- Protein Name
- Serine/threonine-protein kinase WNK4 {ECO:0000305}
- Gene Name
- WNK4
- Organism
-
Homo sapiens
- Function
- 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, SGK1, TRPV5 and TRPV6. Regulates the activity of the thiazide-sensitive Na-Cl cotransporter, SLC12A3, by phosphorylation which appears to prevent membrane trafficking of SLC12A3. Also inhibits the renal K(+) channel, KCNJ1, via a kinase-independent mechanism by which it induces clearance of the protein from the cell surface by clathrin-dependent endocytosis. WNK4 appears to act as a molecular switch that can vary the balance between NaCl reabsorption and K(+) secretion to maintain integrated homeostasis. Phosphorylates NEDD4L. Acts as a scaffold to inhibit SLC4A4 as well as CFTR activities and surface expression, recruits STK39 which mediates the inhibition (By similarity). {ECO:0000250|UniProtKB:Q80UE6, ECO:0000269|PubMed:20525693}.
| Site |
Maximum Consensus Site Population |
Minimum Consensus Site Population |
Median Consensus Site Population |
| DFG |
21 |
21 |
21.0 |
| PDB ID |
Maximum Consensus Site Population |
| MPP site |
AAS site |
MT3 site |
LBP site |
ATP site |
DEF site |
DFG site |
CMP site |
PMP site |
EDI site |
DRS site |
PDIG site |
PIF site |
| Total Druggable Structures per Site |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
|
AFQ96J92
|
0 |
0 |
0 |
0 |
0 |
0 |
21 |
0 |
0 |
0 |
0 |
0 |
0 |