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In the entry, "phthalyl" is used to mean "2-carboxybenzoyl". The enzyme from Xanthobacter agilis hydrolyses phthalylated amino acids, peptides, beta-lactams, aromatic and aliphatic amines. The substituent on nitrogen may be an alkyl group, but may also be complex, giving an amino acid or peptide derivative. Substitutions on the phthalyl ring include 6-F, 6-NH2, 3-OH, and a nitrogen in the aromatic ring ortho to the carboxy group attached to the amine. No cofactors are required
substrate specificity: hydrolyzes phthalylated amino acids, peptides, beta-lactams, aromatic and aliphatic amines. Substitutions allowed on the phthalyl group include 6-F, 6-NH2, 3-OH, and a nitrogen in the aromatic ring ortho to the carboxyl group
one-step synthesis of the antibiotic loracarbef; selective deprotection of phthalyl protected amines; synthesis of aspartame; the enzyme catalyzes removal of the phthalyl group from a wide variety of phthalyl-containing compounds with improved yields over processes, exhibits stereochemical selectivity, and eliminates the need for harsh conditions to remove the protecting group