Hi Roja,
Which PyMOL version do you use? The "attach_amino_acid" function had a bug in
old versions, it was fixed in PyMOL 1.8.0.
A capped poly-threonine alpha helix can be built in PyMOL (1.8+) like this:
from pymol import cmd, editor
cmd.set('retain_order', 0)
cmd.fab('T' * 40, ss=1)
editor.a
Hi Roja,
This could be useful for you:
18 Nov 2017, NME and ACE capping from script
https://www.mail-archive.com/pymol-users@lists.sourceforge.net/msg14812.html
I couldn't quite follow your description, which interface were you using? The
"Builder" panel? The following works for me:
1) Click "Bu