Medical Subject Headings

Last uploaded: March 22, 2026
Id http://purl.bioontology.org/ontology/MESH/D012172
http://purl.bioontology.org/ontology/MESH/D012172
Preferred Name

Retinaldehyde

Definitions
A diterpene derived from the carotenoid VITAMIN A which functions as the active component of the visual cycle. It is the prosthetic group of RHODOPSIN (i.e., covalently bonded to ROD OPSIN as 11-cis-retinal). When stimulated by visible light, rhodopsin transforms this cis-isomer of retinal to the trans-isomer (11-trans-retinal). This transformation straightens-out the bend of the retinal molecule and causes a change in the shape of rhodopsin triggering the visual process. A series of energy-requiring enzyme-catalyzed reactions convert the 11-trans-retinal back to the cis-isomer.
Synonyms
3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4,6,8-Nonatetraenal
Vitamin A Aldehyde
all trans Retinal
Retinyl Aldehydde
11 cis Retinal
Axerophthal
Aldehydde, Retinyl
all-trans-Retinal
Retinene
11-trans-Retinal
Retinal
11 trans Retinal
Aldehyde, Vitamin A
11-cis-Retinal
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Type http://www.w3.org/2002/07/owl#Class
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