https://cyana.org/w/index.php?action=history&feed=atom&title=CYANA_Commands%3A_angles_setCYANA Commands: angles set - Revision history2026-04-09T05:06:49ZRevision history for this page on the wikiMediaWiki 1.45.1https://cyana.org/w/index.php?title=CYANA_Commands:_angles_set&diff=4464&oldid=prevAdmin: 1 revision2009-01-28T23:35:40Z<p>1 revision</p>
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== Parameters ==<br />
<br />
; selection=''string'': (default: ''none'')<br />
; value=''string'': (default: ''none'')<br />
; free <br />
; fixed <br />
; rigid <br />
<br />
== Description ==<br />
<br />
Command to set properties of the torsion angles that match the<br />
selection ''string''. By default, the selection made in the most recent<br />
'''angles select''' command is used, or all angles if no selection has<br />
been made so far.<br />
<br />
The value of a torsion angle can be set with the parameter '''value'''. The<br />
''string'' is a real number or a real expression that may contain the<br />
symbol '''value''' to represent the current value of the torsion angle.<br />
Torsion angle values are given in degrees.<br />
<br />
Torsion angles are fixed to their current value if the option '''fixed'''<br />
is given. Fixed torsion angles are non-rotatable and cannot be changed<br />
during minimization or torsion angle dynamics.<br />
<br />
Torsion angles are made rotatable if the option '''free''' is given. Free<br />
torsion angles can be changed during minimization or torsion angle<br />
dynamics.<br />
<br />
Initially, all torsion angles defined in the library are rotatable<br />
except for those called OMEGA, which are typically used for the<br />
peptide bonds in polypeptides. OMEGA angles are fixed to 180 degrees<br />
(trans). Optionally, the OMEGA angle preceding a given amino acid<br />
residue can be fixed to 0 degrees (cis) by a preceding the residue<br />
name in the sequence (.seq) file by a lowercase '''c'''.</div>Admin