  -0.032   0.055  1.00  1.00
ATOM     10  HA  ALA     1       0.201  -1.079   0.245  1.00  1.00
ATOM     11  CB  ALA     1      -0.079   0.194  -1.466  1.00  1.00
ATOM     15  CRP ALA     1       1.257   0.720   0.601  1.00  1.00
ATOM     16  OR  ALA     1       2.057   1.240  -0.140  1.00  1.00
ATOM     17  NR  ALA     1       1.422   0.730   1.942  1.00  1.00
ATOM     18  HR  ALA     1       0.740   0.303   2.500  1.00  1.00
ATOM     19  CR  ALA     1       2.528   1.373   2.598  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.144   1.457   1.417  1.00  1.00
ATOM      5  CLP ALA     1      -1.943   0.587   1.450  1.00  1.00
ATOM      6  OL  ALA     1      -1.588   0.028   2.480  1.00  1.00
ATOM      7  NL  ALA     1      -1.281   0.449   0.306  1.00  1.00
ATOM      8  HL  ALA     1      -1.578   0.914  -0.520  1.00  1.00
ATOM      9  CA  ALA     1      -0.132  -0.428   0.139  1.00  1.00
ATOM     10  HA  ALA     1      -0.264  -1.291   0.758  1.00  1.00
ATOM     11  CB  ALA     1      -0.066  -0.855  -1.329  1.00  1.00
ATOM     15  CRP ALA     1       1.193   0.220   0.554  1.00  1.00
ATOM     16  OR  ALA     1       2.195   0.098  -0.140  1.00  1.00
ATOM     17  NR  ALA     1       1.224   0.872   1.737  1.00  1.00
ATOM     18  HR  ALA     1       0.399   0.943   2.273  1.00  1.00
ATOM     19  CR  ALA     1       2.413   1.511   2.254  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.140   1.441   1.453  1.00  1.00
ATOM      5  CLP ALA     1      -1.944   0.576   1.465  1.00  1.00
ATOM      6  OL  ALA     1      -1.587  -0.018   2.487  1.00  1.00
ATOM      7  NL  ALA     1      -1.274   0.465   0.322  1.00  1.00
ATOM      8  HL  ALA     1      -1.571   0.957  -0.486  1.00  1.00
ATOM      9  CA  ALA     1      -0.124  -0.418   0.135  1.00  1.00
ATOM     10  HA  ALA     1      -0.274  -1.304   0.729  1.00  1.00
ATOM     11  CB  ALA     1      -0.063  -0.813  -1.347  1.00  1.00
ATOM     15  CRP ALA     1       1.201   0.199   0.572  1.00  1.00
ATOM     16  OR  ALA     1       2.227   0.007  -0.072  1.00  1.00
ATOM     17  NR  ALA     1       1.215   0.910   1.709  1.00  1.00
ATOM     18  HR  ALA     1       0.369   1.020   2.200  1.00  1.00
ATOM     19  CR  ALA     1       2.393   1.536   2.237  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.140   1.420   1.442  1.00  1.00
ATOM      5  CLP ALA     1      -1.948   0.546   1.448  1.00  1.00
ATOM      6  OL  ALA     1      -1.618  -0.065   2.460  1.00  1.00
ATOM      7  NL  ALA     1      -1.255   0.469   0.311  1.00  1.00
ATOM      8  HL  ALA     1      -1.538   0.979  -0.490  1.00  1.00
ATOM      9  CA  ALA     1      -0.107  -0.412   0.124  1.00  1.00
ATOM     10  HA  ALA     1      -0.257  -1.312   0.685  1.00  1.00
ATOM     11  CB  ALA     1      -0.028  -0.770  -1.375  1.00  1.00
ATOM     15  CRP ALA     1       1.217   0.186   0.600  1.00  1.00
ATOM     16  OR  ALA     1       2.269  -0.069   0.026  1.00  1.00
ATOM     17  NR  ALA     1       1.193   0.966   1.687  1.00  1.00
ATOM     18  HR  ALA     1       0.333   1.114   2.120  1.00  1.00
ATOM     19  CR  ALA     1       2.377   1.589   2.240  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.110   1.698   0.880  1.00  1.00
ATOM      5  CLP ALA     1      -2.021   0.734   1.142  1.00  1.00
ATOM      6  OL  ALA     1      -1.859   0.257   2.258  1.00  1.00
ATOM      7  NL  ALA     1      -1.229   0.414   0.114  1.00  1.00
ATOM      8  HL  ALA     1      -1.371   0.826  -0.771  1.00  1.00
ATOM      9  CA  ALA     1      -0.173  -0.593   0.188  1.00  1.00
ATOM     10  HA  ALA     1      -0.481  -1.374   0.851  1.00  1.00
ATOM     11  CB  ALA     1       0.011  -1.180  -1.220  1.00  1.00
ATOM     15  CRP ALA     1       1.163  -0.060   0.716  1.00  1.00
ATOM     16  OR  ALA     1       2.227  -0.564   0.393  1.00  1.00
ATOM     17  NR  ALA     1       1.127   0.960   1.594  1.00  1.00
ATOM     18  HR  ALA     1       0.234   1.295   1.847  1.00  1.00
ATOM     19  CR  ALA     1       2.303   1.549   2.172  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.139   1.652   0.924  1.00  1.00
ATOM      5  CLP ALA     1      -2.039   0.698   1.169  1.00  1.00
ATOM      6  OL  ALA     1      -1.868   0.201   2.278  1.00  1.00
ATOM      7  NL  ALA     1      -1.239   0.411   0.139  1.00  1.00
ATOM      8  HL  ALA     1      -1.385   0.842  -0.737  1.00  1.00
ATOM      9  CA  ALA     1      -0.173  -0.574   0.193  1.00  1.00
ATOM     10  HA  ALA     1      -0.477  -1.381   0.833  1.00  1.00
ATOM     11  CB  ALA     1       0.029  -1.142  -1.231  1.00  1.00
ATOM     15  CRP ALA     1       1.162  -0.048   0.731  1.00  1.00
ATOM     16  OR  ALA     1       2.220  -0.597   0.472  1.00  1.00
ATOM     17  NR  ALA     1       1.122   1.024   1.537  1.00  1.00
ATOM     18  HR  ALA     1       0.233   1.395   1.752  1.00  1.00
ATOM     19  CR  ALA     1       2.300   1.629   2.102  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.706   1.088   0.468  1.00  1.00
ATOM      5  CLP ALA     1      -2.458   0.598   1.082  1.00  1.00
ATOM      6  OL  ALA     1      -2.390   0.404   2.277  1.00  1.00
ATOM      7  NL  ALA     1      -1.427   0.382   0.258  1.00  1.00
ATOM      8  HL  ALA     1      -1.513   0.559  -0.713  1.00  1.00
ATOM      9  CA  ALA     1      -0.157  -0.192   0.685  1.00  1.00
ATOM     10  HA  ALA     1      -0.343  -0.912   1.470  1.00  1.00
ATOM     11  CB  ALA     1       0.462  -0.936  -0.512  1.00  1.00
ATOM     15  CRP ALA     1       0.840   0.814   1.241  1.00  1.00
ATOM     16  OR  ALA     1       2.034   0.549   1.354  1.00  1.00
ATOM     17  NR  ALA     1       0.368   2.017   1.650  1.00  1.00
ATOM     18  HR  ALA     1      -0.613   2.169   1.589  1.00  1.00
ATOM     19  CR  ALA     1       1.215   3.044   2.195  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.699   1.173   0.487  1.00  1.00
ATOM      5  CLP ALA     1      -2.464   0.631   1.079  1.00  1.00
ATOM      6  OL  ALA     1      -2.402   0.386   2.275  1.00  1.00
ATOM      7  NL  ALA     1      -1.434   0.437   0.260  1.00  1.00
ATOM      8  HL  ALA     1      -1.516   0.652  -0.701  1.00  1.00
ATOM      9  CA  ALA     1      -0.174  -0.174   0.667  1.00  1.00
ATOM     10  HA  ALA     1      -0.377  -0.924   1.411  1.00  1.00
ATOM     11  CB  ALA     1       0.451  -0.859  -0.570  1.00  1.00
ATOM     15  CRP ALA     1       0.839   0.801   1.280  1.00  1.00
ATOM     16  OR  ALA     1       1.999   0.474   1.468  1.00  1.00
ATOM     17  NR  ALA     1       0.404   2.024   1.627  1.00  1.00
ATOM     18  HR  ALA     1      -0.565   2.225   1.505  1.00  1.00
ATOM     19  CR  ALA     1       1.262   3.025   2.214  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.653   0.990   1.121  1.00  1.00
ATOM      5  CLP ALA     1      -2.321   0.364   1.249  1.00  1.00
ATOM      6  OL  ALA     1      -2.006  -0.222   2.265  1.00  1.00
ATOM      7  NL  ALA     1      -1.498   0.501   0.205  1.00  1.00
ATOM      8  HL  ALA     1      -1.794   0.978  -0.603  1.00  1.00
ATOM      9  CA  ALA     1      -0.190  -0.127   0.128  1.00  1.00
ATOM     10  HA  ALA     1      -0.216  -1.086   0.627  1.00  1.00
ATOM     11  CB  ALA     1       0.159  -0.359  -1.359  1.00  1.00
ATOM     15  CRP ALA     1       0.933   0.668   0.793  1.00  1.00
ATOM     16  OR  ALA     1       2.107   0.313   0.705  1.00  1.00
ATOM     17  NR  ALA     1       0.604   1.770   1.498  1.00  1.00
ATOM     18  HR  ALA     1      -0.359   1.986   1.593  1.00  1.00
ATOM     19  CR  ALA     1       1.573   2.595   2.158  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.641   0.954   1.179  1.00  1.00
ATOM      5  CLP ALA     1      -2.294   0.335   1.290  1.00  1.00
ATOM      6  OL  ALA     1      -1.964  -0.273   2.288  1.00  1.00
ATOM      7  NL  ALA     1      -1.485   0.499   0.235  1.00  1.00
ATOM      8  HL  ALA     1      -1.803   0.995  -0.564  1.00  1.00
ATOM      9  CA  ALA     1      -0.175  -0.118   0.130  1.00  1.00
ATOM     10  HA  ALA     1      -0.203  -1.077   0.601  1.00  1.00
ATOM     11  CB  ALA     1       0.162  -0.300  -1.355  1.00  1.00
ATOM     15  CRP ALA     1       0.952   0.671   0.815  1.00  1.00
ATOM     16  OR  ALA     1       2.104   0.260   0.791  1.00  1.00
ATOM     17  NR  ALA     1       0.633   1.808   1.450  1.00  1.00
ATOM     18  HR  ALA     1      -0.328   2.065   1.503  1.00  1.00
ATOM     19  CR  ALA     1       1.608   2.627   2.129  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.635   0.925   1.244  1.00  1.00
ATOM      5  CLP ALA     1      -2.297   0.305   1.309  1.00  1.00
ATOM      6  OL  ALA     1      -1.941  -0.334   2.290  1.00  1.00
ATOM      7  NL  ALA     1      -1.500   0.490   0.251  1.00  1.00
ATOM      8  HL  ALA     1      -1.827   1.009  -0.537  1.00  1.00
ATOM      9  CA  ALA     1      -0.178  -0.110   0.119  1.00  1.00
ATOM     10  HA  ALA     1      -0.205  -1.094   0.536  1.00  1.00
ATOM     11  CB  ALA     1       0.147  -0.217  -1.379  1.00  1.00
ATOM     15  CRP ALA     1       0.943   0.643   0.832  1.00  1.00
ATOM     16  OR  ALA     1       2.074   0.198   0.871  1.00  1.00
ATOM     17  NR  ALA     1       0.637   1.821   1.423  1.00  1.00
ATOM     18  HR  ALA     1      -0.311   2.123   1.418  1.00  1.00
ATOM     19  CR  ALA     1       1.602   2.629   2.109  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.632   0.856   1.331  1.00  1.00
ATOM      5  CLP ALA     1      -2.282   0.250   1.355  1.00  1.00
ATOM      6  OL  ALA     1      -1.906  -0.403   2.301  1.00  1.00
ATOM      7  NL  ALA     1      -1.515   0.478   0.275  1.00  1.00
ATOM      8  HL  ALA     1      -1.860   0.990  -0.485  1.00  1.00
ATOM      9  CA  ALA     1      -0.192  -0.105   0.098  1.00  1.00
ATOM     10  HA  ALA     1      -0.204  -1.121   0.473  1.00  1.00
ATOM     11  CB  ALA     1       0.129  -0.136  -1.408  1.00  1.00
ATOM     15  CRP ALA     1       0.931   0.615   0.844  1.00  1.00
ATOM     16  OR  ALA     1       2.043   0.122   0.934  1.00  1.00
ATOM     17  NR  ALA     1       0.651   1.819   1.388  1.00  1.00
ATOM     18  HR  ALA     1      -0.283   2.155   1.349  1.00  1.00
ATOM     19  CR  ALA     1       1.624   2.595   2.115  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.628   0.823   1.358  1.00  1.00
ATOM      5  CLP ALA     1      -2.277   0.241   1.370  1.00  1.00
ATOM      6  OL  ALA     1      -1.871  -0.396   2.325  1.00  1.00
ATOM      7  NL  ALA     1      -1.525   0.469   0.284  1.00  1.00
ATOM      8  HL  ALA     1      -1.898   0.970  -0.482  1.00  1.00
ATOM      9  CA  ALA     1      -0.195  -0.094   0.086  1.00  1.00
ATOM     10  HA  ALA     1      -0.203  -1.122   0.423  1.00  1.00
ATOM     11  CB  ALA     1       0.146  -0.058  -1.413  1.00  1.00
ATOM     15  CRP ALA     1       0.919   0.599   0.874  1.00  1.00
ATOM     16  OR  ALA     1       1.997   0.065   1.039  1.00  1.00
ATOM     17  NR  ALA     1       0.655   1.830   1.373  1.00  1.00
ATOM     18  HR  ALA     1      -0.248   2.200   1.261  1.00  1.00
ATOM     19  CR  ALA     1       1.625   2.581   2.124  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.539   0.055   1.657  1.00  1.00
ATOM      5  CLP ALA     1      -2.117  -0.208   1.378  1.00  1.00
ATOM      6  OL  ALA     1      -1.453  -0.902   2.125  1.00  1.00
ATOM      7  NL  ALA     1      -1.602   0.351   0.289  1.00  1.00
ATOM      8  HL  ALA     1      -2.185   0.875  -0.310  1.00  1.00
ATOM      9  CA  ALA     1      -0.243   0.129  -0.186  1.00  1.00
ATOM     10  HA  ALA     1      -0.041  -0.924  -0.159  1.00  1.00
ATOM     11  CB  ALA     1      -0.153   0.625  -1.651  1.00  1.00
ATOM     15  CRP ALA     1       0.852   0.806   0.637  1.00  1.00
ATOM     16  OR  ALA     1       2.007   0.400   0.594  1.00  1.00
ATOM     17  NR  ALA     1       0.508   1.855   1.401  1.00  1.00
ATOM     18  HR  ALA     1      -0.445   2.112   1.454  1.00  1.00
ATOM     19  CR  ALA     1       1.460   2.569   2.226  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.578   0.084   1.603  1.00  1.00
ATOM      5  CLP ALA     1      -2.140  -0.156   1.375  1.00  1.00
ATOM      6  OL  ALA     1      -1.473  -0.732   2.197  1.00  1.00
ATOM      7  NL  ALA     1      -1.623   0.335   0.237  1.00  1.00
ATOM      8  HL  ALA     1      -2.220   0.753  -0.416  1.00  1.00
ATOM      9  CA  ALA     1      -0.253   0.120  -0.195  1.00  1.00
ATOM     10  HA  ALA     1      -0.048  -0.931  -0.153  1.00  1.00
ATOM     11  CB  ALA     1      -0.128   0.612  -1.663  1.00  1.00
ATOM     15  CRP ALA     1       0.823   0.801   0.637  1.00  1.00
ATOM     16  OR  ALA     1       1.969   0.367   0.665  1.00  1.00
ATOM     17  NR  ALA     1       0.477   1.912   1.333  1.00  1.00
ATOM     18  HR  ALA     1      -0.468   2.199   1.317  1.00  1.00
ATOM     19  CR  ALA     1       1.410   2.627   2.163  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.113   1.661   1.504  1.00  1.00
ATOM      5  CLP ALA     1      -1.769   1.059   1.566  1.00  1.00
ATOM      6  OL  ALA     1      -1.201   0.940   2.629  1.00  1.00
ATOM      7  NL  ALA     1      -1.219   0.714   0.392  1.00  1.00
ATOM      8  HL  ALA     1      -1.742   0.797  -0.435  1.00  1.00
ATOM      9  CA  ALA     1       0.058   0.023   0.242  1.00  1.00
ATOM     10  HA  ALA     1      -0.001  -0.896   0.782  1.00  1.00
ATOM     11  CB  ALA     1       0.235  -0.295  -1.249  1.00  1.00
ATOM     15  CRP ALA     1       1.299   0.757   0.745  1.00  1.00
ATOM     16  OR  ALA     1       2.276   0.138   1.135  1.00  1.00
ATOM     17  NR  ALA     1       1.277   2.102   0.736  1.00  1.00
ATOM     18  HR  ALA     1       0.447   2.567   0.458  1.00  1.00
ATOM     19  CR  ALA     1       2.391   2.896   1.191  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.089   1.850   1.546  1.00  1.00
ATOM      5  CLP ALA     1      -1.667   1.457   1.629  1.00  1.00
ATOM      6  OL  ALA     1      -0.974   1.868   2.533  1.00  1.00
ATOM      7  NL  ALA     1      -1.204   0.683   0.642  1.00  1.00
ATOM      8  HL  ALA     1      -1.844   0.360  -0.021  1.00  1.00
ATOM      9  CA  ALA     1       0.126   0.105   0.564  1.00  1.00
ATOM     10  HA  ALA     1       0.239  -0.555   1.391  1.00  1.00
ATOM     11  CB  ALA     1       0.215  -0.722  -0.739  1.00  1.00
ATOM     15  CRP ALA     1       1.311   1.068   0.623  1.00  1.00
ATOM     16  OR  ALA     1       2.369   0.726   1.149  1.00  1.00
ATOM     17  NR  ALA     1       1.156   2.292   0.077  1.00  1.00
ATOM     18  HR  ALA     1       0.273   2.549  -0.285  1.00  1.00
ATOM     19  CR  ALA     1       2.201   3.277   0.107  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.102   1.775   1.619  1.00  1.00
ATOM      5  CLP ALA     1      -1.661   1.466   1.659  1.00  1.00
ATOM      6  OL  ALA     1      -0.945   1.961   2.476  1.00  1.00
ATOM      7  NL  ALA     1      -1.205   0.663   0.688  1.00  1.00
ATOM      8  HL  ALA     1      -1.854   0.269   0.091  1.00  1.00
ATOM      9  CA  ALA     1       0.147   0.134   0.561  1.00  1.00
ATOM     10  HA  ALA     1       0.300  -0.545   1.355  1.00  1.00
ATOM     11  CB  ALA     1       0.237  -0.632  -0.776  1.00  1.00
ATOM     15  CRP ALA     1       1.306   1.133   0.628  1.00  1.00
ATOM     16  OR  ALA     1       2.361   0.819   1.176  1.00  1.00
ATOM     17  NR  ALA     1       1.129   2.345   0.068  1.00  1.00
ATOM     18  HR  ALA     1       0.252   2.577  -0.315  1.00  1.00
ATOM     19  CR  ALA     1       2.150   3.364   0.108  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.137   1.689   1.564  1.00  1.00
ATOM      5  CLP ALA     1      -1.674   1.466   1.595  1.00  1.00
ATOM      6  OL  ALA     1      -0.991   2.041   2.377  1.00  1.00
ATOM      7  NL  ALA     1      -1.178   0.640   0.664  1.00  1.00
ATOM      8  HL  ALA     1      -1.829   0.190   0.106  1.00  1.00
ATOM      9  CA  ALA     1       0.192   0.170   0.547  1.00  1.00
ATOM     10  HA  ALA     1       0.347  -0.550   1.313  1.00  1.00
ATOM     11  CB  ALA     1       0.333  -0.536  -0.821  1.00  1.00
ATOM     15  CRP ALA     1       1.325   1.194   0.686  1.00  1.00
ATOM     16  OR  ALA     1       2.348   0.906   1.293  1.00  1.00
ATOM     17  NR  ALA     1       1.165   2.398   0.103  1.00  1.00
ATOM     18  HR  ALA     1       0.311   2.617  -0.339  1.00  1.00
ATOM     19  CR  ALA     1       2.173   3.424   0.206  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.342   1.726   1.297  1.00  1.00
ATOM      5  CLP ALA     1      -1.882   1.644   1.449  1.00  1.00
ATOM      6  OL  ALA     1      -1.296   2.423   2.124  1.00  1.00
ATOM      7  NL  ALA     1      -1.259   0.684   0.740  1.00  1.00
ATOM      8  HL  ALA     1      -1.839   0.091   0.256  1.00  1.00
ATOM      9  CA  ALA     1       0.138   0.295   0.784  1.00  1.00
ATOM     10  HA  ALA     1       0.267  -0.321   1.638  1.00  1.00
ATOM     11  CB  ALA     1       0.437  -0.541  -0.481  1.00  1.00
ATOM     15  CRP ALA     1       1.207   1.385   0.899  1.00  1.00
ATOM     16  OR  ALA     1       2.160   1.248   1.674  1.00  1.00
ATOM     17  NR  ALA     1       1.092   2.478   0.129  1.00  1.00
ATOM     18  HR  ALA     1       0.291   2.586  -0.440  1.00  1.00
ATOM     19  CR  ALA     1       2.044   3.567   0.190  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.361   1.726   1.315  1.00  1.00
ATOM      5  CLP ALA     1      -1.890   1.687   1.423  1.00  1.00
ATOM      6  OL  ALA     1      -1.302   2.522   2.029  1.00  1.00
ATOM      7  NL  ALA     1      -1.285   0.691   0.757  1.00  1.00
ATOM      8  HL  ALA     1      -1.865   0.049   0.326  1.00  1.00
ATOM      9  CA  ALA     1       0.123   0.321   0.749  1.00  1.00
ATOM     10  HA  ALA     1       0.270  -0.331   1.585  1.00  1.00
ATOM     11  CB  ALA     1       0.408  -0.470  -0.534  1.00  1.00
ATOM     15  CRP ALA     1       1.192   1.410   0.900  1.00  1.00
ATOM     16  OR  ALA     1       2.114   1.273   1.701  1.00  1.00
ATOM     17  NR  ALA     1       1.111   2.493   0.112  1.00  1.00
ATOM     18  HR  ALA     1       0.326   2.609  -0.490  1.00  1.00
ATOM     19  CR  ALA     1       2.068   3.578   0.188  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.419   1.747   1.251  1.00  1.00
ATOM      5  CLP ALA     1      -1.947   1.630   1.371  1.00  1.00
ATOM      6  OL  ALA     1      -1.331   2.379   2.060  1.00  1.00
ATOM      7  NL  ALA     1      -1.380   0.668   0.616  1.00  1.00
ATOM      8  HL  ALA     1      -1.992   0.115   0.104  1.00  1.00
ATOM      9  CA  ALA     1       0.007   0.227   0.571  1.00  1.00
ATOM     10  HA  ALA     1       0.086  -0.578   1.262  1.00  1.00
ATOM     11  CB  ALA     1       0.288  -0.306  -0.835  1.00  1.00
ATOM     15  CRP ALA     1       1.132   1.190   0.974  1.00  1.00
ATOM     16  OR  ALA     1       1.974   0.858   1.808  1.00  1.00
ATOM     17  NR  ALA     1       1.199   2.390   0.352  1.00  1.00
ATOM     18  HR  ALA     1       0.482   2.643  -0.277  1.00  1.00
ATOM     19  CR  ALA     1       2.218   3.363   0.657  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.430   1.748   1.261  1.00  1.00
ATOM      5  CLP ALA     1      -1.958   1.650   1.340  1.00  1.00
ATOM      6  OL  ALA     1      -1.333   2.471   1.961  1.00  1.00
ATOM      7  NL  ALA     1      -1.392   0.653   0.642  1.00  1.00
ATOM      8  HL  ALA     1      -2.018   0.061   0.177  1.00  1.00
ATOM      9  CA  ALA     1      -0.005   0.219   0.569  1.00  1.00
ATOM     10  HA  ALA     1       0.083  -0.615   1.230  1.00  1.00
ATOM     11  CB  ALA     1       0.266  -0.275  -0.863  1.00  1.00
ATOM     15  CRP ALA     1       1.126   1.166   0.993  1.00  1.00
ATOM     16  OR  ALA     1       1.918   0.834   1.868  1.00  1.00
ATOM     17  NR  ALA     1       1.248   2.346   0.359  1.00  1.00
ATOM     18  HR  ALA     1       0.548   2.609  -0.299  1.00  1.00
ATOM     19  CR  ALA     1       2.271   3.308   0.675  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.438   1.702   1.306  1.00  1.00
ATOM      5  CLP ALA     1      -1.962   1.659   1.317  1.00  1.00
ATOM      6  OL  ALA     1      -1.332   2.532   1.870  1.00  1.00
ATOM      7  NL  ALA     1      -1.406   0.632   0.671  1.00  1.00
ATOM      8  HL  ALA     1      -2.029   0.002   0.252  1.00  1.00
ATOM      9  CA  ALA     1      -0.007   0.228   0.554  1.00  1.00
ATOM     10  HA  ALA     1       0.103  -0.631   1.184  1.00  1.00
ATOM     11  CB  ALA     1       0.255  -0.224  -0.899  1.00  1.00
ATOM     15  CRP ALA     1       1.124   1.169   1.002  1.00  1.00
ATOM     16  OR  ALA     1       1.889   0.829   1.901  1.00  1.00
ATOM     17  NR  ALA     1       1.265   2.342   0.365  1.00  1.00
ATOM     18  HR  ALA     1       0.590   2.614  -0.306  1.00  1.00
ATOM     19  CR  ALA     1       2.313   3.280   0.698  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.441   1.677   1.342  1.00  1.00
ATOM      5  CLP ALA     1      -1.971   1.666   1.304  1.00  1.00
ATOM      6  OL  ALA     1      -1.348   2.594   1.774  1.00  1.00
ATOM      7  NL  ALA     1      -1.408   0.602   0.696  1.00  1.00
ATOM      8  HL  ALA     1      -2.050  -0.062   0.329  1.00  1.00
ATOM      9  CA  ALA     1      -0.014   0.235   0.538  1.00  1.00
ATOM     10  HA  ALA     1       0.114  -0.660   1.127  1.00  1.00
ATOM     11  CB  ALA     1       0.223  -0.161  -0.935  1.00  1.00
ATOM     15  CRP ALA     1       1.115   1.153   1.020  1.00  1.00
ATOM     16  OR  ALA     1       1.857   0.813   1.931  1.00  1.00
ATOM     17  NR  ALA     1       1.290   2.335   0.385  1.00  1.00
ATOM     18  HR  ALA     1       0.632   2.617  -0.298  1.00  1.00
ATOM     19  CR  ALA     1       2.337   3.252   0.749  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.443   1.670   1.352  1.00  1.00
ATOM      5  CLP ALA     1      -1.973   1.670   1.295  1.00  1.00
ATOM      6  OL  ALA     1      -1.351   2.609   1.744  1.00  1.00
ATOM      7  NL  ALA     1      -1.409   0.597   0.704  1.00  1.00
ATOM      8  HL  ALA     1      -2.050  -0.076   0.355  1.00  1.00
ATOM      9  CA  ALA     1      -0.014   0.237   0.533  1.00  1.00
ATOM     10  HA  ALA     1       0.119  -0.663   1.113  1.00  1.00
ATOM     11  CB  ALA     1       0.217  -0.147  -0.945  1.00  1.00
ATOM     15  CRP ALA     1       1.115   1.152   1.023  1.00  1.00
ATOM     16  OR  ALA     1       1.849   0.808   1.938  1.00  1.00
ATOM     17  NR  ALA     1       1.296   2.334   0.388  1.00  1.00
ATOM     18  HR  ALA     1       0.638   2.620  -0.293  1.00  1.00
ATOM     19  CR  ALA     1       2.342   3.249   0.754  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.451   1.630   1.422  1.00  1.00
ATOM      5  CLP ALA     1      -1.983   1.689   1.248  1.00  1.00
ATOM      6  OL  ALA     1      -1.374   2.689   1.550  1.00  1.00
ATOM      7  NL  ALA     1      -1.421   0.569   0.756  1.00  1.00
ATOM      8  HL  ALA     1      -2.045  -0.151   0.513  1.00  1.00
ATOM      9  CA  ALA     1      -0.017   0.248   0.499  1.00  1.00
ATOM     10  HA  ALA     1       0.149  -0.681   1.023  1.00  1.00
ATOM     11  CB  ALA     1       0.171  -0.057  -0.999  1.00  1.00
ATOM     15  CRP ALA     1       1.111   1.147   1.033  1.00  1.00
ATOM     16  OR  ALA     1       1.807   0.781   1.969  1.00  1.00
ATOM     17  NR  ALA     1       1.327   2.329   0.410  1.00  1.00
ATOM     18  HR  ALA     1       0.679   2.635  -0.277  1.00  1.00
ATOM     19  CR  ALA     1       2.372   3.237   0.799  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.331   1.449   1.617  1.00  1.00
ATOM      5  CLP ALA     1      -1.868   1.399   1.408  1.00  1.00
ATOM      6  OL  ALA     1      -1.169   2.255   1.904  1.00  1.00
ATOM      7  NL  ALA     1      -1.424   0.371   0.676  1.00  1.00
ATOM      8  HL  ALA     1      -2.118  -0.203   0.289  1.00  1.00
ATOM      9  CA  ALA     1      -0.062   0.001   0.310  1.00  1.00
ATOM     10  HA  ALA     1      -0.008  -1.054   0.497  1.00  1.00
ATOM     11  CB  ALA     1       0.131   0.162  -1.216  1.00  1.00
ATOM     15  CRP ALA     1       1.142   0.546   1.099  1.00  1.00
ATOM     16  OR  ALA     1       1.741  -0.171   1.894  1.00  1.00
ATOM     17  NR  ALA     1       1.537   1.815   0.864  1.00  1.00
ATOM     18  HR  ALA     1       0.963   2.391   0.297  1.00  1.00
ATOM     19  CR  ALA     1       2.669   2.426   1.513  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.321   1.436   1.650  1.00  1.00
ATOM      5  CLP ALA     1      -1.870   1.422   1.372  1.00  1.00
ATOM      6  OL  ALA     1      -1.182   2.323   1.789  1.00  1.00
ATOM      7  NL  ALA     1      -1.422   0.347   0.697  1.00  1.00
ATOM      8  HL  ALA     1      -2.106  -0.263   0.374  1.00  1.00
ATOM      9  CA  ALA     1      -0.057   0.008   0.290  1.00  1.00
ATOM     10  HA  ALA     1       0.002  -1.051   0.446  1.00  1.00
ATOM     11  CB  ALA     1       0.113   0.213  -1.212  1.00  1.00
ATOM     15  CRP ALA     1       1.139   0.538   1.102  1.00  1.00
ATOM     16  OR  ALA     1       1.724  -0.196   1.881  1.00  1.00
ATOM     17  NR  ALA     1       1.539   1.803   0.879  1.00  1.00
ATOM     18  HR  ALA     1       0.972   2.397   0.326  1.00  1.00
ATOM     19  CR  ALA     1       2.672   2.407   1.539  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.318   1.434   1.657  1.00  1.00
ATOM      5  CLP ALA     1      -1.871   1.426   1.363  1.00  1.00
ATOM      6  OL  ALA     1      -1.186   2.341   1.756  1.00  1.00
ATOM      7  NL  ALA     1      -1.422   0.343   0.704  1.00  1.00
ATOM      8  HL  ALA     1      -2.101  -0.279   0.398  1.00  1.00
ATOM      9  CA  ALA     1      -0.058   0.010   0.290  1.00  1.00
ATOM     10  HA  ALA     1       0.005  -1.051   0.433  1.00  1.00
ATOM     11  CB  ALA     1       0.109   0.227  -1.215  1.00  1.00
ATOM     15  CRP ALA     1       1.138   0.536   1.100  1.00  1.00
ATOM     16  OR  ALA     1       1.723  -0.202   1.878  1.00  1.00
ATOM     17  NR  ALA     1       1.539   1.802   0.887  1.00  1.00
ATOM     18  HR  ALA     1       0.970   2.398   0.335  1.00  1.00
ATOM     19  CR  ALA     1       2.675   2.402   1.547  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.297   1.417   1.700  1.00  1.00
ATOM      5  CLP ALA     1      -1.874   1.437   1.310  1.00  1.00
ATOM      6  OL  ALA     1      -1.214   2.432   1.560  1.00  1.00
ATOM      7  NL  ALA     1      -1.412   0.320   0.746  1.00  1.00
ATOM      8  HL  ALA     1      -2.060  -0.372   0.544  1.00  1.00
ATOM      9  CA  ALA     1      -0.065   0.025   0.282  1.00  1.00
ATOM     10  HA  ALA     1       0.023  -1.051   0.357  1.00  1.00
ATOM     11  CB  ALA     1       0.071   0.308  -1.213  1.00  1.00
ATOM     15  CRP ALA     1       1.141   0.510   1.103  1.00  1.00
ATOM     16  OR  ALA     1       1.724  -0.245   1.863  1.00  1.00
ATOM     17  NR  ALA     1       1.541   1.794   0.938  1.00  1.00
ATOM     18  HR  ALA     1       0.957   2.397   0.401  1.00  1.00
ATOM     19  CR  ALA     1       2.683   2.371   1.604  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.283   1.421   1.730  1.00  1.00
ATOM      5  CLP ALA     1      -1.874   1.449   1.277  1.00  1.00
ATOM      6  OL  ALA     1      -1.222   2.476   1.436  1.00  1.00
ATOM      7  NL  ALA     1      -1.405   0.299   0.773  1.00  1.00
ATOM      8  HL  ALA     1      -2.034  -0.422   0.640  1.00  1.00
ATOM      9  CA  ALA     1      -0.063   0.028   0.272  1.00  1.00
ATOM     10  HA  ALA     1       0.015  -1.050   0.307  1.00  1.00
ATOM     11  CB  ALA     1       0.057   0.364  -1.214  1.00  1.00
ATOM     15  CRP ALA     1       1.134   0.492   1.093  1.00  1.00
ATOM     16  OR  ALA     1       1.729  -0.288   1.825  1.00  1.00
ATOM     17  NR  ALA     1       1.539   1.779   0.976  1.00  1.00
ATOM     18  HR  ALA     1       0.945   2.388   0.456  1.00  1.00
ATOM     19  CR  ALA     1       2.682   2.335   1.653  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.265   1.435   1.760  1.00  1.00
ATOM      5  CLP ALA     1      -1.868   1.457   1.257  1.00  1.00
ATOM      6  OL  ALA     1      -1.229   2.500   1.343  1.00  1.00
ATOM      7  NL  ALA     1      -1.398   0.292   0.802  1.00  1.00
ATOM      8  HL  ALA     1      -2.014  -0.454   0.728  1.00  1.00
ATOM      9  CA  ALA     1      -0.067   0.024   0.264  1.00  1.00
ATOM     10  HA  ALA     1       0.011  -1.049   0.257  1.00  1.00
ATOM     11  CB  ALA     1       0.028   0.426  -1.206  1.00  1.00
ATOM     15  CRP ALA     1       1.144   0.464   1.092  1.00  1.00
ATOM     16  OR  ALA     1       1.748  -0.346   1.781  1.00  1.00
ATOM     17  NR  ALA     1       1.532   1.754   1.029  1.00  1.00
ATOM     18  HR  ALA     1       0.931   2.385   0.536  1.00  1.00
ATOM     19  CR  ALA     1       2.676   2.280   1.721  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.236   1.453   1.772  1.00  1.00
ATOM      5  CLP ALA     1      -1.865   1.473   1.217  1.00  1.00
ATOM      6  OL  ALA     1      -1.244   2.522   1.222  1.00  1.00
ATOM      7  NL  ALA     1      -1.388   0.292   0.824  1.00  1.00
ATOM      8  HL  ALA     1      -1.982  -0.485   0.827  1.00  1.00
ATOM      9  CA  ALA     1      -0.066   0.031   0.248  1.00  1.00
ATOM     10  HA  ALA     1       0.018  -1.048   0.230  1.00  1.00
ATOM     11  CB  ALA     1       0.011   0.464  -1.213  1.00  1.00
ATOM     15  CRP ALA     1       1.144   0.452   1.088  1.00  1.00
ATOM     16  OR  ALA     1       1.767  -0.373   1.737  1.00  1.00
ATOM     17  NR  ALA     1       1.517   1.749   1.061  1.00  1.00
ATOM     18  HR  ALA     1       0.906   2.387   0.586  1.00  1.00
ATOM     19  CR  ALA     1       2.660   2.262   1.754  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.225   1.461   1.784  1.00  1.00
ATOM      5  CLP ALA     1      -1.878   1.466   1.191  1.00  1.00
ATOM      6  OL  ALA     1      -1.276   2.527   1.106  1.00  1.00
ATOM      7  NL  ALA     1      -1.375   0.274   0.839  1.00  1.00
ATOM      8  HL  ALA     1      -1.947  -0.517   0.921  1.00  1.00
ATOM      9  CA  ALA     1      -0.077   0.024   0.236  1.00  1.00
ATOM     10  HA  ALA     1       0.009  -1.048   0.194  1.00  1.00
ATOM     11  CB  ALA     1      -0.004   0.503  -1.214  1.00  1.00
ATOM     15  CRP ALA     1       1.144   0.436   1.066  1.00  1.00
ATOM     16  OR  ALA     1       1.800  -0.403   1.678  1.00  1.00
ATOM     17  NR  ALA     1       1.483   1.736   1.091  1.00  1.00
ATOM     18  HR  ALA     1       0.861   2.388   0.647  1.00  1.00
ATOM     19  CR  ALA     1       2.642   2.246   1.792  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.212   1.465   1.797  1.00  1.00
ATOM      5  CLP ALA     1      -1.874   1.470   1.168  1.00  1.00
ATOM      6  OL  ALA     1      -1.286   2.526   1.008  1.00  1.00
ATOM      7  NL  ALA     1      -1.363   0.265   0.860  1.00  1.00
ATOM      8  HL  ALA     1      -1.914  -0.534   1.016  1.00  1.00
ATOM      9  CA  ALA     1      -0.074   0.012   0.232  1.00  1.00
ATOM     10  HA  ALA     1       0.001  -1.058   0.173  1.00  1.00
ATOM     11  CB  ALA     1      -0.020   0.528  -1.210  1.00  1.00
ATOM     15  CRP ALA     1       1.147   0.408   1.060  1.00  1.00
ATOM     16  OR  ALA     1       1.827  -0.445   1.625  1.00  1.00
ATOM     17  NR  ALA     1       1.461   1.721   1.140  1.00  1.00
ATOM     18  HR  ALA     1       0.821   2.361   0.731  1.00  1.00
ATOM     19  CR  ALA     1       2.614   2.214   1.845  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.185   1.487   1.790  1.00  1.00
ATOM      5  CLP ALA     1      -1.865   1.480   1.139  1.00  1.00
ATOM      6  OL  ALA     1      -1.293   2.532   0.896  1.00  1.00
ATOM      7  NL  ALA     1      -1.349   0.268   0.862  1.00  1.00
ATOM      8  HL  ALA     1      -1.881  -0.527   1.095  1.00  1.00
ATOM      9  CA  ALA     1      -0.065   0.013   0.226  1.00  1.00
ATOM     10  HA  ALA     1      -0.006  -1.063   0.151  1.00  1.00
ATOM     11  CB  ALA     1      -0.019   0.539  -1.224  1.00  1.00
ATOM     15  CRP ALA     1       1.170   0.398   1.031  1.00  1.00
ATOM     16  OR  ALA     1       1.871  -0.463   1.540  1.00  1.00
ATOM     17  NR  ALA     1       1.447   1.706   1.159  1.00  1.00
ATOM     18  HR  ALA     1       0.788   2.362   0.800  1.00  1.00
ATOM     19  CR  ALA     1       2.602   2.205   1.868  1.00  1.00
END
ATOM      1  CL  ALA     1      -3.257   1.605   1.105  1.00  1.00
ATOM      5  CLP ALA     1      -1.941   1.459   0.447  1.00  1.00
ATOM      6  OL  ALA     1      -1.481   2.369  -0.223  1.00  1.00
ATOM      7  NL  ALA     1      -1.303   0.291   0.647  1.00  1.00
ATOM      8  HL  ALA     1      -1.743  -0.379   1.229  1.00  1.00
ATOM      9  CA  ALA     1      -0.011  -0.077   0.099  1.00  1.00
ATOM     10  HA  ALA     1       0.155  -1.099   0.417  1.00  1.00
ATOM     11  CB  ALA     1       0.001  -0.097  -1.439  1.00  1.00
ATOM     15  CRP ALA     1       1.191   0.673   0.683  1.00  1.00
ATOM     16  OR  ALA     1       2.015   0.103   1.375  1.00  1.00
ATOM     17  NR  ALA     1       1.303   1.983   0.393  1.00  1.00
ATOM     18  HR  ALA     1       0.553   2.411  -0.109  1.00  1.00
ATOM     19  CR  ALA     1       2.395   2.811   0.843  1.00  1.00
END
FIXED
TYPE the manner in which RMSD alignment is performed=OPTIMAL
p1b: GEOMETRIC_PATHDistance along and from a path calculated using geometric formulas More details ARGthe labels of the matrix that contains the vectors of displacements from each frame in the path=vecs.disp REFERENCElabels for actions that contain reference coordinates for each point on the path=vecs_ref METRICthe method to use for computing the displacement vectors between the reference frames={RMSD DISPLACEMENT TYPE=OPTIMAL ALIGN=1,1,1,1,1,1,1,1,1,1,1,1,1 DISPLACE=1,1,1,1,1,1,1,1,1,1,1,1,1} PROPERTYthe label of a value that contains the coordinates we are projecting these points onto=path METRIC_COMPONENTif the final action in your metric contains multiple components this keyword is used to specify the component that should be used=disp PRINTPrint quantities to a file. More details ARGthe labels of the values that you would like to print to the file=p1b.* FILEthe name of the file on which to output these quantities=colvar_b STRIDE the frequency with which the quantities of interest should be output=1

Here an RMSD action with label vecs is used to calculate the vector connecting the instantaneous position and each of the path milestones. These vectors thus describe how far each atom has been displaced in going from one structure to the other in a way that neglects translation of the center of mass and rotation of the reference frame. When we compute the formula aboves, which include the vectors that connect various milestone configurations on our path we must compute the vector connecting the milestones using the same approach. The input associated with the METRIC keyword is thus the same input as was used in the RMSD action that was used to calculate the vectors connecting the milestones to the instantaneous configuration. Furthermore, we must also use METRIC_COMPONENT here to specify that it is the disp component of the RMSD action that contains the vector of interest.

It is worth noting that the METRIC keyword in the inputs above can accept inputs for one or multiple PLUMED actions. There is thus flexibility to implement more complicated variants on the geometric path implemented here by using the input for different actions as input to the METRIC keyword. If you are interested in using these features you can look at the code within src/mapping/PathProjectionCalculator.h andsrc/mapping/PathProjectionCalculator.cpp` to see how this method called a separate PLUMED instance to calculate the vectors connecting the various milesones in the path.

Input

The arguments that serve as the input for this action are specified using one or more of the keywords in the following table.

Keyword Type Description
ARG matrix the labels of the matrix that contains the vectors of displacements from each frame in the path
REFERENCE vector labels for actions that contain reference coordinates for each point on the path
PROPERTY vector the label of a value that contains the coordinates we are projecting these points onto

Output components

This action calculates the values in the following table. These values can be referenced elsewhere in the input by using this Action's label followed by a dot and the name of the value required from the list below.

Name Type Description
s scalar the position on the path
z scalar the distance from the path

Full list of keywords

The following table describes the keywords and options that can be used with this action

Keyword Type Default Description
ARG input none the labels of the matrix that contains the vectors of displacements from each frame in the path
REFERENCE input none labels for actions that contain reference coordinates for each point on the path
PROPERTY input none the label of a value that contains the coordinates we are projecting these points onto
METRIC compulsory none the method to use for computing the displacement vectors between the reference frames
METRIC_COMPONENT compulsory none if the final action in your metric contains multiple components this keyword is used to specify the component that should be used

References

More information about how this action can be used is available in the following articles: