title: Influence of oxygen substituents at the C-11, -17, -20, and -21 positions on the extent of 6beta-hydroxylation of steroids by the mold Rhizopus arrhizus.
mesh_terms: D000735:Androstenedione; D007700:Kinetics; D009904:Optical Rotation; D011282:Pregnenediones; D012233:Rhizopus / Q000378:metabolism*; D013053:Spectrophotometry; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013250:Steroid Hydroxylases / Q000378:metabolism*; D013256:Steroids / Q000378:metabolism*; D013329:Structure-Activity Relationship
chemical_list: D011282:Pregnenediones; D013256:Steroids; D000735:Androstenedione; D013250:Steroid Hydroxylases