a positive-stranded RNA virus of prawns, that has been called yellow head virus protease and gill-associated virus 3C-like peptidase. The GAV cysteine protease is predicted to be the key enzyme in the processing of the GAV replicase polyprotein precursors, pp1a and pp1ab. This protease employs a Cys(2968)-His(2879) catalytic dyad.
Jiyao W et al.(2023). "The conserved domain database in 2023.",