ExPASy is the SIB Bioinformatics Resource Portal which provides access to scientific databases and software tools (i.e., resources) in different areas of life sciences including proteomics, genomics, phylogeny, systems biology, population genetics, transcriptomics etc. (see Categories in the left menu). On this portal you find resources from many different SIB groups as well as external institutions.

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AACompSim
Compare amino acid composition of a UniProtKB entry with UniProtKB entries
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Compute pI/MW
Compute isoelectric point and molecular weight from protein sequence
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FindPept
Identify peptides resulting from unspecific protein cleavage from their experimental masses
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FindMod
Predict potential protein post-translational modifications and find potential single amino acid substitutions in peptides.
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GlycanMass
Calculate the mass of an oligosaccharide structure.
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Latest News

Survey - ExPASy's 25th Anniversary - 2018-09-28

This year ExPASy is celebrating its 25th birthday! Please participate in our survey. We will use your input to shape a new version.

Protein Spotlight: Best left unsaid - 2018-09-28

There are times in life when things are best left unsaid. So you bite your tongue or someone bites it for you. Either way, you are silenced and no - or less - harm is done. Nature also has its techniques for muffling genes .... More.

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