Vitamin A

From Citizendium
Revision as of 15:20, 28 October 2009 by imported>David E. Volk (New page: {{subpages}} {{Image|Retinol and related.png|right|350px|Retinol (Vitamin A) and related compounds.}} '''Vitamin A''', or '''retinol''', is the immediate precursor of two important bioche...)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search
This article is developing and not approved.
 Main Article
 Discussion
Related Articles  [?]
Bibliography  [?]
External Links  [?]
Citable Version  [?]
 
https://en.citizendium.org/wiki/index.php?title=Vitamin_A&printable=yes
This editable Main Article is under development and subject to a disclaimer.
© Image: David E. Volk
Retinol (Vitamin A) and related compounds.

Vitamin A, or retinol, is the immediate precursor of two important biochemicals, retinal and retinoic acid. Ultimately, retinol is derived biochemically from carotenes such as-carotene, but is not derived from similar carotenoids such as lutein or zeaxanthin. Retinal plays a critical role in vision, while retinoic acid is an intracellular messenger chemical that affects gene transcription. Although plants do not produce retinol, they do produce carotenes which can be converted to retinol in the gastrointestinal tract.

{{Image|Beta-carotene.png|center|500px|Retinol (Vitamin A) and related compounds.

Retrieved from "https://citizendium.org/wiki/index.php?title=Vitamin_A&oldid=702015"