Protein kinase that may act as a negative regulator of filamentous growth and flocculation. Appears to have a role in normal cell wall and septum formation and in cell separation. May have antagonistic function in the regulation of beta-glucan distribution between the sites for cell wall and septum assembly. ATP + L-seryl-[protein] = ADP + H(+) + O-phospho-L-seryl-[protein] ATP + L-threonyl-[protein] = ADP + H(+) + O-phospho-L-threonyl-[protein] ATP + L-tyrosyl-[protein] = ADP + H(+) + O-phospho-L-tyrosyl-[protein] Autophosphorylates on all three types of residues. Belongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. Lammer subfamily.