Dear PyMol users,

1.
I'm puzzled with a coloring problem while coloring a protein molecule
accordingly to its secondary structure by using 'discrete color' option:
If there are a helix and/or strand adjacent together (e.g. helix from 1-10
and sheet from 11-20) the small pseudo-loop region between (arising from
atoms between last Calpha of the helix and first Calpha of the strand) gets
colored like the latter partner (maybe because of its color was defined at
last). What I'd like to do is to color this small pseudo loop in a different
color. I've tried to color the atoms between last Calpha and next Calpha
(C,N) individually but there was no effect. It seems to me, that cartoon
coloring only corresponds to Calpha positions. So, is there a way around to
color cartoon regions between secondary structure elements as described
before?

2.
Is there a way to force PyMol to draw a cartoon which shows two different
secondary strcuture elements (helix, strand) ending and beginning at the
same residue? Maybe one can image a scenario where the N atom makes a
strand-like conformation while the CO group of the same residue starts with
a helix. In another program it is/was possible to assign helix and strand
ending and beginning in the same residue but when I try to perfom with PyMol
only the last partner is shown correctly while the first partner gets
overrided in its last residue, e.g. cartoon "strand 1-10" and "helix 10-20"
looks the same like "strand 1-9" and "helix 10-20". How one could circumvent
this dilemma?

Many thanks in advance!

Greetings,
Bartholomeus


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