Bob wrote:

>>Q: Is there a literature reference I should read on this? If so, send it.
>>
> What would you like to understand that you don't now?

Don't know

>>Q: Under what circumstances do you get bonding with residue -3 or -4? Can
>>you give me an example pdb file so that I can see this?
>>
>>
> The implication here is simply that you have a
>
>  O (n) -- N(n-4)   (offset -4; green)
>
> An example is 1qnf.pdb, DNA lyase, where  O(asn 144) is hydrogen bonded
> to NH(ser 140)
> You won't find many of these, but "the circumstances" are just "because
> that's what it does"

OK ... so it is not related to any special type of structure.

>>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).

It also seems to me that sidechain hbonds should be different from
mainchain hbonds.

>>Q: I always feel the need to play with colors ... Are these rgb values
>> good?
>
> I think so.

OK


Miguel



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