Distinct forms of cytochrome P-450 are responsible for 6 beta-hydroxylation of bile acids and of neutral steroids.
Zimniak P, Holsztynska EJ, Radominska A, Iscan M, Lester R, Waxman DJ. Distinct forms of cytochrome P-450 are responsible for 6 beta-hydroxylation of bile acids and of neutral steroids. Biochem J. 1991 Apr 01; 275 ( Pt 1):105-11.