Nocardicin-A epimerase (EC 5.1.1.14) is an enzyme that catalyzes two related chemical reactions in the biosynthetic sequence to nocardicin A in Nocardia uniformis. Its effect is to invert the stereochemistry of the amino acid sidechain in the substrate, isonocardicin C, to give its epimer, nocardicin C.
The enzyme can alternatively form the eimer of an oxime derivative of isonocardicin C (isonocardicin A), which produces nocardicin A.
This enzyme belongs to the family of isomerases, specifically those racemases and epimerases acting on amino acids and derivatives. The systematic name of this enzyme class is nocardicin-A epimerase. This enzyme is also called isonocardicin A epimerase.
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