N-terminal L-glutamyl-[protein] + NH4(+) => N-terminal L-glutaminyl-[protein] + H2O
n-terminal l-glutamyl-[protein] + nh4(+) => n-terminal l-glutaminyl-[protein] + h2o
N-terminal L-glutamyl-[protein] + NH4(+) => N-terminal L-glutaminyl-[protein] + H2O
n-terminal l-glutamyl-[protein] + nh4(+) => n-terminal l-glutaminyl-[protein] + h2o