PSI-BLAST your sequence to find Persistently Conserved Positions

Please wait until you have received the results of one job before you submit another. Thank you.

Sequence name:

Paste your sequence here.

or send a fasta-format file:

email PeCoP results:

my email address:

PSI-BLAST Parameters

Number of PSI-BLAST Iterations:

Filter low-complexity sequences? what's this?
Score matrix for PSI-BLAST: what's this?
   * Matrix    Gap existence cost    Per residue gap cost     Lambda ratio

PSI-BLAST E-value: what's this?
Inclusion Threshold: what's this?
Display PSI-BLAST alignment as:

PeCoP Parameters

Zscore threshold:  

About alphabets

Calculate conservation based on a alphabet     what's this?
Display output using a: alphabet     what's this?
priors in calculation of information content       what's this?
Final position status determined according to:       what's this?
If plurality, then what is the minimal number of iterations?

When using PeCoP please cite:
Iddo Friedberg and Hanah Margalit PeCoP: automatic determination of persistently conserved positions in protein families Bioinformatics 2002 18: 1276-1277

Questions, comments, suggestions: Iddo Friedberg

PeCoP, Blastology, and a few other things at:
O'Reilly Bioinformatics Conference.
Bioinformatics.Org track.