Ribosomal protein S6 kinase alpha-5

It belongs to the AGC Ser/Thr protein kinase family. It is a Mitogen and stress-activated kinase. MSK1 is responsible for the phosphorylation of H2A Serine 1 that mediates transcriptional repression (PMID: 15010469). It is known to phosphorylate and modulate the activity of p65 which is turn controls the expression of NF-kB target genes (PMID: 12628924). H3S10 phosphorylation is observed in human breast carcinomas (PMID: 16651411). Arsenic trioxide induced apoptosis of leukemic cells is regulated by MSK1 through a negative feedback (PMID: 16762916). Msk1 also causes phosphorylation of H3S28 that initiates a methyl-acetyl switch at the neighbouring lysine 27 (methylated by Polycomb repressive complex) subsequently derepressing the target genes (PMID: 21282660, PMID: 20864036).

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Ribosomal protein S6 kinase alpha-5 (S6K-alpha-5) infosheet
UniprotKB AccessionO75582
Alternative Name(s)90 kDa ribosomal protein S6 kinase 5, Nuclear mitogen- and stress-activated protein kinase 1, RSK-like protein kinase (RSKL)
Writer for PTM/s H2AS1ph, H3S10ph, H3S28ph
EC number
No. of coding genesRibosomal protein S6 kinase alpha-5 is coded by following 1 non-allelic gene/s
Gene nameribosomal protein S6 kinase, 90kDa, polypeptide 5
Gene symbolRPS6KA5
Promoter region (-700 TSS +300)Get sequence
Previous Symbol/s
AliasesMSK1, RLPK
Chromosomal location14q31-q32.
RefSeq mRNANM_004755.2NM_182398.1
RefSeq ProteinNP_004746.2NP_872198.1
Disease associationsNo disease associations known for Ribosomal protein S6 kinase alpha-5

Serine/threonine/tyrosine kinases Cyclin-dependent kinase 17, Cyclin-dependent kinase 3, Cyclin-dependent kinase 5, Death-associated protein kinase 3, DNA-dependent protein kinase catalytic subunit, Glycogen synthase kinase-3 beta, Inhibitor of nuclear factor kappa-B kinase subunit alpha, LIM domain kinase 2, Microtubule-associated serine/threonine-protein kinase-like, Mitogen-activated protein kinase kinase kinase 8, Mitogen-activated protein kinase kinase kinase MLT, Mitotic checkpoint serine/threonine-protein kinase BUB1, Protein kinase C beta type, Protein kinase C delta type, Ribosomal protein S6 kinase alpha-4, Ribosomal protein S6 kinase alpha-5, Serine-protein kinase ATM, Serine/threonine-protein kinase 10, Serine/threonine-protein kinase 12, Serine/threonine-protein kinase 4, Serine/threonine-protein kinase ATR, Serine/threonine-protein kinase haspin, Serine/threonine-protein kinase N1, Serine/threonine-protein kinase Nek6, Serine/threonine-protein kinase Nek9, Serine/threonine-protein kinase PAK 2, Serine/threonine-protein kinase tousled-like 1, Tyrosine-protein kinase BAZ1B, Tyrosine-protein kinase JAK2