cd05579: STKc_MAST_like (this model, PSSM-Id:173670 is obsolete and has been replaced by 270731)
Catalytic domain of Microtubule-associated serine/threonine kinase-like proteins
Serine/Threonine Kinases (STKs), Microtubule-associated serine/threonine (MAST) kinase subfamily, catalytic (c) domain. STKs catalyze the transfer of the gamma-phosphoryl group from ATP to serine/threonine residues on protein substrates. The MAST kinase subfamily is part of a larger superfamily that includes the catalytic domains of other protein STKs, protein tyrosine kinases, RIO kinases, aminoglycoside phosphotransferase, choline kinase, and phosphoinositide 3-kinase. The MAST kinase subfamily includes MAST kinases, MAST-like (MASTL) kinases, and fungal kinases with similarity to Saccharomyces cerevisiae Rim15 and Schizosaccharomyces pombe cek1. MAST kinases contain an N-terminal domain of unknown function, a central catalytic domain, and a C-terminal PDZ domain that mediates protein-protein interactions. MASTL kinases carry only a catalytic domain which contains a long insert relative to other kinases. The fungal kinases in this subfamily harbor other domains in addition to a central catalytic domain, which also contains an insert relative to MAST kinases like MASTL. Rim15 contains a C-terminal signal receiver (REC) domain while cek1 contains an N-terminal PAS domain. MAST kinases are cytoskeletal associated kinases of unknown function that are also expressed at neuromuscular junctions and postsynaptic densities. The fungal proteins Rim15 and cek1 are involved in the regulation of meiosis and mitosis, respectively.