Is an ortholog of human RPS6KA1 (ribosomal protein S6 kinase A1)\; RPS6KA2 (ribosomal protein S6 kinase A2)\; and RPS6KA3 (ribosomal protein S6 kinase A3). Is predicted to have ribosomal protein S6 kinase activity. Human ortholog(s) of this gene are implicated in Coffin-Lowry syndrome and non-syndromic X-linked intellectual disability.