Answers are grounded in this paper and cite their sources.
Cytochrome b 5 purified from neonatal pig testis and that from pig liver stimulated C 21 steroid side-chain cleavage (progesterone → androstenedione) catalyzed in vitro by purified cytochrome P-450 from neonatal pig testicular microsomes. Km of testicular cytochrome b 5 for the P-450 is 6.3–9.1 × 10 −8 M and the ability of b 5 to stimulate C 21 side-chain cleavage is different for cytochromes b 5 prepared from different sources.
No takes yet. Share an insight, caveat, or question.
Onoda et al. (1982) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: