MSK1, active, GST tagged human

PRECISIO® Kinase, recombinant, expressed in baculovirus infected Sf9 cells, ≥70% (SDS-PAGE), buffered aqueous glycerol solution


Quality Level


expressed in baculovirus infected Sf9 cells

product line



≥70% (SDS-PAGE)


buffered aqueous glycerol solution

specific activity

75-103 nmol/min·mg

mol wt

~120 kDa

UniProt accession no.

shipped in

dry ice

storage temp.


Gene Information

human ... RPS6KA5(9252)

Biochem/physiol Actions

MSK1 or mitogen- and stress-activated protein kinase-1 contains 2 protein kinase domains and shares 43% protein sequence identity with the MAPKAPK1 isoforms. Northern blot analysis shows that MSK1 is expressed in all tissues with the highest level of expression in brain, muscle, and placenta. Immunoelectron microscopy localized MSK1 to the nucleus. MSK1 is activated in vitro and in vivo by either ERK or SAPK2 proteins. MSK1 rather than MAPKAP-K1 or MAPKAP-K2/K3, mediates activation of the cAMP response element-binding protein and activating transcription factor-1 by either growth factors or stress signals. By radiation hybrid analysis, the RPS6KA5 gene has been mapped to chromosome 14q31-q32.

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 Sigma-Aldrich Co. LLC


10 - Combustible liquids

WGK Germany


Flash Point F

Not applicable

Flash Point C

Not applicable

Certificado de Análisis

Certificado de origen

Assignment of a member of the ribosomal protein S6 kinase family, RPS6KA5, to human chromosome 14q31-->q32.1 by radiation hybrid mapping.
C Jiang et al.
Cytogenetics and cell genetics, 87(3-4), 261-262 (2000-03-07)
M Deak et al.
The EMBO journal, 17(15), 4426-4441 (1998-08-04)
We have identified a novel mitogen- and stress-activated protein kinase (MSK1) that contains two protein kinase domains in a single polypeptide. MSK1 is activated in vitro by MAPK2/ERK2 or SAPK2/p38. Endogenous MSK1 is activated in 293 cells by either growth...

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