Article · Wikipedia archive · Last revised Jun 22, 2026

RPS6KA2

Ribosomal protein S6 kinase alpha-2 is an enzyme that in humans is encoded by the RPS6KA2 gene.

Last revised
Jun 22, 2026
Read time
≈ 5 min
Length
1,036 w
Citations
15
Source
RPS6KA2
Identifiers
AliasesRPS6KA2, HU-2, MAPKAPK1C, RSK, RSK3, S6K-alpha, S6K-alpha2, p90-RSK3, pp90RSK3, p90RSK2, ribosomal protein S6 kinase A2
External IDsOMIM: 601685; MGI: 1342290; HomoloGene: 100680; GeneCards: RPS6KA2; OMA:RPS6KA2 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_001006932
NM_021135
NM_001318936
NM_001318937
NM_001318938

NM_011299

RefSeq (protein)

NP_001006933
NP_001305865
NP_001305866
NP_001305867
NP_066958

NP_035429

Location (UCSC)Chr 6: 166.41 – 166.91 MbChr 17: 7.44 – 7.57 Mb
PubMed search34
Wikidata
View/Edit HumanView/Edit Mouse

Ribosomal protein S6 kinase alpha-2 is an enzyme that in humans is encoded by the RPS6KA2 gene.56

This gene encodes a member of the RSK (ribosomal S6 kinase) family of serine and threonine kinases. This kinase contains 2 non-identical kinase catalytic domains and phosphorylates various substrates, including members of the mitogen-activated kinase (MAPK) signalling pathway. The activity of this protein has been implicated in controlling cell growth and differentiation. Alternate transcriptional splice variants, encoding different isoforms, have been characterized.6

Interactions

RPS6KA2 has been shown to interact with MAPK378 and MAPK1.78

References

References

  1. GRCh38: Ensembl release 89: ENSG00000071242Ensembl, May 2017
  2. GRCm38: Ensembl release 89: ENSMUSG00000023809Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. Moller DE, Xia CH, Tang W, Zhu AX, Jakubowski M (Apr 1994). "Human rsk isoforms: cloning and characterization of tissue-specific expression". Am J Physiol. 266 (2 Pt 1): C351–9. doi:10.1152/ajpcell.1994.266.2.C351. PMID 8141249.
  6. "Entrez Gene: RPS6KA2 ribosomal protein S6 kinase, 90kDa, polypeptide 2".
  7. Roux PP, Richards Stephanie A, Blenis John (Jul 2003). "Phosphorylation of p90 Ribosomal S6 Kinase (RSK) Regulates Extracellular Signal-Regulated Kinase Docking and RSK Activity". Mol. Cell. Biol. 23 (14). United States: 4796–804. doi:10.1128/MCB.23.14.4796-4804.2003. ISSN 0270-7306. PMC 162206. PMID 12832467.
  8. Zhao Y, Bjorbaek C, Moller D E (Nov 1996). "Regulation and interaction of pp90(rsk) isoforms with mitogen-activated protein kinases". J. Biol. Chem. 271 (47). UNITED STATES: 29773–9. doi:10.1074/jbc.271.47.29773. ISSN 0021-9258. PMID 8939914.
Further reading

Further reading