. "Catalysis of the reaction: protein L-glutamine + H2O = protein L-glutamate + NH3." . . "protein-glutamine glutaminase activity" . "destabilase activity" . "glutaminyl-peptide glutaminase activity" . "glutaminylpeptide glutaminase activity" . "peptidoglutaminase II activity" . "peptidylglutaminase II" . "protein-L-glutamine amidohydrolase activity" . . .