Name :
Recombinant Human MST4 Protein (GST Tag)
Biological Activity :
Background :
MST4, also known as mammalian STE2-like protein kinase 4, is a novel member of the germinal center kinase subfamily of human Ste2-like kinases and is closely related to MST3. The 416 amino acid full-length MST4 contains a C-terminal regulatory domain and an N-terminal kinase domain, both of which are required for full activation of the kinase. MST4 is highly expressed in the placenta, thymus, and peripheral blood leukocytes. MST4 specifically activates ERK but not JNK or p38 MAPK in transiently transfected cells or stable cell lines, and thus is biologically active in the activation of the MEK/ERK pathway mediating cell growth and transformation. Further, MST4 kinase activity is stimulated significantly by epidermal growth factor receptor (EGFR) ligands, which are known to promote the growth of certain cancer cells. Accordingly, MST4 has a potential role in signal transduction pathways involved in cancer progression. Three alternatively spliced isoforms of MST4 have been isolated, and isoform 3 lacks an exon encoding kinase domain and may function as a dominant-negative regulator of the MST4 kinase.
Biological Activity :
The specific activity was determined to be 15 nmol/min/mg using MBP as substrate.
Expression Host :
Human
Source :
Baculovirus-Insect Cells
Tag :
Protein Accession No. :
NP_057626.2
NCBI Gene ID :
Synonyms :
Synonyms :
serine/threonine protein kinase 26
Amino Acid Sequence :
Molecular Weight :
The recombinant human MST41/GST chimera consists of 641 amino acids and predicts a molecular mass of 73 kDa. It migrates as an approximately 65 kDa band in SDS-PAGE under reducing conditions.
Purity :
> 95 % as determined by SDS-PAGE
State of Matter :
Product Concentration :
Storage and Stability :
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃. Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Endotoxin Level :
< 1.0 EU per μg of the protein as determined by the LAL method
Protein Construction :
A DNA sequence encoding the human MST4 isoform 1 (NP_057626.2) (Met 1-Pro 416) was expressed with the fused GST tag at N-terminus.
Buffer Solution :
Supplied as sterile 50mM Tris, 100mM NaCl, pH 8.0, 25% glycerol, 0.6mM GSH, 0.5mM PMSF, 0.5mM EDTA, 2mM DTTPlease contact us for any concerns or special requirements.Please refer to the specific buffer information in the hardcopy of datasheet.
Shipping :
Kinases are highly recommended to be shipped at frozen temperature with blue ice or dry ice.Shipment made at ambient temperature may seriously affect the activity of the ordered products.
Redissolution :
A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
Synonyms :
MASK Protein, Human; MST4 Protein, Human MST4 背景信息 MST4, also known as mammalian STE2-like protein kinase 4, is a novel member of the germinal center kinase subfamily of human Ste2-like kinases and is closely related to MST3. The 416 amino acid full-length MST4 contains a C-terminal regulatory domain and an N-terminal kinase domain, both of which are required for full activation of the kinase. MST4 is highly expressed in the placenta, thymus, and peripheral blood leukocytes. MST4 specifically activates ERK but not JNK or p38 MAPK in transiently transfected cells or stable cell lines, and thus is biologically active in the activation of the MEK/ERK pathway mediating cell growth and transformation. Further, MST4 kinase activity is stimulated significantly by epidermal growth factor receptor (EGFR) ligands, which are known to promote the growth of certain cancer cells. Accordingly, MST4 has a potential role in signal transduction pathways involved in cancer progression. Three alternatively spliced isoforms of MST4 have been isolated, and isoform 3 lacks an exon encoding kinase domain and may function as a dominant-negative regulator of the MST4 kinase.
References & Citations :
1. Qian, Z. et al., 2001, J Biol Chem. 276 :22439-45. 2. Lin, JL. et al., 2001, Oncogene. 20: 6559-6569. 3. Sung V, et al., 2003, Cancer research. 63: 3356-63. 4. Ma, X. et al., 2007, Molecular biology of the cell. 18:1965-78. 5. ten Klooster JP, et al., 2009, Developmental cell. 16:551-62.
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