cytochalasin inhibits the increase in conversion of [ 3h ] cholesterol to 20alpha- [ 3h ] dihydroprogesterone ( 20alpha-hydroxypregn-4-en-3-one : a major product of the steroid pathway in y-1 cells ) produced by acth but does not inhibit conversion of cholesterol to pregnenolone by mitochondrial and purified enzyme preparations from y-1 cells and bovine adrenal , respectively .
C0026237
mitochondrial
C0007634
cells