Hi Andrew,
I can only make a guess: As the atom that actually should be "O1" is called
"O4A", and all the other atom names look fine apart from a "B" added to the
them, it looks as if this residue was derived from a disaccharide, where the
XYP part was linked to O4 of another residue. But I agr
Does anyone out there have some insight into, or a credible explanation
for, why PDB ligand id XYP (beta-D-xylopyranose) has what seems like
non-standard atom notation, at least compared to other sugars!
The standard atom naming convention for nearly all monosaccharides,
including XYS (alpha-
