WNK1 Antibodies

Target Information

Serine/threonine kinase which plays an important role in the regulation of electrolyte homeostasis, cell signaling, survival, and proliferation. Acts as an activator and inhibitor of sodium-coupled chloride cotransporters and potassium-coupled chloride cotransporters respectively. Activates SCNN1A, SCNN1B, SCNN1D and SGK1. Controls sodium and chloride ion transport by inhibiting the activity of WNK4, by either phosphorylating the kinase or via an interaction between WNK4 and the autoinhibitory domain of WNK1. WNK4 regulates the activity of the thiazide-sensitive Na-Cl cotransporter, SLC12A3, by phosphorylation. WNK1 may also play a role in actin cytoskeletal reorganization. Phosphorylates NEDD4L. Acts as a scaffold to inhibit SLC4A4, SLC26A6 as well as CFTR activities and surface expression, recruits STK39 which mediates the inhibition. Isoform 3: Dominant-negative regulator of the longer isoform 1. Does not have kinase activity, does not directly inhibit WNK4 and has no direct effect on sodium and chloride ion transport. Downregulates sodium-chloride cotransporter activity indirectly by inhibiting isoform 1, it associates with isoform 1 and attenuates its kinase activity. In kidney, may play an important role regulating sodium and potassium balance. Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. WNK subfamily. Widely expressed, with highest levels observed in the testis, heart, kidney and skeletal muscle. Isoform 3 is kidney-specific and specifically expressed in the distal convoluted tubule (DCT) and connecting tubule (CNT) of the nephron. 6 human isoforms generated by alternative promoter usage or alternative splicing have been reported. Note: This description may include information from UniProtKB.

Alternate Names

Erythrocyte 65 kDa protein; HSAN2; HSN2; hWNK1; KDP; KIAA0344; Kinase deficient protein; p65; PHA2C; PPP1R167; PRKWNK1; prostate-derived sterile 20-like kinase; Protein kinase lysine-deficient 1; Protein kinase with no lysine 1; protein kinase, lysine deficient 1; protein phosphatase 1, regulatory subunit 167; PSK; Serine/threonine-protein kinase WNK1; serine/threonine-protein kinase WNK1 1; serine/threonine-protein kinase WNK1 2; WNK lysine deficient protein kinase 1; WNK1