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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.


  • Forthcoming changes
    Planned changes for UniProt

  • UniProt release 2015_07
    Coding-non-coding RNAs: a game of hide-and-seek | Cross-references to ESTHER and Genevisible | Removal of the cross-references to Geneve...

  • UniProt release 2015_06
    POLQ, a new target for cancer therapy?

  • UniProt release 2015_05
    A never-ending race between evolution and genomic integrity | Removal of IPI species proteome data sets from FTP site | UniProtKB XSD ch...

  • UniProt release 2015_04
    Of CAT tails and protein translation by-products | Reducing redundancy in proteomes | Retirement of UniProt Metagenomic and Environmenta...

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

  • Retrieve/ID mapping
    This tool merges the "Retrieve" and "ID Mapping" tools

UniProt data

Protein spotlight

the length of things

It is important to know when to stop. A cell has to know when to stop expanding. A flower's pistil and its stamen when to stop elongating. And a flagellum to stop extending. Because there is a fair chance that without this knowledge, it would be difficult to keep organisms alive. But how do all these various parts of living matter know when the time has come to stop growing? There must be a mechanism of some kind…