MiMeDB: Showing metabocard for L-Theanine (MMDBc0000670)

Record Information

Version

1.0

Status

Detected and Quantified

Creation Date

2020-12-10 18:52:22 UTC

Update Date

2022-08-31 06:10:50 UTC

Metabolite ID

MMDBc0000670

Metabolite Identification

Common Name

L-Theanine

Description

L-Theanine, also known as L-gamma-glutamylethylamide or N-gamma-ethyl-L-glutamine, is a member of the class of compounds known as glutamine and derivatives. These compounds contain glutamine or a derivative thereof resulting from a reaction of glutamine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom. L-Theanine is slightly soluble (in water) and a moderately acidic compound (based on its pKa). L-Theanine can be found in saliva. The regulatory status of theanine varies by country. In Japan, L-theanine has been approved for use in all foods, including herb teas, soft drinks, and desserts. Restrictions apply to infant foods. In the United States, the Food and Drug Administration (FDA) considers it to be generally recognized as safe (GRAS) and allows its sale as a dietary supplement. The German Federal Institute for Risk Assessment, an agency of their Federal Ministry of Food and Agriculture, objects to the addition of L-theanine to beverages. The European Food Safety Authority EFSA advised negatively on health claims related to L-theanine and cognitive function, alleviation of psychological stress, maintenance of normal sleep, and reduction of menstrual discomfort. Therefore, health claims for L-theanine are prohibited in the European Union (Wikipedia ). L-Theanine is found in mushrooms and is a constituent of tea (Thea sinensis) and of the fungus Imleria badia. L-Theanine has been shown to exhibit neuroprotectant and neuroprotective functions (PMID: 20416364 , 20416364 ).

Structure

MOL 3D MOL SDF 3D SDF PDB 3D PDB SMILES InChI

HEADER    PROTEIN                                 17-JUL-18   NONE
TITLE     NULL                                                        
COMPND    NULL                                                        
SOURCE    NULL                                                        
KEYWDS    NULL                                                        
EXPDTA    NULL                                                        
AUTHOR    Marvin                                                      
REVDAT   1   17-JUL-18         0                                  
HETATM    1  C   UNK     0      -4.358   2.104   0.000  0.00  0.00           C+0
HETATM    2  C   UNK     0      -3.025   1.334   0.000  0.00  0.00           C+0
HETATM    3  C   UNK     0       2.310   1.334   0.000  0.00  0.00           C+0
HETATM    4  C   UNK     0       0.976   2.104   0.000  0.00  0.00           C+0
HETATM    5  C   UNK     0       3.644   2.104   0.000  0.00  0.00           C+0
HETATM    6  C   UNK     0      -0.357   1.334   0.000  0.00  0.00           C+0
HETATM    7  C   UNK     0       4.977   1.334   0.000  0.00  0.00           C+0
HETATM    8  N   UNK     0       3.644   3.644   0.000  0.00  0.00           N+0
HETATM    9  N   UNK     0      -1.691   2.104   0.000  0.00  0.00           N+0
HETATM   10  O   UNK     0      -0.357  -0.206   0.000  0.00  0.00           O+0
HETATM   11  O   UNK     0       6.311   2.104   0.000  0.00  0.00           O+0
HETATM   12  O   UNK     0       4.977  -0.206   0.000  0.00  0.00           O+0
HETATM   13  H   UNK     0       3.644   0.564   0.000  0.00  0.00           H+0
CONECT    1    2                                                            
CONECT    2    1    9                                                       
CONECT    3    4    5                                                       
CONECT    4    3    6                                                       
CONECT    5    3    7    8   13                                             
CONECT    6    4    9   10                                                  
CONECT    7    5   11   12                                                  
CONECT    8    5                                                            
CONECT    9    2    6                                                       
CONECT   10    6                                                            
CONECT   11    7                                                            
CONECT   12    7                                                            
CONECT   13    5                                                            
MASTER        0    0    0    0    0    0    0    0   13    0   24    0
END

Synonyms

Value	Source
N5-Ethyl-L-glutamine	ChEBI
gamma-Glutamylethylamide	HMDB
Theanine, (D)-isomer	HMDB
L-Glutamic acid-gamma-ethylamide	HMDB
Theanine, (DL)-isomer	HMDB
delta-Glutamylethylamide	HMDB
Theanine, (L)-isomer	HMDB
(+)-Theanine	HMDB
L-gamma-Glutamylethylamide	HMDB
L-Γ-glutamylethylamide	HMDB
N-gamma-Ethyl-L-glutamine	HMDB
N-Γ-ethyl-L-glutamine	HMDB
Nγ-ethyl-L-glutamine	HMDB
Suntheanine	HMDB
Theanin	HMDB
N(5)-Ethyl-L-glutamine	HMDB
Theanine	HMDB
L-Theanine	ChEBI

Molecular Formula

C₇H₁₄N₂O₃

Average Mass

174.1977

Monoisotopic Mass

174.100442324

IUPAC Name

(2S)-2-amino-4-(ethylcarbamoyl)butanoic acid

Traditional Name

theanine

CAS Registry Number

Not Available

SMILES

[H][C@](N)(CCC(O)=NCC)C(O)=O

InChI Identifier

InChI=1S/C7H14N2O3/c1-2-9-6(10)4-3-5(8)7(11)12/h5H,2-4,8H2,1H3,(H,9,10)(H,11,12)/t5-/m0/s1

InChI Key

DATAGRPVKZEWHA-YFKPBYRVSA-N

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as glutamine and derivatives. Glutamine and derivatives are compounds containing glutamine or a derivative thereof resulting from reaction of glutamine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom.

Kingdom

Organic compounds

Super Class

Organic acids and derivatives

Class

Carboxylic acids and derivatives

Sub Class

Amino acids, peptides, and analogues

Direct Parent

Glutamine and derivatives

Alternative Parents

Substituents

Glutamine or derivatives
Alpha-amino acid
L-alpha-amino acid
Fatty amide
N-acyl-amine
Fatty acid
Fatty acyl
Carboxamide group
Secondary carboxylic acid amide
Amino acid
Monocarboxylic acid or derivatives
Carboxylic acid
Organic nitrogen compound
Primary amine
Organooxygen compound
Organonitrogen compound
Organopnictogen compound
Primary aliphatic amine
Organic oxygen compound
Carbonyl group
Organic oxide
Amine
Hydrocarbon derivative
Aliphatic acyclic compound

Molecular Framework

Aliphatic acyclic compounds

External Descriptors

N(5)-alkyl-L-glutamine (CHEBI:17394 )

Functional Ontology

Not Available

Physical Properties

State

Expected Solid

Predicted Properties

Property	Value	Source
Water Solubility	4.25 g/L	ALOGPS
logP	-2.5	ALOGPS
logP	-3.4	ChemAxon
logS	-1.6	ALOGPS
pKa (Strongest Acidic)	2.35	ChemAxon
pKa (Strongest Basic)	9.31	ChemAxon
Physiological Charge	0	ChemAxon
Hydrogen Acceptor Count	4	ChemAxon
Hydrogen Donor Count	3	ChemAxon
Polar Surface Area	92.42 Å²	ChemAxon
Rotatable Bond Count	5	ChemAxon
Refractivity	42.76 m³·mol⁻¹	ChemAxon
Polarizability	17.89 Å³	ChemAxon
Number of Rings	0	ChemAxon
Bioavailability	Yes	ChemAxon
Rule of Five	Yes	ChemAxon
Ghose Filter	No	ChemAxon
Veber's Rule	No	ChemAxon
MDDR-like Rule	No	ChemAxon

Spectra

Chromatographic Retention Times and Retention Indices

Retention Times

Not Available

Retention Indices

Not Available

Chromatographic Retention Times and Retention Indices

Retention Times

Not Available

Retention Indices

Not Available

Biological Properties

Cellular Locations

Cytoplasm
Extracellular

Biospecimen Locations

Feces
Saliva

Tissue Locations

Not Available

Associated OMIM IDs

114500 (Colorectal cancer)
610247 (Eosinophilic esophagitis)

Human Proteins and Enzymes

Protein ID	Protein Name	Protein Type	Uniprot ID	Species

Human Pathways

Pathways

Name	SMPDB/PathBank

Microbial Pathways

Pathways

Not Available

Metabolic Reactions

Reactions

This table shows at most 20 reactions. For the full list of associated reactions:

See All Associated Reactions

Reaction ID	Precursor	Product	Enzyme	Reaction Type	Data Source	Reference

Health Effects and Bioactivity

Health Outcome/Bioactivity	Metabolite Response/Effect	Evidence Type	Host and Biospecimen	Data Source	Reference

Microbial Sources

Superkingdom/Kingdom	Phylum	Total species	Hosts and Body Sites	Microbial Links
Bacteria	Firmicutes	1		Indirect association between microbiota composition and metabolites measured in host biospecimen
Bacteria	Proteobacteria	1

Exposure Sources

Other Exposures

Source Type	Data Source	Reference

Host Biospecimen and Location

Host and Biospecimen	Status	Mean	Std	Min	Max	Units	Age	Sex	Health Condition	Data Source	Reference
Human	Detected and Quantified	0.0499	0.108				Adult (>18 years old)	Both	Normal	HMDB	Sugimoto et al. (2013) Physiological and environmental parameters associated with mass spectrometry-based salivary metabolomic profiles.
Human Feces	Detected but not Quantified						Adult (>18 years old)	Both	Normal	HMDB	29808030

External Links

HMDB ID

HMDB0034365

DrugBank ID

DB12444

Phenol Explorer Compound ID

Not Available

FooDB ID

KNApSAcK ID

Chemspider ID

KEGG Compound ID

BioCyc ID

Not Available

BiGG ID

Not Available

Wikipedia Link

L-theanine

METLIN ID

Not Available

PubChem Compound

439378

PDB ID

Not Available

ChEBI ID

17394

Food Biomarker Ontology

Not Available

CMMC Knowledgebase

Not Available

General References

Di X, Yan J, Zhao Y, Zhang J, Shi Z, Chang Y, Zhao B: L-theanine protects the APP (Swedish mutation) transgenic SH-SY5Y cell against glutamate-induced excitotoxicity via inhibition of the NMDA receptor pathway. Neuroscience. 2010 Jul 14;168(3):778-86. doi: 10.1016/j.neuroscience.2010.04.019. Epub 2010 Apr 21. [PubMed:20416364 ]
Yannai, Shmuel (2004). Yannai, Shmuel. (2004) Dictionary of food compounds with CD-ROM: Additives, flavors, and ingredients. Boca Raton: Chapman & Hall/CRC.. Boca Raton: Chapman & Hall/CRC..

Showing metabocard for L-Theanine (MMDBc0000670)

MOL for #<Metabolite:0x00007f1240746248>

3D MOL for #<Metabolite:0x00007f1240746248>

3D SDF for #<Metabolite:0x00007f1240746248>

3D-SDF for #<Metabolite:0x00007f1240746248>

PDB for #<Metabolite:0x00007f1240746248>

3D PDB for #<Metabolite:0x00007f1240746248>

SMILES for #<Metabolite:0x00007f1240746248>

INCHI for #<Metabolite:0x00007f1240746248>

Structure for #<Metabolite:0x00007f1240746248>

3D Structure for #<Metabolite:0x00007f1240746248>