Mitogen-activated protein kinase kinase kinase kinase 1

UniProtKB accession:  P70218

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Serine/threonine-protein kinase, which plays a role in the response to environmental stress (By similarity). Appears to act upstream of the JUN N-terminal pathway (PubMed:9003777). Activator of the Hippo signaling pathway which plays a pivotal role in organ size control and tumor suppression by restricting proliferation and promoting apoptosis. MAP4Ks act in parallel to and are partially redundant with STK3/MST2 and STK4/MST2 in the phosphorylation and activation of LATS1/2, and establish MAP4Ks as components of the expanded Hippo pathway (By similarity). May play a role in hematopoietic lineage decisions and growth regulation (PubMed:9003777). Together with CLNK, it enhances CD3-triggered activation of T-cells and subsequent IL2 production (PubMed:11509653).