Pentalenolactone synthase (EC 1.14.19.8, Formerly EC 1.3.7.10, penM (gene), pntM (gene)) is an enzyme with systematic name pentalenolactone-F:oxidized-ferredoxin oxidoreductase (pentalenolactone forming).
[1] This enzyme catalyse the following chemical reaction This is heme-thiolate protein (P-450), which is isolated from the bacteria Streptomyces exfoliatus and Streptomyces arenae.