Dihedral/Dihedral angles in proteins

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(trying the script in a Jmol Extension tag)
(trying the script in a Jmol Extension tag)
Line 21: Line 21:
<uploadedFileContents>1iy4_34-36.pdb</uploadedFileContents>
<uploadedFileContents>1iy4_34-36.pdb</uploadedFileContents>
<pspeed>2</pspeed>
<pspeed>2</pspeed>
-
<script>
 
-
for (i=0;i<23;i++) {
 
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if (i==0) {
 
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load "";
 
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select visible and (34, 35.N, 35.H);
 
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hide all;
 
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rotateSelected {35.CA} {35.N} -12.7428;
 
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calculate structure; // phi=-90
 
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} else {
 
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load append "";
 
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select visible and (34, 35.N, 35.H);
 
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hide all;
 
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rotateSelected {35.CA} {35.N} @{-12.7428 + 15*i}; //phi rotation
 
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calculate structure;
 
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}
 
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draw id @{"phi1_" + i} plane {35.N} {35.CA} {34.C};
 
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draw id @{"phi2_" + i} plane {35.N} {35.CA} {35.C};
 
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color $phi1* thistle;
 
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color $phi2* plum;
 
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}
 
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draw psi2 plane fixed {35.CA} {35.C} {36.N};
 
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color $psi2 sandybrown;
 
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background white;
 
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color _H [xEEFFFF];
 
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wireframe 0.12;
 
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font label 14 Sans bold;
 
- 
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select *.CA; color [x70AB70]; label "C\u03B1"; color label green;
 
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select *.C; color [xBF9090]; label "C=O"; color label indianred;
 
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select *.N; label N;
 
- 
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select all;
 
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color bonds [x999999];
 
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select *.C,*.N;
 
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define pepBonds selected;
 
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color bonds [x404040];
 
- 
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select (34,36) and sidechain;
 
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color translucent 0.3;
 
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color bonds translucent 0.3;
 
- 
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set echo vPhi 0% 100%;
 
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set echo vPhi left;
 
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font echo 22 serif italic;
 
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set echo vPsi 0% 100%;
 
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set echo vPsi left;
 
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color $vP* black;
 
- 
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select all;
 
- 
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set AnimFrameCallback "jmolscript:showPhi()"
 
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function showPhi() {
 
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var k = '\u03D5 = ' + {35 and visible}.phi % 0 + '\u00B0'; // phi, degree
 
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set echo vPhi;
 
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echo @k;
 
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}
 
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set echo vPsi;
 
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echo @{'|\u03C8 = ' + {35/1.1}.psi % 0 + '\u00B0'}; //constant
 
- 
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frame rewind;
 
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moveto 0 {426 -575 698 151.19} 85 0 0 {109.5 -2.1 -4.584} 7.74 {0 0 0} 0 0 0 3 0 0;
 
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anim mode loop 0 0;
 
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anim fps 2;
 
- 
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set measurementLabels off;
 
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set measurements 0.25;
 
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color measurements magenta;
 
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measure delete;
 
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measure range 0 1.6 all (34, 35.N, 35.H) ((35,36) and not (35.N, 35.H, 35.CA));
 
- 
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display all;
 
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</script>
 
</jmolApplet>
</jmolApplet>
</jmol>
</jmol>

Revision as of 19:35, 3 December 2014

Theoretical Model: The protein structure described on this page was determined theoretically, and hence should be interpreted with caution.

Dihedral angles in proteins: Phi and Psi

a tripeptide

Drag the structure with the mouse to rotate


Let's try with a tag:

Drag the structure with the mouse to rotate


References

Proteopedia Page Contributors and Editors (what is this?)

Angel Herraez

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