Gene: AT4G08920 (Arabidopsis thaliana)

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Gene Identifier
Transcript Identifier
Gene Type
Coding gene
Chr4 : 5724260-5726905 : positive


Gene family
(139 genes in 29 species)
specific family
(89 genes in 29 species)
specific family


cryptochrome 1
Curated Summary
Encodes CRY1, a flavin-type blue-light photoreceptor with ATP binding and autophosphorylation activity. Functions in perception of blue / green ratio of light. The photoreceptor may be involved in electron transport. Mutant phenotype displays a blue light-dependent inhibition of hypocotyl elongation. Photoreceptor activity requires light-induced homodimerisation of the N-terminal CNT1 domains of CRY1. Involved in blue-light induced stomatal opening. The C-terminal domain of the protein undergoes a light dependent conformational change. Also involved in response to circadian rhythm. Mutants exhibit long hypocotyl under blue light and are out of phase in their response to circadian rhythm. CRY1 is present in the nucleus and cytoplasm. Different subcellular pools of CRY1 have different functions during photomorphogenesis of Arabidopsis seedlings.
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Type Value







Biological Process

GO termEvidence(s)ProviderDescriptionSource
GO:0009785 TAS, IEA, UniProtblue light signaling pathway1
GO:0006952 IEAUniProtdefense response1
GO:0007623 IEP, NAS, UniProtcircadian rhythm1 2 3
GO:0009637 IDA, IMP, NAS, UniProtresponse to blue light1 2 3 4
GO:0018298 IEAUniProtprotein-chromophore linkage1
GO:0009416 IDA, IEP, UniProtresponse to light stimulus1 2 3 4
GO:0009640 IMPUniProtphotomorphogenesis1
GO:0051510 IMPUniProtregulation of unidimensional cell growth1
GO:0046777 IDAUniProtprotein autophosphorylation1
GO:0009638 IMPUniProtphototropism1 2
GO:0055114 IMPUniProtoxidation-reduction process1
GO:0009414 IGIUniProtresponse to water deprivation1
GO:0010118 IMP, IGI, UniProtstomatal movement1 2 3
GO:0010343 IMPUniProtsinglet oxygen-mediated programmed cell death1
GO:0046283 IMPUniProtanthocyanin-containing compound metabolic process1
GO:0010617 IMPUniProtcircadian regulation of calcium ion oscillation1
GO:0010075 IGIUniProtregulation of meristem growth1
GO:0010244 IMP, IEP, UniProtresponse to low fluence blue light stimulus by blue low-fluence system1 2 3 4
GO:1901371 IMPUniProtregulation of leaf morphogenesis1 2
GO:1900426 IMPUniProtpositive regulation of defense response to bacterium1 2
GO:1901672 IMPUniProtpositive regulation of systemic acquired resistance1 2
GO:0060918 IMPUniProtauxin transport1 2
GO:1901332 IMPUniProtnegative regulation of lateral root development1 2
GO:0009583 IMPUniProtdetection of light stimulus1
GO:1902448 IMPUniProtpositive regulation of shade avoidance1 2
GO:0072387 IDA, IMP, UniProtflavin adenine dinucleotide metabolic process1 2 3 4
GO:0071000 IDA, IMP, UniProtresponse to magnetism1 2 3 4
GO:0009644 IMPUniProtresponse to high light intensity1 2
GO:0010117 IMPUniProtphotoprotection1 2
GO:0009646 IMPUniProtresponse to absence of light1 2
GO:0042752 IMPUniProtregulation of circadian rhythm1 2
GO:1902347 IMPUniProtresponse to strigolactone1 2
GO:0099402 IMPUniProtplant organ development1 2
GO:0010310 IDAUniProtregulation of hydrogen peroxide metabolic process1 2
GO:2000377 IDAUniProtregulation of reactive oxygen species metabolic process1 2
GO:0010114 IMPUniProtresponse to red light1 2
GO:0010218 IMPUniProtresponse to far red light1 2
GO:1901529 IMPUniProtpositive regulation of anion channel activity1 2

Molecular Function

GO termEvidence(s)ProviderDescriptionSource
GO:0009882 IMP, IEA, UniProtblue light photoreceptor activity1
GO:0046872 IEAUniProtmetal ion binding1
GO:0005515 IPIGene Ontologyprotein binding1 2
GO:0004672 IDAUniProtprotein kinase activity1
GO:0005524 IDAUniProtATP binding1
GO:0042802 IPIUniProtidentical protein binding1
GO:0042803 IPIGene Ontologyprotein homodimerization activity1
GO:0016301 IDAUniProtkinase activity1 2
GO:0071949 IDAUniProtFAD binding1 2

Cellular Component

GO termEvidence(s)ProviderDescriptionSource
GO:0005634 IDA, ISM, UniProtnucleus1 2
GO:0016605 IEAUniProtPML body1
GO:0005737 IDAUniProtcytoplasm1
GO:0016604 IDAUniProtnuclear body1 2

Color Legend

Experimental Evidence
Electronic Evidence
Computational Reviewed Evidence
GO Sources:   Primary     Orthology     Homology  
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InterPro Description
IPR014729Rossmann-like alpha/beta/alpha sandwich fold
IPR006050DNA photolyase, N-terminal
IPR005101Cryptochrome/DNA photolyase, FAD-binding domain
IPR020978Cryptochrome C-terminal
IPR002081Cryptochrome/DNA photolyase class 1
IPR018394Cryptochrome/DNA photolyase class 1, conserved site, C-terminal
IPR014134Cryptochrome, plant

Mapman id Description stimuli response.light.UV-A/blue light.cryptochrome-mediated photoperception.cryptochrome photoreceptor (CRY)
No SignalP domains detected for this gene.