STK4, Official Symbol STK4provided by HGNC Official Full Name serine/threonine kinase 4provided by HGNC Primary source HGNC:HGNC:11408 See related Ensembl:ENSG00000101109 MIM:604965; AllianceGenome:HGNC:11408 Gene type protein coding RefSeq status REVIEWED Organism Homo sapiens Lineage Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo Also known as KRS2; MST1; YSK3 Summary The protein encoded by this gene is a cytoplasmic kinase that is structurally similar to the yeast Ste20p kinase, which acts upstream of the stress-induced mitogen-activated protein kinase cascade. The encoded protein can phosphorylate myelin basic protein and undergoes autophosphorylation. A caspase-cleaved fragment of the encoded protein has been shown to be capable of phosphorylating histone H2B. The particular phosphorylation catalyzed by this protein has been correlated with apoptosis, and it's possible that this protein induces the chromatin condensation observed in this process. [provided by RefSeq, Jul 2008] Annotation information Note: MST1 (Gene ID: 4485) and STK4 (Gene ID: 6789) share the MST1 symbol/alias in common. MST1 is a widely used alternative name for serine/threonine kinase 4 (STK4), which can be confused with the official symbol for macrophage stimulating 1 (MST1). [01 Jun 2018] Expression Broad expression in lymph node (RPKM 17.1), appendix (RPKM 14.6) and 24 other tissues See more Orthologs mouse all