Purity > 85% as determined by SDS-PAGE. MW: 15.3kDa. Full Length of Mature Protein: 59-186aa. N-terminal 6xHis-tagged. Bos taurus (Bovine). Essential for the synthesis of various steroid hormones. Participates in the reduction of mitochondrial cytochrome P450 for steroidogenesis. Transfers electrons from adrenodoxin reductase to CYP11A1, a cytochrome P450 that catalyzes cholesterol side-chain cleavage to produce pregnenolone, the precursor of most steroid hormones. Does not form a ternary complex with adrenodoxin reductase and CYP11A1 but shuttles between the two enzymes to transfer electrons.