Abstract
Gcn5-related N-acetyltransferases catalyze the transfer of an acetyl group to a primary amino group of a wide class of substrates. Protonation of the amino group upon binding to the enzyme is necessary to activate the nucleophilic attack on the substrate. The process of glutamate binding to N-acetylglutamate synthase is considered using molecular modeling and quantum chemistry methods. It has been shown that deprotonation of the primary amino group of glutamate occurs upon binding to the active site of the enzyme with the participation of the side chain of the aspartate residue.
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