A subject of the invention is a modified yeast strain in which the acetyl-CoA pregnenolone acetyltransferase (APAT) activity is eliminated by altering the gene coding for this activity with resultant stabilization of 3&bgr;-hydroxysteroids.
本发明的一个主题是一种改良酵母菌株,通过改变编码乙酰-CoA
孕烯醇酮乙酰转移酶(APAT)活性的
基因,消除了该活性,从而稳定了3&bgr;-羟基类
固醇。