D-Galacturonic acid
D-Galacturonic acid
Identifiers
CAS number 685-73-4 YesY
PubChem 84740
ChemSpider 76444 YesY
EC number 211-682-6
ChEBI CHEBI:47962 YesY
Jmol-3D images Image 1
Image 2
Properties
Molecular formula C6H10O7
Molar mass 194.139
 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

D-Galacturonic acid is a sugar acid, an oxidized form of D-galactose. It is the main component of pectin, in which it exists as the polymer polygalacturonic acid. It has an aldehyde group at C1 and a carboxylic acid group at C6. Other oxidized forms of D-galactose are D-galactonic acid (carboxylic group at C1) and meso-galactaric acid (mucic acid) (carboxylic groups at C1 and C6). It is also a uronic acid or hexuronic acid. Naturally occurring uronic acids are D-glucuronic acid, D-galacturonic acid, L-iduronic acid and D-mannuronic acid.


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  • d-galacturonic acid — The d isomer is an oxidation product of d galactose, in which the 6 CH2OH group has become a –COOH group; occurs in many natural products ( e.g., pectins) and cell walls. SYN: pectic acid …   Medical dictionary

  • pectic acid — SYN: d galacturonic acid. * * * pectic acid n any of various water insoluble substances formed by hydrolyzing the methyl ester groups of pectins * * * pec·tic ac·id (pekґtik) a complex acid occurring in fruits, containing partially demethylated… …   Medical dictionary

  • Pectin — (from Greek πηκτικός pektikos , congealed, curdled [ [http://www.perseus.tufts.edu/cgi bin/ptext?doc=Perseus%3Atext%3A1999.04.0057%3Aentry%3D%2382916 Pektikos, Henry George Liddell, Robert Scott, A Greek English Lexicon , at Perseus] ] ), a white …   Wikipedia

  • carbohydrate — /kahr boh huy drayt, beuh /, n. any of a class of organic compounds that are polyhydroxy aldehydes or polyhydroxy ketones, or change to such substances on simple chemical transformations, as hydrolysis, oxidation, or reduction, and that form the… …   Universalium

  • UDP-glucuronate 4-epimerase — In enzymology, an UDP glucuronate 4 epimerase (EC number|5.1.3.6) is an enzyme that catalyzes the chemical reaction:UDP glucuronate ightleftharpoons UDP D galacturonateHence, this enzyme has one substrate, UDP glucuronate, and one product, UDP D… …   Wikipedia

  • pectin — 1. Broad generic term for what are now called pectic substances or materials; specifically, a gelatinous substance, consisting largely of long chains of mostly d galacturonic acid units (typically α 1,4 linkages and sometimes present as methyl… …   Medical dictionary

  • C6H10O7 — The molecular formula C6H10O7 may refer to:*D Galacturonic acid *Glucuronic acid *Iduronic acid …   Wikipedia

  • Galacturonokinase — In enzymology, a galacturonokinase (EC number|2.7.1.44) is an enzyme that catalyzes the chemical reaction:ATP + D galacturonate ightleftharpoons ADP + 1 phospho alpha D galacturonateThus, the two substrates of this enzyme are ATP and D… …   Wikipedia

  • pectase — An enzyme that converts pectin to d galacturonic acid (pectic acid); used in the treatment of certain foodstuffs. SYN: pectinesterase. * * * pec·tase pek .tās, .tāz n PECTINESTERASE …   Medical dictionary

  • cell — cell1 cell like, adj. /sel/, n. 1. a small room, as in a convent or prison. 2. any of various small compartments or bounded areas forming part of a whole. 3. a small group acting as a unit within a larger organization: a local cell of the… …   Universalium

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