hri is a protein kinase ( atp : protein phosphotransferase , ec 2.7.1.37 ) that specifically phosphorylates the 38,000-dalton subunit of the met-trna ( f ) ( met ) binding factor ( if ) , which forms a ternary complex with met-trna ( f ) ( met ) and gtp , a finding that suggests that the inhibition by hri involves the phosphorylation of if .
C1539340
hri
C0031715
phosphorylation