to test whether human liver alcohol dehydrogenase ( alcohol : nad+ oxidoreductase , ec 1.1.1.1 ) plays a role in the metabolism of cholesterol in man or not , a major isozyme of human liver alcohol dehydrogenase , beta 2 beta 2 , was purified from homozygous atypical human livers , measuring both liver acetaldehyde reductase activity and that of 3 alpha,7 alpha,12 alpha-trihydroxy-5 beta-cholestan-26-al reductase ( 5 beta-cholestane-3 alpha,7 alpha,12 alpha,26-tetraol : nad+ 26-oxidoreductase , ec 1.1.1.161 ) in the course of purification , and it was found that both enzyme activities were accompanied with each other at any step .
C0001942
alcohol dehydrogenase
C0030016
ec 1