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Welcome to the new UniProt website! We hope you enjoy the new design. If you’re not quite ready yet, you can still go back to the old site.

The mission of UniProt is to provide the scientific community with a comprehensive, high-quality and freely accessible resource of protein sequence and functional information.


  • K like Koagulation | Change of the cross-reference ArrayExpress to ExpressionAtlas
    UniProt release 2014_10

  • Small is beautiful (and useful) | Evidences in the UniProtKB flat file format
    UniProt release 2014_09

  • Ubiquitin caught at its own game | New human variant types available on the FTP site
    UniProt release 2014_08

  • Lark or owl? PER3 is the answer | Cross-references to CCDS and GeneReviews | UniParc cross-references with protein and gene names | FTP ...
    UniProt release 2014_07

News archive

Getting started

  • Text search
    Our basic text search allows you to search all the resources available

    Find regions of similarity between your sequences

  • Sequence alignments
    Align two or more protein sequences using the Clustal Omega program

  • Upload lists
    This tool merges the "Retrieve" and "ID Mapping" tools

UniProt data

Protein spotlight

at the heart of things

There is no life without a heart. And none without a beat. Which is why the heart is one of the first organs to be formed - albeit in a rudimentary fashion - very early on in life; as early as two weeks in the human embryo which, at that point, bears little resemblance to a human being…