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Family ID
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Display amino acid frequencies

 

Enter a set of sequences and display the distribution of amino acids at specified positions
Choose the appropriate set of aligned sequence
Select a sequence as reference for numbering even if this sequence does not belong to the selected set.
By default the bovin chymotrypsin is used as reference .
Write (or copy and paste) the Swiss-Prot code or accession number of the selected proteins.

OR select sequences from all serine proteases by constraints: positions and constraints separated by spaces (ex: 57 H 102 D 195 S )


Enter the position separated by space (ex: 225 226 227 228 189 214)


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Filter set specific positions

Enter sets of sequences and perform logical operations on sets of sequences to look for set-specific residues.
Choose the appropriate set of aligned sequence
Select a sequence as reference .
Select the sequences with the corresponding operator:
filter residues identical in this subset

AND similar in this subset

AND not similar in this subset

AND different in this subset


Select a substitution matrix for the similarity scores
Select a convenient lowerthreshold for similarities (selected substitutions have to be greater)
Select a convenient upper threshold for disimilarities (selected substitutions have to be lesser)
Select the display mode:

Reduced output
Global alignment vertical
Horizontal alignment in a window from to
Display of the result on a 3D-structure via Rasmol/Chime (if they are installed) backbone van der Waals SA surface

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Go to the Washington University in St Louis
Go to the School of MedicineGo to the Department of Biochemistry and Molecular Biophysics


Thierry Rose, PhD and Enrico Di Cera, MD
Department of Biochemistry and Molecular Biophysics
Washington University School of Medicine
Saint Louis, MO, U.S.A.

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