SQUALENE-2,3-EPOXIDE;
LANOSTEROL;
CYCLASE;
RAT LIVER;
D O I:
暂无
中图分类号:
R914 [药物化学];
学科分类号:
100701 ;
摘要:
Squalene-2,3-epoxide:lanosterol cyclase was purified from rat liver in five steps as a soluble and homogeneous protein. The purified enzyme showed a single band on SDS-polyacrylamide gel electrophoresis with a molecular weight of 75 kD. In its native state it behaved as a homo-dimer. The isoelectric point of 5.5 and the apparent Km value for (3S)-squalene-epoxide of 55-mu-M were estimated for the cyclase.