N-Terminal Acetyltransferase B

**Definition:** An N-terminal acetyltransferase subtype that consists of the Naa20p catalytic subunit and the Naa25p auxiliary subunit. The structure of this enzyme is conserved between YEASTS and HUMAN. It has specificity for the N-terminal METHIONINE of peptides where the next amino acid in the chain is either ASPARTATE; GLUTAMATE; ASPARAGINE; or GLUTAMINE.

**Tree numbers:** - D08.811.913.050.134.423.200

**Synonyms:** - N-Terminal Acetyltransferase Type B - NatB N-Terminal Acetyltransferase