id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking	notify_on_close	platform	project
589	cartoon short-strand orientations unstable over trajectory	Elaine Meng	Conrad Huang	"Obvserved during morphing but I don't think the source of the trajectory matters much, since the backbone atom orientations are quite steady but the cartoon representation is flapping around for strands, and only the short ones (3 residues?).  I.e. the actual peptide bonds appear to be changing very little in orientation, so I suspect some problem with calculating transverse ribbon orientation for those short guys.

I attach a script to create the morph trajectory and show backbone atoms with transparent ribbons. The morph can be played back with:

coordset #3 0,20 pause 10
-or (to recompute secondary structure at each frame)-
coordset #3 0,20 pause 10 compute t

The latter makes a few strands longer so they don't flap, but the shorter ones still flap."	defect	closed	major	0.5	Depiction		fixed		Tom Goddard				all	ChimeraX