Ribosomal Protein S6 Kinase Alpha-3

**Semantic type:** Amino Acid, Peptide, or Protein|Enzyme

**Definition:** Ribosomal protein S6 kinase alpha-3 (740 aa, ~84 kDa) is encoded by the human RPS6KA3 gene. This protein plays a role in the mitogenic and stress-induced phosphorylation of substrates, which regulates cell survival, cell proliferation, transcription and translation.

**Synonyms:** - 90 kDa Ribosomal Protein S6 Kinase 3 - EC 2.7.11.1 - ISPK-1 - Insulin-Stimulated Protein Kinase 1 - MAP Kinase-Activated Protein Kinase 1b - MAPK-Activated Protein Kinase 1b - MAPKAP Kinase 1b - MAPKAPK-1b - MAPKAPK1B - Mitogen-Activated Protein Kinase-Activated Protein Kinase 1b - RPS6KA3 - RSK-2 - Ribosomal Protein S6 Kinase 2 - Ribosomal Protein S6 Kinase A3 - S6K-Alpha 3 - S6K-Alpha-3 - p90-RSK 3 - p90RSK3 - pp90RSK2