Peptide sequence: LRQKGSVHHD YRGILYRLLG DSKMSFEDIK ANVTEMLAGG VDTTSMTLQW Sequence homology: Human: 100%. CYP11A1, also known as cytochrome P450C11A1, cytochrome P450scc and cytochrome P450, subfamily XIA, is an enzyme that catalyzes the first step of ste