Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.

Keyword - Photoreceptor protein (KW-0600)

Keywords navigation



Protein involved in the convertion of light directly into a signal. These proteins are classified in a limited number of families based on the chemical structure of the light-absorbing chromophores involved, and also on protein sequence similarities to discriminate the many photoreceptor proteins that bind a flavin derivative. Accordingly, the most important families are the rhodopsins, the phytochromes, the xanthopsins, the cryptochromes, the phototropins and the BLUF proteins.


  • Light-sensing protein
  • Photosensor protein


Molecular function

Gene Ontology


photoreceptor activity [ GO:0009881 ]


ReceptorPhotoreceptor proteinMolecular functionLigandSensory transductionChromophoreBiological process
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.

Do not show this banner again