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Count number of Serine/threonine/tyrosine residues in certain genes ?!

I have a list of Arabidopsis Gene ID, I am interested to generate serine-threonine- tyrosine counts of residues in each one? Is there a way to do that for a large set of genes?

It is my first time to look for such aspect! I know the question may sound naive a bit!

Thanks in advance

protein serine threonine tyrosine

2 answers

There are probably BioPerl or BioPython functions that will do this.

I would use this approach. You can either download the genes of interest in FASTA format (or similar) or use a tool to automatically retrieve a sequence from NCBI (or another database) using the ID and calculate that. But BioPerl/Biopython both have sequence parsing methods that you can build on to do the counting.

You could use ExPASy's ProtParam tool http://web.expasy.org/protparam which allows you to compute the amino acid composition for a given protein interactively.

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