Serine/threonine-protein kinase component of the WNK1-SPAK/OSR1 kinase cascade, which acts as a key regulator of blood pressure and regulatory volume increase by promoting ion influx . WNK1 mediates regulatory volume increase in response to hyperosmotic stress by acting as a molecular crowding sensor, which senses cell shrinkage and mediates formation of a membraneless compartment by undergoing liquid-liquid phase separation . The membraneless compartment concentrates WNK1 with its substrates, OXSR1/OSR1 and STK39/SPAK, promoting WNK1-dependent phosphorylation and activation of downstream kinases OXSR1/OSR1 and STK39/SPAK . Following activation, OXSR1/OSR1 and STK39/SPAK catalyze phosphorylation of ion cotransporters SLC12A1/NKCC2, SLC12A2/NKCC1, SLC12A5/KCC2 and SLC12A6/KCC3, regulating their activity . Phosphorylation of Na-K-Cl cotransporters SLC12A2/NKCC1 and SLC12A2/NKCC1 promote their activation and ion influx; simultaneously, phosphorylation of K-Cl cotransporters SLC12A5/KCC2 and SLC12A6/KCC3 inhibit their activity, blocking ion efflux . Also acts as a regulator of angiogenesis in endothelial cells via activation of OXSR1/OSR1 and STK39/SPAK: activation of OXSR1/OSR1 regulates chemotaxis and invasion, while STK39/SPAK regulates endothelial cell proliferation . Also acts independently of the WNK1-SPAK/OSR1 kinase cascade by catalyzing phosphorylation of other substrates, such as SYT2, PCF11 and NEDD4L . Mediates phosphorylation of SYT2, regulating SYT2 association with phospholipids and membrane-binding (By similarity). Regulates mRNA export in the nucleus by mediating phosphorylation of PCF11, thereby decreasing the association between PCF11 and POLR2A/RNA polymerase II and promoting mRNA export to the cytoplasm . Acts as a negative regulator of autophagy . Required for the abscission step during mitosis, independently of the WNK1-SPAK/OSR1 kinase cascade . May also play a role in actin cytoskeletal reorganization . Also acts as a scaffold protein independently of its protein kinase activity: negatively regulates cell membrane localization of various transporters and channels, such as SLC4A4, SLC26A6, SLC26A9, TRPV4 and CFTR (By similarity). Involved in the regulation of epithelial Na(+) channel (ENaC) by promoting activation of SGK1 in a kinase-independent manner: probably acts as a scaffold protein that promotes the recruitment of SGK1 to the mTORC2 complex in response to chloride, leading to mTORC2-dependent phosphorylation and activation of SGK1 . Acts as an assembly factor for the ER membrane protein complex independently of its protein kinase activity: associates with EMC2 in the cytoplasm via its amphipathic alpha-helix, and prevents EMC2 ubiquitination and subsequent degradation, thereby promoting EMC2 stabilization . .; [Isoform 3]: Kinase-defective isoform specifically expressed in kidney, which acts as a dominant-negative regulator of the longer isoform 1 . Does not directly inhibit WNK4 and has no direct effect on sodium and chloride ion transport (By similarity). Down-regulates sodium-chloride cotransporter activity indirectly by inhibiting isoform 1, it associates with isoform 1 and attenuates its kinase activity (By similarity). In kidney, may play an important role regulating sodium and potassium balance (By similarity). .

Serine/threonine-protein kinase WNK1 (EC 2.7.11.1) (Erythrocyte 65 kDa protein) (p65) (Kinase deficient protein) (Protein kinase lysine-deficient 1) (Protein kinase with no lysine 1) (hWNK1),WNK1 HSN2 KDP KIAA0344 PRKWNK1

Q9H4A3,P83741,Q9JIH7

65125/232341/116477

Human,Mouse,Rat

WB,IHC,IF,ICC,ELISA

WB 1:500-2000
IHC 1:50-300
IF 1:50-200
ICC 1:50-200
ELISA 1:5000

Phospho-WNK1 (T60) Polyclonal Antibody detects endogenous levels of WNK1 protein only when phosphorylated at T60.

230kDa

Rabbit

Synthesized peptide derived from human WNK1 around the phosphorylation site of Thr58.

Polyclonal

Rabbit,IgG

The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen.

Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% New type preservative N.

1 mg/ml

Store at -20℃. Stable for 12 months from date of receipt.