. "\"Catalysis of the reaction: N-acetyl-O-acetylneuraminate (free or glycosidically bound) + H2O = N-acetylneuraminate + acetate.\" [EC:3.1.1.53, PMID:1991039]" . . "sialate O-acetylesterase activity" . "N-acetylneuraminate acetyltransferase activity" . "N-acyl-O-acetylneuraminate O-acetylhydrolase activity" . "sialate 9(4)-O-acetylesterase activity" . "EC:3.1.1.53" . "MetaCyc:SIALATE-O-ACETYLESTERASE-RXN" . .