※ PHK family introduction

    PHK refers to the catalytic subunit of the phosphorylase b kinase, which mediates the neural and hormonal regulation of glycogen breakdown (glycogenolysis) by phosphorylating and thereby activating glycogen phosphorylase (PYGB, PYGL or PYGM). PHK may regulate glycogeneolysis in the testis. In vitro, phosphorylates TNNI3, TNNT2, MAPT/TAU, GAP43 and NRGN/RC3 (1).

Reference
1. UniProt Annotation:PHKG2_HUMAN