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.

Serine/threonine kinase 25; Serine/threonine kinase 25 (STE20 homolog, yeast); Serine/threonine kinase 25 (STE20 homolog, yeast), isoform CRA_a; Serine/threonine kinase 25 (yeast); Serine/threonine protein kinase 25; Serine/threonine-protein kinase 25; SOK-1; SOK1; Ste20 like kinase; Ste20 yeast homolog; Ste20-like; STE20-like kinase; Ste20/oxidant stress response kinase 1; Sterile 20 (oxidant stress response kinase 1); Sterile 20/oxidant stress-response kinase 1; STK25; STK25_HUMAN; Yeast Sps1/Ste20 related kinase 1; YSK1; C86992.

Human,Mouse,Rat,Pig,Cow,Horse,Sheep

IHC,IF,ICC,FC

IHC 1:100-500
IF 1:50-200
ICC 1:100-1:400
FC 1:100

48kD

10494

O00506

https://www.uniprot.org/uniprotkb/O00506

STK25, MST4: Cytoplasmic, Golgi Apparatus. MST3: Cytoplasm. Nucleus. Membrane. Note=The truncated form (MST3/N) translocates to the nucleus. Co-localizes with STK38L in the membrane.

MST3: Isoform A is ubiquitous. Isoform B is expressed in brain with high expression in hippocampus and cerebral cortex.

KLH conjugated synthetic peptide derived from human STK25/YSK1

Rabbit

Polyclonal

IgG

affinity purified by Protein A

Liquid

0.01M TBS (pH7.4) with 1% BSA, 0.02% Proclin300 and 50% Glycerol.

Shipped at 4℃. Store at -20℃ for one year. Avoid repeated freeze/thaw cycles.