Anti-RPS6KA4 antibody produced in rabbit

Prestige Antibodies® Powered by Atlas Antibodies, affinity isolated antibody, buffered aqueous glycerol solution

Anti-Nuclear mitogen- and stress-activated protein kinase 2, Anti-Ribosomal protein kinase B, Anti-RSKB, Anti-90 kDa ribosomal protein S6 kinase 4, Anti-Ribosomal protein S6 kinase alpha-4
Human Protein Atlas Number:

biological source


Quality Level

antibody form

affinity isolated antibody

antibody product type

primary antibodies



product line

Prestige Antibodies® Powered by Atlas Antibodies


buffered aqueous glycerol solution

species reactivity



antibody small pack of 25 μL


immunoblotting: 0.04-0.4 μg/mL
immunofluorescence: 0.25-2 μg/mL
immunohistochemistry: 1:20-1:50

immunogen sequence




UniProt accession no.

shipped in

wet ice

storage temp.


Gene Information

human ... RPS6KA4(8986)

General description

The gene RPS6KA4 (ribosomal protein S6 kinase A4) is mapped to human chromosome 11q. The protein is present in the nucleus. It is a downstream-activated protein of the ERK (extracellular signal-regulated kinase)- and p38-mitogen activated protein kinase (MAPK) signaling pathways.


Ribosomal protein S6 kinase alpha-4 recombinant protein epitope signature tag (PrEST)

Biochem/physiol Actions

RPS6KA4 (ribosomal protein S6 kinase A4) participates in cell survival, proliferation as well as differentiation. It also plays an important role in tumor formation. RPS6KA4 is responsible for the nucleosomal response by phosphorylation of the histone H3 and HMGN1 (high mobility group nucleosome binding domain 1). It is involved in CREB (cAMP responsive element binding protein) activation. It is also responsible for the UV-mediated phosphorylation of p65, which enhances nuclear factor κB activity in MDA-MB-231 (human breast adenocarcinoma) cells.

Features and Benefits

Prestige Antibodies® are highly characterized and extensively validated antibodies with the added benefit of all available characterization data for each target being accessible via the Human Protein Atlas portal linked just below the product name at the top of this page. The uniqueness and low cross-reactivity of the Prestige Antibodies® to other proteins are due to a thorough selection of antigen regions, affinity purification, and stringent selection. Prestige antigen controls are available for every corresponding Prestige Antibody and can be found in the linkage section.

Every Prestige Antibody is tested in the following ways:
  • IHC tissue array of 44 normal human tissues and 20 of the most common cancer type tissues.
  • Protein array of 364 human recombinant protein fragments.


Corresponding Antigen APREST73522.

Physical form

Solution in phosphate-buffered saline, pH 7.2, containing 40% glycerol and 0.02% sodium azide

Legal Information

Prestige Antibodies is a registered trademark of Sigma-Aldrich Co. LLC


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.


NONH for all modes of transport

WGK Germany


Flash Point F

Not applicable

Flash Point C

Not applicable

Certificado de Análisis

Certificado de origen

Kellie A Jacks et al.
The Journal of biological chemistry, 285(3), 1661-1670 (2009-11-26)
Mitogen- and stress-activated protein kinases, MSK1 and the closely related isoform MSK2, are nuclear kinases that are activated following mitogen stimulation or cellular stress, including UV radiation, by the ERK1/2 and p38 MAPK signaling cascades, respectively. However, factors that differentially...
Ji Un Kang et al.
International journal of molecular medicine, 29(1), 81-87 (2011-10-14)
The lymph node metastatic (LNM) spread of tumor cells is a frequent event in the initial process of cancer dissemination and is a powerful independent prognostic indicator in gastric adenocarcinoma (GAC). High density genomic arrays were conducted to identify molecular...
B Pierrat et al.
The Journal of biological chemistry, 273(45), 29661-29671 (1998-10-29)
A novel ribosomal S6 kinase (RSK) family member, RSK-B, was identified in a p38alphaMAPK-baited intracellular interaction screen. RSK-B presents two catalytic domains typical for the RSK family. The protein kinase C-like N-terminal and the calcium/calmodulin kinase-like C-terminal domains both contain...

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