Unknown aminoacids (X) in fasta file

[Volkix]

I have a fasta file in which the sequences having  unknown aminoacid residues as X. When I try to add this fasta as database it gives the error  "found character in protein sequence that can not be mapped to an amino acid (X)". Does anybody knows a way to add this fasta as database for searchgui? I have used this fasta file with some other search engines.

Best

Volkan

[Harald Barsnes]

Hi Volkan,

Having X's in your sequence should not be an issue. Which version of SearchGUI are you using? And when do you get this error?

Best regards,

Harald