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(Created page with "== Acknowledgement == This pymol script is made by Troels Emtekær Linnet. This script is based on the scaffold from ColorByRMSD. Peace love and harmony goes to Shivender Sh...")
 
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== Acknowledgement ==
+
{{Infobox script-repo
This pymol script is made by Troels Emtekær Linnet.
+
|type      = script
 
+
|filename  = colorbydisplacement.py
This script is based on the scaffold from [[ColorByRMSD]]. Peace love and harmony goes to Shivender Shandilya and Jason Vertrees.
+
|author    = [[User:Tlinnet|Troels E. Linnet]]
 +
|license  = BSD
 +
}}
  
 
== Introduction ==
 
== Introduction ==
This script allows you to color two structures by distance displacement between an Open and Closed form of a protein, as calculated by PyMol's internal distance command. The pairwise distance is calculated between, C-alpha or all-atoms. The distance displacement values are stored as B-factors of these residues, which are colored by a ''rainbow'' color spectrum, with blue specifying minimum  and red indicating maximum.
+
This script allows you to color two structures by distance displacement between an Open and Closed form of a protein, as calculated by PyMol's internal distance command. The pairwise distance is calculated between all-atoms. The distance displacement values are stored as B-factors of these residues, which are colored by a ''rainbow'' color spectrum, with blue specifying minimum  and red indicating maximum.
  
== Code ==
 
 
Do keep in mind, all original B-factors values are overwritten!
 
Do keep in mind, all original B-factors values are overwritten!
  
There exist two versions. <br>
+
There exist one version. <br>
ColorByDisplacement'''CA''' is quick and is between CA atoms. Ideal for helices representation. <br>
 
 
ColorByDisplacement'''All''' is between All atoms in residues and is quite slow => 3-5 mins for a run. Ideal for sticks representation.
 
ColorByDisplacement'''All''' is between All atoms in residues and is quite slow => 3-5 mins for a run. Ideal for sticks representation.
  
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=== Examples ===
 
=== Examples ===
<source lang="python">
+
<syntaxhighlight lang="python">
ColorByDisplacementCA O5NT, C5NT, super1=resi 26-355, super2=resi 26-355, doColor=t, doAlign=t
 
 
ColorByDisplacementAll O5NT, C5NT, super1=resi 26-355, super2=resi 26-355, doColor=t, doAlign=t
 
ColorByDisplacementAll O5NT, C5NT, super1=resi 26-355, super2=resi 26-355, doColor=t, doAlign=t
  
ColorByDisplacementCA O5NT, C5NT, super1=resi 26-355, super2=resi 26-355, doColor=t, doAlign=t, AlignedWhite='no'
 
 
ColorByDisplacementAll O5NT, C5NT, super1=resi 26-355, super2=resi 26-355, doColor=t, doAlign=t, AlignedWhite='no'
 
ColorByDisplacementAll O5NT, C5NT, super1=resi 26-355, super2=resi 26-355, doColor=t, doAlign=t, AlignedWhite='no'
 
+
</syntaxhighlight>
ColorByDisplacementCA O5NT, C5NT, resi 26-355, resi 26-355
 
ColorByDisplacementAll O5NT, C5NT, resi 26-355, resi 26-355
 
</source>
 
  
 
<gallery heights="240px" widths="340px">
 
<gallery heights="240px" widths="340px">
Image:ColorByDisplacement-CA-1.png|ColorByDisplacementCA used on 1HP1 and 1HPU aligned and colored by distance displacement.
 
Image:ColorByDisplacement-CA-2.png|ColorByDisplacementCA used on 1HP1 and 1HPU aligned and colored by distance displacement.
 
 
Image:ColorByDisplacement-All-1.png|ColorByDisplacementAll used on 1HP1 and 1HPU aligned and colored by distance displacement.
 
Image:ColorByDisplacement-All-1.png|ColorByDisplacementAll used on 1HP1 and 1HPU aligned and colored by distance displacement.
 
Image:ColorByDisplacement-All-2.png|ColorByDisplacementAll used on 1HP1 and 1HPU aligned and colored by distance displacement.
 
Image:ColorByDisplacement-All-2.png|ColorByDisplacementAll used on 1HP1 and 1HPU aligned and colored by distance displacement.
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Residues not in both pdb files is colored black
 
Residues not in both pdb files is colored black
  
== Example Pymol Script ==
+
== Example 1 ==
<source lang="python">
+
{{Template:PymolScriptRepoDownload|examples/colorbydisplacement_1.pml}}
cd C:\Users\tlinnet\Documents\My Dropbox\Speciale\5NT-project\Mutant-construct\Distance-Plot
+
<include src="https://raw.github.com/Pymol-Scripts/Pymol-script-repo/master/examples/colorbydisplacement_1.pml" highlight="python" />
#cd /homes/linnet/Documents/Speciale/5NT-project/Mutant-construct/Distance-Plot
 
### load pdb files and rename
 
load 1HP1.pdb, O5NT-1HP1
 
load 1HPU.pdb, C5NT-1HPU
 
 
 
hide everything
 
### Select asymmetric units from pdb file
 
create O5NT, /O5NT-1HP1//A
 
create C5NT, /C5NT-1HPU//C
 
delete O5NT-1HP1
 
delete C5NT-1HPU
 
 
 
cartoon auto
 
show cartoon, O5NT
 
show cartoon, C5NT
 
set cartoon_fancy_helices=1
 
set bg,[1,1,1]
 
 
 
set auto_zoom, off
 
 
 
### Make sharper
 
set fog=0
 
 
 
### Load my function, and run function with input
 
run ColorByDisplacement.py
 
ColorByDisplacementCA O5NT, C5NT, super1=resi 26-355, super2=resi 26-355, doColor=t, doAlign=t
 
#ColorByDisplacementAll O5NT, C5NT, super1=resi 26-355, super2=resi 26-355, doColor=t, doAlign=t
 
 
 
set_view (\
 
    0.094686687,  -0.390707940,    0.915631354,\
 
    0.809000611,  -0.505792081,  -0.299485058,\
 
    0.580131471,    0.769104064,    0.268191338,\
 
    0.000000000,    0.000000000, -280.940521240,\
 
    26.240486145,  46.146961212,  21.702068329,\
 
  231.830673218,  330.050415039,  -20.000000000 )
 
</source>
 
 
 
 
 
== Python Code ==
 
<source lang="python">
 
import pymol
 
import cmd
 
from pymol import stored
 
 
 
### Thanks for inspiration from:
 
"""
 
--- ColorByRMSD: RMSD based coloring ---
 
Authors : Shivender Shandilya; Jason Vertrees
 
Program : ColorByRMSD
 
Date    : July 2009
 
http://www.pymolwiki.org/index.php/ColorByRMSD
 
"""
 
### Author Troels Linnet - troels.linnet att bbz.uni-leipzig.de
 
"""
 
--- ColorByDisplacementCA: Displacement based coloring ---
 
Authors : Troels E. Linnet
 
Program : ColorByDisplacementCA
 
Date    : January 2011
 
email: troels.linnet att bbz.uni-leipzig.de
 
"""
 
 
 
"""
 
    ColorByDisplacementCA --
 
Show the distance displacement deviation in color to more easily see variable regions.
 
 
 
    PARAMS
 
 
 
        objSel1 (valid PyMOL object or selection)
 
            The first object
 
 
 
        objSel2 (valid PyMOL object or selection)
 
            The second object
 
 
 
        doColor (boolean, either True or False)
 
            If doColor=True then a simple representation is created to
 
            highlight the differences.  If False, then no changes are made.
 
            DEFAULT: False
 
 
 
    RETURNS
 
        None.
 
 
 
    SIDE-EFFECTS
 
        Modifies the B-factor columns in your original structures.
 
 
 
"""
 
 
 
def strTrue(p):
 
    return p[0].upper() == "T"
 
 
 
# The main function that assigns current displacement distance as the new B-factor
 
def displacementUpdateB(objA, alnAri, objB, alnBri):
 
    ### If residue is unassigned in one of the pdb files, we reset its value
 
    for x in range(len(alnAri)):
 
        s1 = objA + " and name CA and resi " + alnAri[x]
 
cmd.alter( s1, "b = " + str(-0.01))
 
    for x in range(len(alnBri)):
 
s2 = objB + " and name CA and resi " + alnBri[x]
 
        cmd.alter( s2, "b = " + str(-0.01))
 
    cmd.sort(objA); cmd.sort(objB)
 
    for x in range(len(alnAri)):
 
        s1 = objA + " and name CA and resi " + alnAri[x]
 
s2 = objB + " and name CA and resi " + alnAri[x]
 
### Names starting with __ (underscores) are normally hidden by PyMOL
 
tempObject = "__tempObject"
 
Displacement = cmd.distance(tempObject, s1, s2)
 
cmd.alter( s1, "b = " + str(Displacement))
 
        cmd.alter( s2, "b = " + str(Displacement))
 
cmd.delete(tempObject)
 
    cmd.sort(objA); cmd.sort(objB)
 
 
 
def ColorByDisplacementCA(objSel1, objSel2, super1='all', super2='all', doColor="True", doAlign="True", AlignedWhite='yes'):
 
    ### First create backup copies; names starting with __ (underscores) are normally hidden by PyMOL
 
    tObj1, tObj2, aln = "__tempObj1", "__tempObj2", "__aln"
 
 
 
    if strTrue(doAlign):
 
        ### Create temp objects
 
        cmd.create( tObj1, objSel1 )
 
        cmd.create( tObj2, objSel2 )
 
### Align and make create an object aln which indicates which atoms were paired between the two structures
 
### Super is must faster than align http://www.pymolwiki.org/index.php/Super
 
        cmd.super(tObj1 + ' and ' + str(super1), tObj2 + ' and ' + str(super2), object=aln)
 
### Modify the original matrix of object1 from the alignment
 
        cmd.matrix_copy(tObj1, objSel1)
 
    else:
 
        ### Create temp objects
 
        cmd.create( tObj1, objSel1 )
 
        cmd.create( tObj2, objSel2 )
 
### Align and make create an object aln which indicates which atoms were paired between the two structures
 
### Super is must faster than align http://www.pymolwiki.org/index.php/Super
 
        cmd.super(tObj1 + ' and ' + str(super1), tObj2 + ' and ' + str(super2), object=aln)
 
 
 
    ### Modify the B-factor columns of the original objects,
 
    ### in order to identify the residues NOT used for alignment, later on
 
    cmd.alter( objSel1 + " or " + objSel2, "b=-0.2")
 
    cmd.alter( tObj1 + " or " + tObj2, "chain='A'")
 
    cmd.alter( tObj1 + " or " + tObj2, "segi='A'")
 
 
 
    ### Update pymol internal representations; one of these should do the trick
 
    cmd.refresh(); cmd.rebuild(); cmd.sort(tObj1); cmd.sort(tObj2)
 
 
 
    ###  Create lists for storage
 
    stored.alnAres, stored.alnBres = [], []
 
 
 
    ### Iterate over objects
 
    if AlignedWhite=='yes':
 
        cmd.iterate(tObj1 + " and n. CA and not " + aln, "stored.alnAres.append(resi)")
 
cmd.iterate(tObj2 + " and n. CA and not " + aln, "stored.alnBres.append(resi)")
 
    else:
 
cmd.iterate(tObj1 + " and n. CA", "stored.alnAres.append(resi)")
 
        cmd.iterate(tObj2 + " and n. CA", "stored.alnBres.append(resi)")
 
 
 
    ### Change the B-factors for EACH object
 
    displacementUpdateB(tObj1,stored.alnAres,tObj2,stored.alnBres)
 
 
 
    ### Store the NEW B-factors
 
    stored.alnAnb, stored.alnBnb = [], []
 
    ### Iterate over objects and get b
 
    if AlignedWhite=='yes':
 
### Iterate over objects which is not aligned
 
    cmd.iterate(tObj1 + " and n. CA and not " + aln, "stored.alnAnb.append(b)" )
 
cmd.iterate(tObj2 + " and n. CA and not " + aln, "stored.alnBnb.append(b)" )
 
    else:
 
### Or Iterate over all objects with CA
 
    cmd.iterate(tObj1 + " and n. CA", "stored.alnAnb.append(b)" )
 
    cmd.iterate(tObj2 + " and n. CA", "stored.alnBnb.append(b)" )
 
 
 
    ### Get rid of all intermediate objects and clean up
 
    cmd.delete(tObj1)
 
    cmd.delete(tObj2)
 
    cmd.delete(aln)
 
 
 
    ### Assign the just stored NEW B-factors to the original objects
 
    for x in range(len(stored.alnAres)):
 
        cmd.alter(objSel1 + " and n. CA and i. " + str(stored.alnAres[x]), "b = " + str(stored.alnAnb[x]))
 
    for x in range(len(stored.alnBres)):
 
        cmd.alter(objSel2 + " and n. CA and i. " + str(stored.alnBres[x]), "b = " + str(stored.alnBnb[x]))
 
    cmd.rebuild(); cmd.refresh(); cmd.sort(objSel1); cmd.sort(objSel2)
 
 
 
    ### Provide some useful information
 
    stored.allRMSDval = []
 
    stored.allRMSDval = stored.alnAnb + stored.alnBnb
 
    print "\nColorByDisplacementCA completed successfully."
 
    print "The MAXIMUM Displacement is: "+str(max(stored.allRMSDval)) +" residue "+str(stored.alnAres[int(stored.allRMSDval.index(max(stored.allRMSDval)))])
 
 
 
    if strTrue(doColor):
 
        ### Showcase what we did
 
        #cmd.orient()
 
        #cmd.hide("all")
 
        cmd.show("cartoon", objSel1 + " or " + objSel2)
 
        ### Select the residues not used for alignment; they still have their B-factors as "-0.2"
 
        cmd.select("notUsedForAln", "b = -0.2")
 
        ### White-wash the residues not used for alignment
 
        cmd.color("white", "notUsedForAln")
 
        ### Select the residues not in both pdb files; they have their B-factors as "-0. 01"
 
        cmd.select("ResNotInBothPDB", "b = -0.01")
 
        ### White-wash the residues not used for alignment
 
        cmd.color("black", "ResNotInBothPDB")
 
        ### Color the residues used for alignment according to their B-factors (Displacment values)
 
#        cmd.spectrum("b", 'rainbow',  "((" + objSel1 + " and n. CA) or (n. CA and " + objSel2 +" )) and not notUsedForAln+ResNotInBothPDB")
 
        cmd.spectrum("b", 'rainbow',  "((" + objSel1 + " and n. CA) or (n. CA and " + objSel2 +" )) and not (notUsedForAln or ResNotInBothPDB)")
 
        ### Delete the selection of atoms not used for alignment
 
        ### If you would like to keep this selection intact,
 
        ### just comment "cmd.delete" line and
 
        ### uncomment the "cmd.disable" line abowe.
 
        cmd.disable("notUsedForAln")
 
        cmd.delete("notUsedForAln")
 
        cmd.disable("ResNotInBothPDB")
 
        cmd.delete("ResNotInBothPDB")
 
 
 
        print "\nObjects are now colored by C-alpha displacement deviation."
 
        print "Blue is minimum and red is maximum..."
 
        print "White is those residues used in the alignment algorithm. Can be turned off in top of algorithm."
 
print "Black is residues that does not exist in both files..."
 
cmd.extend("ColorByDisplacementCA", ColorByDisplacementCA)
 
 
 
def displacementUpdateBAll(objA, alnAri, objB, alnBri):
 
    print "This will take a while to go through the for loops. Give me around 3-5 minutes..."
 
    ### If residue is unassigned in one of the pdb files, we reset its value
 
    for x in range(len(alnAri)):
 
        s1 = objA + " and resi " + alnAri[x][0] + " and name " + str(alnAri[x][1])
 
cmd.alter( s1, "b = " + str(-0.01))
 
    for x in range(len(alnBri)):
 
s2 = objB + " and resi " + alnBri[x][0] + " and name " + alnBri[x][1]
 
        cmd.alter( s2, "b = " + str(-0.01))
 
    cmd.sort(objA); cmd.sort(objB)
 
    for x in range(len(alnAri)):
 
        s1 = objA + " and resi " + alnAri[x][0] + " and name " + alnAri[x][1]
 
s2 = objB + " and resi " + alnAri[x][0] + " and name " + alnAri[x][1]
 
### Names starting with __ (underscores) are normally hidden by PyMOL
 
tempObject = "__tempObject"
 
Displacement = cmd.distance(tempObject, s1, s2)
 
cmd.alter( s1, "b = " + str(Displacement))
 
        cmd.alter( s2, "b = " + str(Displacement))
 
cmd.delete(tempObject)
 
    cmd.sort(objA); cmd.sort(objB)
 
 
 
def ColorByDisplacementAll(objSel1, objSel2, super1='all', super2='all', doColor="True", doAlign="True", AlignedWhite='yes'):
 
    ### First create backup copies; names starting with __ (underscores) are normally hidden by PyMOL
 
    tObj1, tObj2, aln = "__tempObj1", "__tempObj2", "__aln"
 
 
 
    if strTrue(doAlign):
 
        ### Create temp objects
 
        cmd.create( tObj1, objSel1 )
 
        cmd.create( tObj2, objSel2 )
 
### Align and make create an object aln which indicates which atoms were paired between the two structures
 
### Super is must faster than align http://www.pymolwiki.org/index.php/Super
 
        cmd.super(tObj1 + ' and ' + str(super1), tObj2 + ' and ' + str(super2), object=aln)
 
### Modify the original matrix of object1 from the alignment
 
        cmd.matrix_copy(tObj1, objSel1)
 
    else:
 
        ### Create temp objects
 
        cmd.create( tObj1, objSel1 )
 
        cmd.create( tObj2, objSel2 )
 
### Align and make create an object aln which indicates which atoms were paired between the two structures
 
### Super is must faster than align http://www.pymolwiki.org/index.php/Super
 
        cmd.super(tObj1 + ' and ' + str(super1), tObj2 + ' and ' + str(super2), object=aln)
 
 
 
    ### Modify the B-factor columns of the original objects,
 
    ### in order to identify the residues NOT used for alignment, later on
 
    cmd.alter( objSel1 + " or " + objSel2, "b=-0.2")
 
    cmd.alter( tObj1 + " or " + tObj2, "chain='A'")
 
    cmd.alter( tObj1 + " or " + tObj2, "segi='A'")
 
 
 
    ### Update pymol internal representations; one of these should do the trick
 
    cmd.refresh(); cmd.rebuild(); cmd.sort(tObj1); cmd.sort(tObj2)
 
 
 
    ###  Create lists for storage
 
    stored.alnAres, stored.alnBres = [], []
 
 
 
    ### Iterate over objects and get resi
 
    if AlignedWhite=='yes':
 
        cmd.iterate(tObj1 + " and not " + aln, "stored.alnAres.append((resi, name))")
 
        cmd.iterate(tObj2 + " and not " + aln, "stored.alnBres.append((resi, name))")
 
    else:
 
        cmd.iterate(tObj1, "stored.alnAres.append((resi, name))")
 
        cmd.iterate(tObj2, "stored.alnBres.append((resi, name))")
 
 
 
    ### Change the B-factors for EACH object
 
    displacementUpdateBAll(tObj1,stored.alnAres,tObj2,stored.alnBres)
 
 
 
    ### Store the NEW B-factors
 
    stored.alnAnb, stored.alnBnb = [], []
 
    ### Iterate over objects and get b
 
 
 
    if AlignedWhite=='yes':
 
        ### Iterate over objects which is not aligned
 
        cmd.iterate(tObj1 + " and not " + aln, "stored.alnAnb.append(b)" )
 
        cmd.iterate(tObj2 + " and not " + aln, "stored.alnBnb.append(b)" )
 
    else:
 
### Or Iterate over all objects with CA
 
        cmd.iterate(tObj1, "stored.alnAnb.append(b)" )
 
        cmd.iterate(tObj2, "stored.alnBnb.append(b)" )
 
 
 
    ### Get rid of all intermediate objects and clean up
 
    cmd.delete(tObj1)
 
    cmd.delete(tObj2)
 
    cmd.delete(aln)
 
 
 
    ### Assign the just stored NEW B-factors to the original objects
 
    print "Sooon ready. 1 more minute"
 
    for x in range(len(stored.alnAres)):
 
        cmd.alter(objSel1 + " and resi " + str(stored.alnAres[x][0]) + " and name " + str(stored.alnAres[x][1]), "b = " + str(stored.alnAnb[x]))
 
    for x in range(len(stored.alnBres)):
 
        cmd.alter(objSel2 + " and resi " + str(stored.alnBres[x][0]) + " and name " + str(stored.alnBres[x][1]), "b = " + str(stored.alnBnb[x]))
 
    cmd.rebuild(); cmd.refresh(); cmd.sort(objSel1); cmd.sort(objSel2)
 
 
 
    ### Provide some useful information
 
    stored.allRMSDval = []
 
    stored.allRMSDval = stored.alnAnb + stored.alnBnb
 
    print "\nColorByDisplacementAll completed successfully."
 
    print "The MAXIMUM Displacement is: "+str(max(stored.allRMSDval)) +" residue "+str(stored.alnAres[int(stored.allRMSDval.index(max(stored.allRMSDval)))])
 
 
 
    if strTrue(doColor):
 
        ### Showcase what we did
 
        #cmd.orient()
 
        #cmd.hide("all")
 
        cmd.show("sticks", objSel1 + " or " + objSel2)
 
        ### Select the residues not used for alignment; they still have their B-factors as "-0.2"
 
        cmd.select("notUsedForAln", "b = -0.2")
 
        ### White-wash the residues not used for alignment
 
        cmd.color("white", "notUsedForAln")
 
        ### Select the residues not in both pdb files; they have their B-factors as "-0.01"
 
        cmd.select("ResNotInBothPDB", "b = -0.01")
 
        ### White-wash the residues not used for alignment
 
        cmd.color("black", "ResNotInBothPDB")
 
        ### Color the residues used for alignment according to their B-factors (Displacement values)
 
#        cmd.spectrum("b", 'rainbow',  "((" + objSel1 + ") or (" + objSel2 +" )) and not notUsedForAln+ResNotInBothPDB")
 
        cmd.spectrum("b", 'rainbow',  "((" + objSel1 + ") or (" + objSel2 +" )) and not (notUsedForAln or ResNotInBothPDB)")
 
        ### Delete the selection of atoms not used for alignment
 
        ### If you would like to keep this selection intact,
 
        ### just comment "cmd.delete" line and
 
        ### uncomment the "cmd.disable" line abowe.
 
        cmd.disable("notUsedForAln")
 
        cmd.delete("notUsedForAln")
 
        cmd.disable("ResNotInBothPDB")
 
        cmd.delete("ResNotInBothPDB")
 
        print "\nObjects are now colored by C-alpha displacement deviation."
 
        print "Blue is minimum and red is maximum..."
 
        print "White is those residues used in the alignment algorithm. Can be turned off in top of algorithm."
 
print "Black is residues that does not exist in both files..."
 
cmd.extend("ColorByDisplacementAll", ColorByDisplacementAll)
 
</source>
 
  
 
[[Category:Script_Library]]
 
[[Category:Script_Library]]
 
[[Category:Structural_Biology_Scripts]]
 
[[Category:Structural_Biology_Scripts]]
 +
[[Category:Pymol-script-repo]]

Latest revision as of 02:15, 28 March 2014

Type Python Script
Download colorbydisplacement.py
Author(s) Troels E. Linnet
License BSD
This code has been put under version control in the project Pymol-script-repo

Introduction

This script allows you to color two structures by distance displacement between an Open and Closed form of a protein, as calculated by PyMol's internal distance command. The pairwise distance is calculated between all-atoms. The distance displacement values are stored as B-factors of these residues, which are colored by a rainbow color spectrum, with blue specifying minimum and red indicating maximum.

Do keep in mind, all original B-factors values are overwritten!

There exist one version.
ColorByDisplacementAll is between All atoms in residues and is quite slow => 3-5 mins for a run. Ideal for sticks representation.

You have to specify which residues should be used in the alignment procedure, or it will take all residues as standard

V.2 is implemented the 2011.01.06 - Due to a bug in coloring.

Bug in code

A bug in the boolean operator of the spectrum command has been found. This versions work for version 1.3 Educational product.
For other versions of pymol, try to change (comment/uncomment) the cmd.spectrum line. The other spectrum line works for Open-Source PyMOL 1.2r3pre, Incentive product

Examples

ColorByDisplacementAll O5NT, C5NT, super1=resi 26-355, super2=resi 26-355, doColor=t, doAlign=t

ColorByDisplacementAll O5NT, C5NT, super1=resi 26-355, super2=resi 26-355, doColor=t, doAlign=t, AlignedWhite='no'

Dark blue is low displacement, higher displacements are in orange/yellow/red.
Residues used for alignment is colored white. Can be turned off in top of algorithm. Residues not in both pdb files is colored black

Example 1

Download: examples/colorbydisplacement_1.pml
This code has been put under version control in the project Pymol-script-repo

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