Abstract |
Continually expanding evidence has moved inexorably toward establishing key functions for cellular retinol-binding protein (CRBP) in retinoid metabolism. These experimental data integrate into a model of CRBP as a chaperone that protects retinol from the cellular milieu and interacts with certain retinoid-metabolizing enzymes. Mutant mice with an inactivated CRBP gene show decreased liver retinyl ester storage, a shorter elimination half-life of liver retinoids, and predisposition to vitamin A deficiency. No morphologic phenotype was observed until vitamin A was exhausted. Although the mechanisms underlying diminished vitamin A in the CRBP-null mice have not been elucidated, the observations support the model of CRBP as a chaperone of retinoid metabolism.
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Authors | J L Napoli |
Journal | Nutrition reviews
(Nutr Rev)
Vol. 58
Issue 8
Pg. 230-6
(Aug 2000)
ISSN: 0029-6643 [Print] United States |
PMID | 10946560
(Publication Type: Journal Article, Review)
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Chemical References |
- Amino Acids
- Retinoids
- Retinol-Binding Proteins
- Retinol-Binding Proteins, Cellular
- Vitamin A
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Topics |
- Amino Acids
(genetics, metabolism)
- Animals
- Mice
- Mice, Knockout
- Retinoids
(metabolism)
- Retinol-Binding Proteins
(genetics, metabolism)
- Retinol-Binding Proteins, Cellular
- Vitamin A
(metabolism)
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