This gene encodes a member of the Ser/Thr protein kinase family. This kinase functions as a mitogen-activated protein kinase (MAP kinase)- activated protein kinase. MAP kinases are also known as extracellular signal-regulated kinases (ERKs), act as an integration point for multiple biochemical signals. This kinase was shown to be activated by growth inducers and stress stimulation of cells. In vitro studies demonstrated that ERK, p38 MAP kinase and Jun N-terminal kinase were all able to phosphorylate and activate this kinase, which suggested the role of this kinase as an integrative element of signaling in both mitogen and stress responses. This kinase was reported to interact with, phosphorylate and repress the activity of E47, which is a basic helix-loop-helix transcription factor known to be involved in the regulation of tissue-specific gene expression and cell differentiation.
^McLaughlin MM, Kumar S, McDonnell PC, Van Horn S, Lee JC, Livi GP et al. (June 1996). "Identification of mitogen-activated protein (MAP) kinase-activated protein kinase-3, a novel substrate of CSBP p38 MAP kinase". J Biol Chem271 (14): 8488–92. doi:10.1074/jbc.271.14.8488. PMID8626550.
^Neufeld B, Grosse-Wilde A, Hoffmeyer A, Jordan BW, Chen P, Dinev D et al. (July 2000). "Serine/Threonine kinases 3pK and MAPK-activated protein kinase 2 interact with the basic helix-loop-helix transcription factor E47 and repress its transcriptional activity". J. Biol. Chem.275 (27): 20239–42. doi:10.1074/jbc.C901040199. PMID10781029.
Wei MH, Latif F, Bader S, Kashuba V, Chen JY, Duh FM et al. (1996). "Construction of a 600-kilobase cosmid clone contig and generation of a transcriptional map surrounding the lung cancer tumor suppressor gene (TSG) locus on human chromosome 3p21.3: progress toward the isolation of a lung cancer TSG". Cancer Res.56 (7): 1487–92. PMID8603390.
Clifton AD, Young PR, Cohen P (1996). "A comparison of the substrate specificity of MAPKAP kinase-2 and MAPKAP kinase-3 and their activation by cytokines and cellular stress". FEBS Lett.392 (3): 209–14. doi:10.1016/0014-5793(96)00816-2. PMID8774846.
Kumar S, McDonnell PC, Gum RJ, Hand AT, Lee JC, Young PR (1997). "Novel homologues of CSBP/p38 MAP kinase: activation, substrate specificity and sensitivity to inhibition by pyridinyl imidazoles". Biochem. Biophys. Res. Commun.235 (3): 533–8. doi:10.1006/bbrc.1997.6849. PMID9207191.
Neufeld B, Grosse-Wilde A, Hoffmeyer A, Jordan BW, Chen P, Dinev D et al. (2000). "Serine/Threonine kinases 3pK and MAPK-activated protein kinase 2 interact with the basic helix-loop-helix transcription factor E47 and repress its transcriptional activity". J. Biol. Chem.275 (27): 20239–42. doi:10.1074/jbc.C901040199. PMID10781029.
Voncken JW, Niessen H, Neufeld B, Rennefahrt U, Dahlmans V, Kubben N et al. (2005). "MAPKAP kinase 3pK phosphorylates and regulates chromatin association of the polycomb group protein Bmi1". J. Biol. Chem.280 (7): 5178–87. doi:10.1074/jbc.M407155200. PMID15563468.
Rual JF, Venkatesan K, Hao T, Hirozane-Kishikawa T, Dricot A, Li N et al. (2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature437 (7062): 1173–8. doi:10.1038/nature04209. PMID16189514.