Imino acid

Imino acid

In chemistry, an imino acid is any molecule that contains both imino (>C=NH) and carboxyl (-C(=O)-OH) functional groups.

Imino acids are related to amino acids, which contain both amino (-NH2) and carboxyl (-COOH) functional groups. Amino acids containing a secondary amine group (the only proteinogenic amino acid of this type is proline) are sometimes named imino acids [MeshName|Proline] [http://opbs.okstate.edu/5753/Amino%20Acids.html] , though this usage is disputed by some.

The term imino acid is also the obsolete term for imido acids, containing the -C(=NH)-OH group, and should not be used for them.

The amino acid oxidase enzymes are able to convert amino acids into imino acids. Also the direct biosynthetical precursor to the amino acid proline is the imino acid ("S")-Δ1-pyrroline-5-carboxylate (P5C).

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Look at other dictionaries:

  • imino acid — n an acid that contains an imino group * * * im·i·no ac·id (imґĭ no) an organic acid containing the bivalent group NH, such as proline or hydroxyproline …   Medical dictionary

  • imino acid — imidorūgštis statusas T sritis chemija formulė RC(=NH)OH atitikmenys: angl. imido acid; imino acid rus. имидокислота; иминокислота …   Chemijos terminų aiškinamasis žodynas

  • imino acid — noun Any carboxylic acid having an imino substituent …   Wiktionary

  • imino group — Chem. the bivalent group =NH not linked to any acid group. Also called imino radical. Cf. imido group. [1905 10] * * * …   Universalium

  • imino acids — Compounds with molecules containing both an acid group (usually the carboxyl, –COOH) and an imino group (=NH) …   Medical dictionary

  • imino — im•i•no [[t]ˈɪm əˌnoʊ[/t]] adj. chem. containing the bivalent group NH not linked to any acid group • Etymology: 1900–05; independent use of imino = imine+ o …   From formal English to slang

  • imino group — Chem. the bivalent group =NH not linked to any acid group. Also called imino radical. Cf. imido group. [1905 10] …   Useful english dictionary

  • imino — adjective Date: 1901 relating to or containing the NH group or its substituted form NR united to a group other than an acid group …   New Collegiate Dictionary

  • imino — im·i·no im ə .nō adj relating to or containing the NH group or its substituted form NR united to a group other than an acid group …   Medical dictionary

  • imino — ˈiməˌnō adjective Etymology: imin : relating to or containing the group . NH or a substituted group . NR united to a radical other than an acid radical distinguished from imido …   Useful english dictionary

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