T1955
TOPK, active, GST tagged human
PRECISIO® Kinase, recombinant, expressed in baculovirus infected Sf9 cells, ≥70% (SDS-PAGE), buffered aqueous glycerol solution
Synonym(s):
FLJ14385, Nori-3, PBK, SPK
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About This Item
UNSPSC Code:
51111800
NACRES:
NA.32
recombinant
expressed in baculovirus infected Sf9 cells
Quality Level
product line
PRECISIO® Kinase
Assay
≥70% (SDS-PAGE)
form
buffered aqueous glycerol solution
specific activity
5-7.5 nmol/min·mg
mol wt
~68 kDa
UniProt accession no.
shipped in
dry ice
storage temp.
−70°C
Gene Information
human ... PBK(55872)
Biochem/physiol Actions
TOPK is a MAPK kinase that phosphorylates p38 MAPK and is activated in a cell-cycle-dependent manner in neuronal progenitor cells in vitro. Expression of TOPK is detected in male germ line progenitor cells, activated T-cells, and a variety of lymphomas and leukemias. In vitro studies have shown that activated TOPK phosphorylated p38MAPK but not JNK or ERK. TOPK activation requires phosphorylation by both the M-phase CDK1/CyclinB kinase complex and another unknown kinase, possibly RafC or RafA. TOPK may play an important role in linking extracellular signals to an intracellular state, possibly allowing extracellular influence on the cell-cycle-related processes of proliferation or differentiation.
Physical form
Supplied in 50 mM Tris-HCl, pH 7.5, with 150 mM NaCl, 0.25 mM DTT, 0.1 mM EGTA, 0.1 mM EDTA, 0.1 mM PMSF, and 25% glycerol.
Legal Information
PRECISIO is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class Code
10 - Combustible liquids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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Suguru Matsumoto et al.
Biochemical and biophysical research communications, 325(3), 997-1004 (2004-11-16)
A MAPKK-like protein kinase TOPK expresses in a wide range of proliferating cells and tissues such as cancer cells and testis. However, details of this kinase are still uncovered. We investigated the intracellular distribution of TOPK and its association with
M Simons-Evelyn et al.
Blood cells, molecules & diseases, 27(5), 825-829 (2002-01-11)
PBK/TOPK is a recently cloned serine/threonine kinase which is phosphorylated during mitosis. Earlier work indicated that this kinase is upregulated in a Burkitt's lymphoma cell line (GA-10). To determine whether PBK/TOPK is upregulated in other mitotically active neoplastic cell lines
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