CHEBI:28300 - glutamine

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ChEBI Name glutamine
ChEBI ID CHEBI:28300
Definition An α-amino acid that consists of butyric acid bearing an amino substituent at position 2 and a carbamoyl substituent at position 4.
Stars This entity has been manually annotated by the ChEBI Team.
Secondary ChEBI IDs CHEBI:5432, CHEBI:24316
Supplier Information ChemicalBook:CB8874643, ChemicalBook:CB8381468, eMolecules:27678119
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Glutamine (symbol Gln or Q) is an α-amino acid that is used in the biosynthesis of proteins. Its side chain is similar to that of glutamic acid, except the carboxylic acid group is replaced by an amide. It is classified as a charge-neutral, polar amino acid. It is non-essential and conditionally essential in humans, meaning the body can usually synthesize sufficient amounts of it, but in some instances of stress, the body's demand for glutamine increases, and glutamine must be obtained from the diet. It is encoded by the codons CAA and CAG. It is named after glutamic acid, which in turn is named after its discovery in cereal proteins, gluten. In human blood, glutamine is the most abundant free amino acid. The dietary sources of glutamine include especially the protein-rich foods like beef, chicken, fish, dairy products, eggs, vegetables like beans, beets, cabbage, spinach, carrots, parsley, vegetable juices and also in wheat, papaya, Brussels sprouts, celery, kale and fermented foods like miso. The one-letter symbol Q for glutamine was assigned in alphabetical sequence to N for asparagine, being larger by merely one methylene –CH2– group. Note that P was used for proline, and O was avoided due to similarity with D. The mnemonic Qlutamine was also proposed.
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Formula C5H10N2O3
Net Charge 0
Average Mass 146.14458
Monoisotopic Mass 146.06914
InChI InChI=1S/C5H10N2O3/c6-3(5(9)10)1-2-4(7)8/h3H,1-2,6H2,(H2,7,8)(H,9,10)
InChIKey ZDXPYRJPNDTMRX-UHFFFAOYSA-N
SMILES NC(CCC(N)=O)C(O)=O
Metabolite of Species Details
Daphnia magna (NCBI:txid35525) See: PubMed
Arabidopsis thaliana (NCBI:txid3702) See: PubMed
Homo sapiens (NCBI:txid9606) See: PubMed
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 glutamine (CHEBI:28300) has part 3-amino-3-oxopropyl group (CHEBI:50331)
glutamine (CHEBI:28300) has role fundamental metabolite (CHEBI:78675)
glutamine (CHEBI:28300) is a α-amino acid (CHEBI:33704)
glutamine (CHEBI:28300) is a polar amino acid (CHEBI:26167)
glutamine (CHEBI:28300) is conjugate acid of glutaminate (CHEBI:32678)
glutamine (CHEBI:28300) is conjugate base of glutaminium (CHEBI:32679)
Incoming N2-phenylacetylglutamine (CHEBI:8087) has functional parent glutamine (CHEBI:28300)
glutamine derivative (CHEBI:70813) has functional parent glutamine (CHEBI:28300)
D-glutamine (CHEBI:17061) is a glutamine (CHEBI:28300)
L-glutamine (CHEBI:18050) is a glutamine (CHEBI:28300)
glutaminium (CHEBI:32679) is conjugate acid of glutamine (CHEBI:28300)
glutaminate (CHEBI:32678) is conjugate base of glutamine (CHEBI:28300)
N2-glutamino group (CHEBI:21816) is substituent group from glutamine (CHEBI:28300)
N5-glutamino group (CHEBI:21847) is substituent group from glutamine (CHEBI:28300)
glutamine residue (CHEBI:32677) is substituent group from glutamine (CHEBI:28300)
glutaminyl group (CHEBI:24320) is substituent group from glutamine (CHEBI:28300)
IUPAC Name
glutamine
Synonyms Sources
2,5-diamino-5-oxopentanoic acid IUPAC
2-amino-4-carbamoylbutanoic acid JCBN
2-Aminoglutaramic acid KEGG COMPOUND
glutamic acid γ-amide ChEBI
Glutamin ChEBI
Glutamine KEGG COMPOUND
Glutaminsäure-5-amid ChEBI
Hgln IUPAC
Manual Xrefs Databases
C00001359 KNApSAcK
C00303 KEGG COMPOUND
Glutamine Wikipedia
View more database links
Registry Numbers Types Sources
1723795 Reaxys Registry Number Reaxys
27318 Gmelin Registry Number Gmelin
585-21-7 CAS Registry Number ChemIDplus
6899-04-3 CAS Registry Number ChemIDplus
Last Modified
06 July 2021