Alcohol dehydrogenase class 4 mu/sigma chain is an enzyme that in humans is encoded by the ADH7 gene. [5] [6]
This gene encodes class IV alcohol dehydrogenase 7 mu or sigma subunit, which is a member of the alcohol dehydrogenase family. Members of this family metabolize a wide variety of substrates, including ethanol, retinol, other aliphatic alcohols, hydroxysteroids, and lipid peroxidation products. The enzyme encoded by this gene is inefficient in ethanol oxidation, but is the most active as a retinol dehydrogenase; thus it may participate in the synthesis of retinoic acid, a hormone important for cellular differentiation. The expression of this gene makes it much more abundant in the stomach than the liver, thus it differs from the other known gene family members. [6]
Alcohol dehydrogenases (ADH) (EC 1.1.1.1) are a group of dehydrogenase enzymes that occur in many organisms and facilitate the interconversion between alcohols and aldehydes or ketones with the reduction of nicotinamide adenine dinucleotide (NAD+) to NADH. In humans and many other animals, they serve to break down alcohols that otherwise are toxic, and they also participate in generation of useful aldehyde, ketone, or alcohol groups during biosynthesis of various metabolites. In yeast, plants, and many bacteria, some alcohol dehydrogenases catalyze the opposite reaction as part of fermentation to ensure a constant supply of NAD+.
In enzymology, a retinol dehydrogenase (RDH) (EC 1.1.1.105) is an enzyme that catalyzes the chemical reaction
In enzymology, a formaldehyde dehydrogenase (EC 1.2.1.46) is an enzyme that catalyzes the chemical reaction
Alcohol dehydrogenase 1B is an enzyme that in humans is encoded by the ADH1B gene.
Alcohol dehydrogenase 1C is an enzyme that in humans is encoded by the ADH1C gene.
Aldehyde dehydrogenase, dimeric NADP-preferring is an enzyme that in humans is encoded by the ALDH3A1 gene.
11-cis retinol dehydrogenase is an enzyme that in humans is encoded by the RDH5 gene.
Alcohol dehydrogenase class-3 is an enzyme that in humans is encoded by the ADH5 gene.
Alcohol dehydrogenase 4 is an enzyme that in humans is encoded by the ADH4 gene.
Alcohol dehydrogenase 1A is an enzyme that in humans is encoded by the ADH1A gene.
Retinol dehydrogenase 11 is an enzyme that in humans is encoded by the RDH11 gene.
Retinol dehydrogenase 12 is an enzyme that in humans is encoded by the RDH12 gene.
Retinol dehydrogenase 14 is an enzyme that in humans is encoded by the RDH14 gene.
Short-chain dehydrogenase/reductase 3 is an enzyme that in humans is encoded by the DHRS3 gene.
Dehydrogenase/reductase SDR family member 9 is an enzyme that in humans is encoded by the DHRS9 gene.
Alcohol dehydrogenase 6 is an enzyme that in humans is encoded by the ADH6 gene.
Hydroxysteroid 17-beta dehydrogenase 6 is an enzyme that in humans is encoded by the HSD17B6 gene.
Retinol dehydrogenase 8 is an enzyme that in humans is encoded by the RDH8 gene.
Aldehyde dehydrogenase 1 family, member A3, also known as ALDH1A3 or retinaldehyde dehydrogenase 3 (RALDH3), is an enzyme that in humans is encoded by the ALDH1A3 gene,
Retinol dehydrogenase 13 (all-trans/9-cis) is a protein that in humans is encoded by the RDH13 gene. This gene encodes a mitochondrial short-chain dehydrogenase/reductase, which catalyzes the reduction and oxidation of retinoids. The encoded enzyme may function in retinoic acid production and may also protect the mitochondria against oxidative stress. Alternatively spliced transcript variants have been described.