- Molecular cloning and expression in different microbes of the DNA encoding Pseudomonas putida U phenylacetyl-CoA ligase. Use of this gene to improve the rate of benzylpenicillin biosynthesis in Penicillium chrysogenum. Miñambres, B., Martínez-Blanco, H., Olivera, E.R., García, B., Díez, B., Barredo, J.L., Moreno, M.A., Schleissner, C., Salto, F., Luengo, J.M. J. Biol. Chem. (1996)