MSK1 (Ribosomal protein S6 kinase alpha-5) is a serine/threonine kinase that is localised in the nucleus. It contains two protein kinase domains in a single polypeptide. It can be activated 5-fold by ERK1/2 through phosphorylation at four key residues.
Lucocq, LM, Alessi, DR, Clifton, AD, Deak, M
protein serine/threonine kinase activity of p-T,Y MAPK dimers [nucleoplasm]
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