Miguel sent (2004.05.19 at 9.24a [+0200gmt]) :

>Bob wrote:
>
>>>Q: These are for proteins. Shouldn't there be another color (or
>>>set of colors) for nucleotide chains? What color should nucleotide
>>>hbonds be?
>>>
>>Chime delivers these as yellow, which is appropriate, because they
>>are BETWEEN chains, thus have no significant "offset."
>
>It doesn't seem right to me that hbonds between chains are the same
>color as hbonds within a chain (like beta-sheets).
>
why not?


>It also seems to me that sidechain hbonds should be different from
>mainchain hbonds.
>
it's kind of like saying covalent bonds are different - they are, but we
generally treat them as a group anyway.

it would be very useful to have a way to access different sub-categories
of hydrogen bonds, though:

   select hbonds interchain
   select hbonds sidechain
   select hbonds mainchain


but I think the default should be to color all hbonds white, inheriting
the CPK color for hydrogen.  and there should be no code-level
distinction between protein and nucleic hydrogen bonds - one can easily
build selections to tweak those apart.  IMO of course :-)  KIS (keep it
simple).


regards,

tim

-- 
Timothy Driscoll
molvisions - see, grasp, learn.
<http://www.molvisions.com/>
usa:north carolina:wake forest


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