Description
Product Characteristics:
Novel human Ste20-related kinase Mst4 is biologically active in the activation of MEK/ERK pathway and in mediating cell growth and transformation. It is pro apoptotic and is highly expressed in placenta, thymus, and peripheral blood leukocytes. Interaction with Golgi matrix protein GOLGA2 results in autophosphorylation on Thr-178, possibly as a consequence of stabilization of dimer formation. This may also be activated by C terminal cleavage. MST3 or Mammalian Sterile 20-like kinase 3 is a member of the germinal center kinase-III family. MST3 contains a conserved kinase domain at its NH(2)-terminus and a regulatory domain at its COOH-terminus. Caspase-mediated cleavage of the regulatory domain of MST3 activates its intrinsic kinase activity and leads to nuclear translocation. Expression of COOH-terminal truncated MST3 in cells results in DNA fragmentation and induction of apoptosis. It can inhibit cell migration in a fashion dependent on autophosphorylation and can regulate paxillin phosphorylation through tyrosine phosphatase PTP-PEST. Mitogen activated protein kinase cascades have been conserved throughout evolution. In mammals, these cascades allow responses to complex stimuli such as growth factors and inflammatory cytokines. In yeast, STK25 functions upstream of the MAPK cascade.
Subcellular location: Cytoplasm, Nucleus, Cell membrane
Synonyms: MST4+MST3+STK25phospho T178 + T190 + T174,p-MST4 + MST3 + STK25 phospho T178 + T190 + T174,Mammalian STE20 like protein kinase 3, Mammalian Ste20 like protein kinase 4, Mammalian sterile 20 like 4, MASK, mess1, MGC94619, MST 3, MST 4, MST, Mst2, MST3 and SOK1 related kinase, MST3, MST3B, OTTHUMP00000018592, OTTHUMP00000018593, Protein kinase homolog serine/threonine kinase 3 Ste20 yeast homolog, RGD1563568, RP11-111L24.5, Serine/threonine kinase 24 STE20 homolog yeast, Serine/threonine kinase 24, Serine/threonine kinase 25, Serine/threonine protein kinase 24, Serine/threonine protein kinase MASK, Serine/threonine protein kinase MST 4, Serine/threonine protein kinase MST4, SOK1, STE20, Ste20 like, Ste20 like kinase, STE20 like kinase 3, STE20 like kinase MST 4, STE20 like kinase MST3, STE20 like kinase MST4, Ste20 yeast homolog, Ste20/oxidant stress response kinase 1, Sterile 20 oxidant stress response kinase 1, sterile 20 like kinase 3, Sterile 20/oxidant stress-response kinase 1, STK3, Yeast Sps1/Ste20 related kinase 1, YSK1.
Target Information: The yeast 'Sterile 20' gene (STE20) functions upstream of the mitogen-activated protein kinase (MAPK) cascade. In mammals, protein kinases related to STE20 can be divided into 2 subfamilies based on their structure and regulation. Members of the PAK subfamily (see PAK3\, MIM 300142) contain a C-terminal catalytic domain and an N-terminal regulatory domain that has a CDC42 (MIM 116952)-binding domain. In contrast, members of the GCK subfamily (see MAP4K2\, MIM 603166), also called the Sps1 subfamily, have an N-terminal catalytic domain and a C-terminal regulatory domain without a CDC42-binding domain. STK24 belongs to the GCK subfamily of STE20-like kinases (Zhou et al., 2000 [PubMed 10644707]).[supplied by OMIM, Mar 2008]