STRADB Antibody – Rabbit Polyclonal

This gene encodes a protein that belongs to the serine/threonine protein kinase STE20 subfamily. One of the active site residues in the protein kinase domain of this protein is altered, and it is thus a pseudokinase. This protein is a component of a complex involved in the activation of serine/threonine kinase 11, a master kinase that regulates cell polarity and energy-generating metabolism. This complex regulates the relocation of this kinase from the nucleus to the cytoplasm, and it is essential for G1 cell cycle arrest mediated by this kinase. The protein encoded by this gene can also interact with the X chromosome-linked inhibitor of apoptosis protein, and this interaction enhances the anti-apoptotic activity of this protein via the JNK1 signal transduction pathway. Two pseudogenes, located on chromosomes 1 and 7, have been found for this gene. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2011]

STLK6: Pseudokinase which, in complex with CAB39/MO25 (CAB39/MO25alpha or CAB39L/MO25beta), binds to and activates STK11/LKB1. Adopts a closed conformation typical of active protein kinases and binds STK11/LKB1 as a pseudosubstrate, promoting conformational change of STK11/LKB1 in an active conformation. Belongs to the protein kinase superfamily. STE Ser/Thr protein kinase family. STE20 subfamily. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Kinase, protein; Motility/polarity/chemotaxis; Protein kinase, STE; Protein kinase, Ser/Thr (non-receptor); STE group; STE20 family; STLK subfamily

Chromosomal Location of Human Ortholog: 2q33.1

Cellular Component: cytoplasm; cytosol; nucleus

Molecular Function: protein binding; ATP binding; protein kinase activity; receptor signaling protein serine/threonine kinase activity

Biological Process: cell morphogenesis; activation of protein kinase activity; insulin receptor signaling pathway; JNK cascade; protein export from nucleus; mitotic cell cycle; cell cycle arrest; protein amino acid phosphorylation