CHEBI:18237 - glutamic acid

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ChEBI Name glutamic acid
ChEBI ID CHEBI:18237
Definition An α-amino acid that is glutaric acid bearing a single amino substituent at position 2.
Stars This entity has been manually annotated by the ChEBI Team.
Secondary ChEBI IDs CHEBI:24314, CHEBI:5431
Supplier Information ChemicalBook:CB5116317, eMolecules:498263
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Glutamic acid (symbol Glu or E; known as glutamate in its anionic form) is an α-amino acid that is used by almost all living beings in the biosynthesis of proteins. It is a non-essential nutrient for humans, meaning that the human body can synthesize enough for its use. It is also the most abundant excitatory neurotransmitter in the vertebrate nervous system. It serves as the precursor for the synthesis of the inhibitory gamma-aminobutyric acid (GABA) in GABAergic neurons. Its molecular formula is C5H9NO4. Glutamic acid exists in two optically isomeric forms; the dextrorotatory L-form is usually obtained by hydrolysis of gluten or from the waste waters of beet-sugar manufacture or by fermentation. Its molecular structure could be idealized as HOOC−CH(NH2)−(CH2)2−COOH, with two carboxyl groups −COOH and one amino group −NH2. However, in the solid state and mildly acidic water solutions, the molecule assumes an electrically neutral zwitterion structure −OOC−CH(NH+3)−(CH2)2−COOH. It is encoded by the codons GAA or GAG. The acid can lose one proton from its second carboxyl group to form the conjugate base, the singly-negative anion glutamate −OOC−CH(NH+3)−(CH2)2−COO−. This form of the compound is prevalent in neutral solutions. The glutamate neurotransmitter plays the principal role in neural activation. This anion creates the savory umami flavor of foods and is found in glutamate flavorings such as monosodium glutamate (MSG). In Europe, it is classified as food additive E620. In highly alkaline solutions the doubly negative anion −OOC−CH(NH2)−(CH2)2−COO− prevails. The radical corresponding to glutamate is called glutamyl. The one-letter symbol E for glutamate was assigned as the letter following D for aspartate, as glutamate is larger by one methylene –CH2– group.
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Formula C5H9NO4
Net Charge 0
Average Mass 147.12930
Monoisotopic Mass 147.05316
InChI InChI=1S/C5H9NO4/c6-3(5(9)10)1-2-4(7)8/h3H,1-2,6H2,(H,7,8)(H,9,10)
InChIKey WHUUTDBJXJRKMK-UHFFFAOYSA-N
SMILES NC(CCC(O)=O)C(O)=O
Metabolite of Species Details
Mus musculus (NCBI:txid10090) Source: BioModels - MODEL1507180067 See: PubMed
Daphnia magna (NCBI:txid35525) See: Mixtures of similarly acting compounds in Daphnia magna: From gene to metabolite and beyondTine Vandenbrouck, Oliver A.H. Jones, Nathalie Dom, Julian L. Griffin, Wim De CoenEnvironment International 36 (2010) 254-268
Roles Classification
Chemical Role(s): Bronsted base
A molecular entity capable of accepting a hydron from a donor (Bronsted acid).
(via organic amino compound )
Bronsted acid
A molecular entity capable of donating a hydron to an acceptor (Bronsted base).
(via oxoacid )
Biological Role(s): fundamental metabolite
Any metabolite produced by all living cells.
View more via ChEBI Ontology
ChEBI Ontology
Outgoing glutamic acid (CHEBI:18237) has part 2-carboxyethyl group (CHEBI:50329)
glutamic acid (CHEBI:18237) has role fundamental metabolite (CHEBI:78675)
glutamic acid (CHEBI:18237) is a α-amino acid (CHEBI:33704)
glutamic acid (CHEBI:18237) is a polar amino acid (CHEBI:26167)
glutamic acid (CHEBI:18237) is conjugate acid of glutamate(1−) (CHEBI:14321)
Incoming γ-Glu-Leu (CHEBI:68433) has functional parent glutamic acid (CHEBI:18237)
γ-glutamyl-Se-methylselenocysteine (CHEBI:28776) has functional parent glutamic acid (CHEBI:18237)
γ-glutamylphenylalanine (CHEBI:82966) has functional parent glutamic acid (CHEBI:18237)
γ-glutamylthreonine (CHEBI:82968) has functional parent glutamic acid (CHEBI:18237)
γGluCys(IAN)Glu (CHEBI:64978) has functional parent glutamic acid (CHEBI:18237)
glutamic acid derivative (CHEBI:24315) has functional parent glutamic acid (CHEBI:18237)
D-glutamic acid (CHEBI:15966) is a glutamic acid (CHEBI:18237)
L-glutamic acid (CHEBI:16015) is a glutamic acid (CHEBI:18237)
glutamate(1−) (CHEBI:14321) is conjugate base of glutamic acid (CHEBI:18237)
α-glutamyl group (CHEBI:22453) is substituent group from glutamic acid (CHEBI:18237)
γ-glutamyl group (CHEBI:24190) is substituent group from glutamic acid (CHEBI:18237)
glutamic acid residue (CHEBI:32483) is substituent group from glutamic acid (CHEBI:18237)
glutamo group (CHEBI:24321) is substituent group from glutamic acid (CHEBI:18237)
glutamoyl group (CHEBI:24322) is substituent group from glutamic acid (CHEBI:18237)
IUPAC Names
2-aminopentanedioic acid
glutamic acid
Synonyms Sources
2-Aminoglutaric acid KEGG COMPOUND
DL-Glutamic acid KEGG DRUG
DL-Glutaminic acid KEGG COMPOUND
E ChEBI
Glu ChEBI
Glutamate KEGG COMPOUND
Glutamic acid KEGG COMPOUND
Glutaminic acid KEGG COMPOUND
Glutaminsäure ChEBI
Manual Xrefs Databases
C00001358 KNApSAcK
C00019577 KNApSAcK
C00302 KEGG COMPOUND
D04341 KEGG DRUG
Glutamic_acid Wikipedia
View more database links
Registry Numbers Types Sources
101971 Gmelin Registry Number Gmelin
1723799 Reaxys Registry Number Reaxys
617-65-2 CAS Registry Number ChemIDplus
617-65-2 CAS Registry Number NIST Chemistry WebBook
Citations Waiting for Citations
Last Modified
18 April 2024