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Keyword - Photoreceptor protein (KW-0600)

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Definition

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.

Synonyms

  • Light-sensing protein
  • Photosensor protein

Category

Molecular function

GOi

photoreceptor activity [ GO:0009881 ]

Graphical

ReceptorPhotoreceptor proteinMolecular functionLigandSensory transductionChromophoreBiological process