Steven Sheriff wrote:
> Paul:
>
> Piling on here, I see that people have been asking you about features
> for either N-linked (or doubtless O-linked) carbohydrate and branched
> chain carbohydrates. Add my name to the list.
Scheduled for 0.7
> However, I have a more fundamental difficulty, COOT does not seem to be
> recognizing NAG (N-acetylglucosamine), MAN (mannose), or FUC (fucose) as
> known residues, e.g. "WARNING:: Failed to find restraints for :NAG:".
>
> I would note that investigating our CCP4 directory tree, I find:
>
> lib/data/monomers/f/FUC-A-L.cif but not FUC.cif
> lib/data/monomers/m/MAN-B-D.cif but not MAN.cif
> lib/data/monomers/n/NAG-B-D.cif but not NAG.cif
>
> So maybe the question is how do I make the connection between a residue
> name of NAG and the residue names stored in the the cif files, NAG-b-D?
You don't. Coot does - it checks for the anomer if it can't find a
monomer without it. It seems to be making a error though.
GLC fails for me, but NAG and FUC and MAN work (that is "Get Monomer..."
given a 3 letter code works). Hmm... If I can fix this for 0.4 I will
do so.
Paul.
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