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OSR1 oxidative-stress responsive 1 protein is a ubiquitously expressed protein kinase of the STE20 family. Regulates Na-K-Cl cotransporter (NKCC) activity. Regulates downstream kinases in response to environmental stress. May also have a function in regulating the actin cytoskeleton. Binds to and phosphorylates PAK1. Interacts and is phosphorylated by WNK1. Knockdown of either WNK1 or OXSR1 reduces NKCC activity. Interacts with chloride channel proteins SLC12A6 isoform 2, SLC12A1 and SLC12A2 but not with SLC12A4 and SLC12A7, possibly establishing sensor/signaling modules that initiate the cellular response to environmental stress. An important paralog of this gene is STRADB. Note: This description may include information from UniProtKB.
Protein type: EC; FRAY subfamily; Kinase, protein; Protein kinase, STE; Protein kinase, Ser/Thr (non-receptor); STE group; STE20 family
Chromosomal Location of Human Ortholog: 3p22.2
Cellular Component: cytoplasm; cytosol
Molecular Function: ATP binding; magnesium ion binding; protein binding; protein serine/threonine kinase activity
Biological Process: activation of protein kinase activity; peptidyl-threonine phosphorylation; protein amino acid phosphorylation; regulation of apoptosis; regulation of mitotic cell cycle; stress-activated protein kinase signaling pathway
Reference #:  O95747 (UniProtKB)
Alt. Names/Synonyms: KIAA1101; OSR1; Oxidative stress-responsive 1 protein; oxidative-stress responsive 1; OXSR1; Serine/threonine-protein kinase OSR1
Gene Symbols: OXSR1
Molecular weight: 58,022 Da
Basal Isoelectric point: 6.03  Predict pI for various phosphorylation states
Protein-Specific Antibodies or siRNAs from Cell Signaling Technology® Total Proteins
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