Aldehydes
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  Aldehydes



Aldehydes

   Organic compounds containing a carbonyl group in the form -CHO.

RELATED TERMS
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Organic
Of or related to a substance that contains carbon atoms linked together by carbon-carbon bonds. All living matter is organic. The original definition of the term organic related to the source of chemical compounds, with organic compounds being those carbon-containing compounds obtained from plant or animal sources, whereas inorganic compounds were obtained from mineral sources. Compounds containing bonds between carbon atoms can now be made in the laboratory and industrially by man.



SIMILAR TERMS
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Aldehyde Dehydrogenase, Semiaspartate
An enzyme that catalyzes the conversion of L-aspartate 4-semialdehyde, orthophosphate, and NADP+ to yield L-4-aspartyl phosphate and NADPH. EC 1.2.1.11.

Aldehyde Reductase
An enzyme that catalyzes reversibly the oxidation of an aldose to an alditol. It possesses broad specificity for many aldoses. EC 1.1.1.21.

Aldehyde, ortho-Phthalic
A reagent that forms fluorescent conjugation products with primary amines. It is used for the detection of many biogenic amines, peptides, and proteins in nanogram quantities in body fluids.

Aldehyde, Vitamin A
A carotenoid constituent of visual pigments. It is the oxidized form of retinol which functions as the active component of the visual cycle. It is bound to the protein opsin forming the complex rhodopsin. When stimulated by visible light, the retinal component of the rhodopsin complex undergoes isomerization at the 11-position of the double bond to the cis-form; this is reversed in ""dark"" reactions to return to the native trans-configuration.

Aldehyde-Ketone Transferases
Enzymes that catalyze the transfer of aldehyde or ketone residues. EC 2.2.

Aldehyde-Lyases
Enzymes that catalyze a reverse aldol condensation. A molecule containing a hydroxyl group and a carbonyl group is cleaved at a C-C bond to produce two smaller molecules (ALDEHYDES or KETONES). EC 4.1.2.

Aldehyde-NAD Oxidoreductase
An enzyme that oxidizes an aldehyde in the presence of NAD+ and water to an acid and NADH. EC 1.2.1.3. Before 1978, it was classified as EC 1.1.1.70.

Alder
A plant genus of the family BETULACEAE that is distinguished from birch (BETULA) by its usually stalked winter buds and by cones that remain on the branches after the small, winged nutlets are released.

Alderney doctor
A doctor who, being or not a citizen of that country, has been admitted to practice medicine in Alderney.



PREVIOUS AND NEXT TERMS
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Alcohols, Sugar
Polyhydric alcohols having no more than one hydroxy group attached to each carbon atom. They are formed by the reduction of the carbonyl group of a sugar to a hydroxyl group.(From Dorland, 28th ed)

Alcohols, Propyl
Isomeric forms and derivatives of PROPANOL (C3H7OH).

Alcohols, Octylic
Isomeric forms and derivatives of octanol (C8H17OH).

Alcohols, Hexyl
Isomeric forms and derivatives of hexanol (C6H11OH).

Alcohols, Fatty
Usually high-molecular-weight, straight-chain primary alcohols, but can also range from as few as 4 carbons, derived from natural fats and oils, including lauryl, stearyl, oleyl, and linoleyl alcohols. They are used in pharmaceuticals, cosmetics, detergents, plastics, and lube oils and in textile manufacture. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)

Aldehydes

Aldehyde-NAD Oxidoreductase
An enzyme that oxidizes an aldehyde in the presence of NAD+ and water to an acid and NADH. EC 1.2.1.3. Before 1978, it was classified as EC 1.1.1.70.

Alder
A plant genus of the family BETULACEAE that is distinguished from birch (BETULA) by its usually stalked winter buds and by cones that remain on the branches after the small, winged nutlets are released.

Aldehyde-Lyases
Enzymes that catalyze a reverse aldol condensation. A molecule containing a hydroxyl group and a carbonyl group is cleaved at a C-C bond to produce two smaller molecules (ALDEHYDES or KETONES). EC 4.1.2.

Aldehyde-Ketone Transferases
Enzymes that catalyze the transfer of aldehyde or ketone residues. EC 2.2.

Aldehyde, Vitamin A
A carotenoid constituent of visual pigments. It is the oxidized form of retinol which functions as the active component of the visual cycle. It is bound to the protein opsin forming the complex rhodopsin. When stimulated by visible light, the retinal component of the rhodopsin complex undergoes isomerization at the 11-position of the double bond to the cis-form; this is reversed in ""dark"" reactions to return to the native trans-configuration.

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