This domain family is found in eukaryotes, and is typically between 113 and 125 amino acids in length. The family is found in association with Pfam:PF03441, Pfam:PF00875. Cryptochromes are blue/ultraviolet-A light sensing photoreceptors involved in regulating various growth and developmental responses in plants.

1: Cryptochrome 1 from Brassica napus is up-regulated by blue light and controls hypocotyl/stem growth and anthocyanin accumulation. Chatterjee M, Sharma P, Khurana JP; Plant Physiol. 2006;141:61-74. PMID:16531484