M phase of mitotic cell cycle, mitotic cell cycle, M phase, nuclear division, protein amino acid phosphorylation,phosphorus metabolic process, phosphate metabolic process, cell cycle, mitosis, phosphorylation, cell cycle process,cell cycle phase, organelle fission, cell division,
Cytoplasm . Nucleus .
Most abundant in heart, liver, kidney and testis. Also expressed in smooth muscle cells and fibroblasts.