| Locus: |
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AT3G45780 |
| Name: |
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JK224, NONPHOTOTROPIC HYPOCOTYL 1, NPH1, PHOT1, PHOTOTROPIN 1, ROOT PHOTOTROPISM 1, RPT1 |
| Description: |
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Blue-light photoreceptor. Contains a light activated serine-threonine kinase domain and LOV1 and LOV2 repeats. Mutants are defective in blue-light response. Mediates blue light-induced growth enhancements. PHOT1 and PHOT2 mediate blue light-dependent activation of the plasma membrane H+-ATPase in guard cell protoplasts. PHOT1 undergoes blue-light-dependent autophosphorylation. At least eight phosphorylation sites have been identified in PHOT1. Phosphorylation of serine851 in the activation loop of PHOT1 appears to be required for stomatal opening, chloroplast accumulation, leaf flattening, and phototropism, and phosphorylation of serine849 may also contribute to the regulation of these responses. Phosphorylation-dependent binding of 14-3-3 proteins to the Hinge1 region of PHOT1 appears to require serine350 and serine376. |
| Associations: |
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| Category |
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Relationship Type |
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Keyword |
| GO Biological Process |
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involved in |
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blue light signaling pathway ,chloroplast accumulation movement ,chloroplast avoidance movement ,negative regulation of anion channel activity by blue light ,phosphorylation ,phototropism ,protein autophosphorylation ,regulation of proton transport ,regulation of stomatal movement ,response to blue light
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| GO Cellular Component |
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located in |
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cell ,cell surface ,cytoplasm ,internal side of plasma membrane ,vacuole
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| GO Molecular Function |
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functions in |
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FMN binding ,protein binding
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| GO Molecular Function |
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has |
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FMN binding ,blue light photoreceptor activity ,identical protein binding ,kinase activity ,protein binding ,protein serine/threonine kinase activity
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| Growth and Developmental Stages |
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expressed during |
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4 anthesis ,4 leaf senescence stage ,C globular stage ,D bilateral stage ,E expanded cotyledon stage ,F mature embryo stage ,LP.02 two leaves visible ,LP.04 four leaves visible ,LP.06 six leaves visible ,LP.08 eight leaves visible ,LP.10 ten leaves visible ,LP.12 twelve leaves visible ,petal differentiation and expansion stage
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| Plant structure |
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expressed in |
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carpel ,cauline leaf ,collective leaf structure ,cotyledon ,flower ,guard cell ,hypocotyl ,inflorescence meristem ,leaf apex ,leaf lamina base ,pedicel ,petal ,petiole ,plant embryo ,pollen ,root ,seed ,sepal ,shoot apex ,shoot system ,stamen ,stem ,vascular leaf
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Mutants: |
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CS801049 (line206) CS801080 (line207) CS801090 (line208) CS801091 (line209) |
| wild type tissue expression: |
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| wild type tissue expression ... |
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