isopenicillin N + phenylacetyl-CoA + H2O = penicillin G + L-2-aminoadipate + CoA + H(+)
isopenicillin n + phenylacetyl-coa + h2o = penicillin g + l-2-aminoadipate + coa + h(+)
"acyl-coenzyme A:isopenicillin N acyltransferase"
"acyl-coenzyme a:isopenicillin n acyltransferase"