Reference

Search for REF=[4471].

4471
Luengo, J. M., López-Nieto, M. J. and Salto, F.
Cyclization of phenylacetyl-L-cysteinyl-D-valine to benzylpenicillin using cell-free extracts of Streptomyces clavuligerus.
J. Antibiot. 39: 1144-1147, 1986.
PMID: 3759664.
DOI: 10.7164/antibiotics.39.1144.