Catalytic activity:ATP + a protein = ADP + a phosphoprotein. ,cofactor:Manganese. ,Function:Plays a role in signal transduction in blood cells. Contributes to both cell proliferation and survival and thus provide a selective advantage in tumorigenesis. May affect the structure or silencing of chromatin by phosphorylating HP1 gamma/CBX3. ,induction:Strongly induced in leukocytes by the JAK/STAT pathway in response to cytokines. ,PTM:Autophosphorylated on both serine/threonine and tyrosine residues. ,similarity:Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. PIM subfamily. ,similarity:Contains 1 protein kinase domain. ,subunit:Binds to RP9. Isoform 2 is isolated as a monomer whereas isoform 1 complexes with other proteins. Isoform 1 , but not isoform 2 , binds BMX. ,tissue specificity:Expressed primarily in cells of the hematopoietic and germline lineages. Isoform 1 and isoform 2 are both expressed in prostate cancer cell lines. ,
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