On Wednesday 23 August 2006 19:25, Rajarshi Guha wrote:
> Hi, I'm using ProteinBuilderTool to create a peptide sequence like
>
> BioPolymer pepseq = ProteinBuilderTool.createProtein("ACDEFGH");
>
> However, when I do
>
> Collection aas = peptide.getMonomerNames();
>
> and then print out the monomer names I get an extra blank entry. Is this
> supposed to be the case?

Yes, I think so. This blank entry is a container for all atoms that do not 
belong to a residue (e.g. ligands, water, metals...)

> Also, in such a sequence is there any way to determine the C-terminal
> and N-terminal residues? Or is it always the case that the left most
> residue (i.e., element 0 in the monomer list) the N-terminal and the
> last one the C-terminal?

The AminoAcid class should have get methods for that. Please verify that they 
work for you.

Egon

-- 
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Cologne University Bioinformatics Center (CUBIC)
Blog: http://chem-bla-ics.blogspot.com/
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