[BioPython] one more question about dssp

[Thomas Hamelryck]

> One last question and I will try not to bother for a week...

That's what they all say :-) :-)
It's no problem - ask away, that's what the list is for...

> Using DSSP in Bio.PDB, I obtain an assertion error.
>
> I looked at the code in DSSP.py
> # Something went wrong if this is not true! <----
> assert(resname==aa)

That's a bug! DSSP renames some Cys residues to a, b, etc. 
in case of SS bridges. I forgot to take that into account in the code 
that asserts that the DSSP residue is the same residue as in the Model.

BUT: it's fixed in the CVS version.
A quick fix would be to remove the assert in case of CYS residues.

Cheers,

-Thomas