Unknown

Dataset Information

0

The formation of cholest-5-ene-3 ,26-diol as an intermediate in the conversion of cholesterol into bile acids by liver mitochondria.


ABSTRACT: 1. When [(14)C]cholesterol was incubated with rat liver mitochondria, radioactive 26-hydroxycholesterol, 3beta-hydroxychol-5-enoic acid and other bile acids were isolated from the incubation mixture. 2. In the absence of added 26-hydroxycholesterol, the specific radioactivity of the 26-hydroxycholesterol formed from [(14)C]cholesterol during the incubation was higher than that of the 3beta-hydroxychol-5-enoic acid. Addition of increasing amounts of 26-hydroxycholesterol led to a progressive fall in the specific radioactivity, and to a progressive increase in the mass, of the 3beta-hydroxychol-5-enoic acid recovered at the end of the incubation. 3. It is concluded that 26-hydroxycholesterol is an intermediate in the formation of 3beta-hydroxychol-5-enoic acid from cholesterol. 4. Comparison of the specific radioactivity of the 26-hydroxycholesterol formed in the incubation mixture with that of the added [(14)C]cholesterol indicates that endogenous cholesterol in mitochondria is accessible to cholesterol 26-hydroxylase.

SUBMITTER: Mitropoulos KA 

PROVIDER: S-EPMC1174415 | biostudies-other | 1972 Nov

REPOSITORIES: biostudies-other

Similar Datasets

| S-EPMC1166347 | biostudies-other
| S-EPMC3588934 | biostudies-literature
| S-EPMC3120455 | biostudies-literature
| S-EPMC2960791 | biostudies-literature
| S-EPMC3007388 | biostudies-literature
| S-EPMC3008105 | biostudies-literature
| S-EPMC2979588 | biostudies-literature
| S-EPMC3589044 | biostudies-literature
| S-EPMC9013900 | biostudies-literature
| S-EPMC4489319 | biostudies-literature