Cytochrome P450 whose physiological substrate is unknown. In vitro, is able to catalyze the selective hydroxylation of mevastatin to pravastatin, the widely used therapeutic agent for hypercholesterolemia. 2 H(+) + mevastatin + O2 + 2 reduced [2Fe-2S]-[ferredoxin] = H2O + 2 oxidized [2Fe-2S]-[ferredoxin] + pravastatin lactone Could be a valuable biocatalyst used in the industrial field for an efficient biotransformation of mevastatin. Belongs to the cytochrome P450 family.