Proteins
Curated comments from UniProt
Type | Comment | Proteins |
---|---|---|
BRI1_ARATH | developmental stage | Expressed constitutively in either dark- or light-grown seedlings. |
BRI1_ARATH | function | Receptor with a dual specificity kinase activity acting on both serine/threonine- and tyrosine-containing substrates. Regulates, in response to brassinosteroid binding, a signaling cascade involved in plant development, including expression of light- and stress-regulated genes, promotion of cell elongation, normal leaf and chloroplast senescence, and flowering. Binds brassinolide (BL), and less effectively castasterone (CS), but not 2,3,22,23-O-tetramethylbrassinolide or ecdysone. May be involved in a feedback regulation of brassinosteroid biosynthesis. Phosphorylates BRI1-associated receptor kinase 1 (BAK1), Transthyretin-Like protein (TTL) and SERK1 on 'Ser-299' and 'Thr-462' in vitro (PubMed:15319482). May have a guanylyl cyclase activity (PubMed:10557222, PubMed:10938344, PubMed:17138891, PubMed:17520012, PubMed:18694562, PubMed:19124768). Phosphorylates BSK1, BSK2 and BSK3 in vitro (PubMed:18653891). Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 and BSK11 in vitro (PubMed:23496207). |
BRI1_ARATH | similarity | Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. |
BRI1_ARATH | tissue specificity | Expressed ubiquitously. |
Function
Gene Ontology
cellular component | |
---|---|
plasma membrane | ECO |
endosome | ECO |
protein-containing complex | ECO |
endosome membrane | ECO |
molecular function | |
ATP binding | ECO |
histone H2AS1 kinase activity | ECO |
protein serine kinase activity | ECO |
steroid binding | ECO |
identical protein binding | ECO |
protein kinase activity | ECO |
transmembrane receptor protein tyrosine kinase activity | ECO |
protein serine/threonine kinase activity | ECO |
protein homodimerization activity | ECO |
protein heterodimerization activity | ECO |
biological process | |
positive regulation of flower development | ECO |
microtubule bundle formation | ECO |
protein phosphorylation | ECO |
skotomorphogenesis | ECO |
detection of brassinosteroid stimulus | ECO |
leaf development | ECO |
brassinosteroid mediated signaling pathway | ECO |
anther wall tapetum cell differentiation | ECO |
pollen exine formation | ECO |
response to UV-B | ECO |
seedling development | ECO |
brassinosteroid homeostasis | ECO |
Interactions
Interaction Network
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