What are the properties of Methionine in supplements?

The properties of Methionine

Methionine (symbol Met or M) is an essential amino acid in humans. As the substrate for other amino acids such as cysteine and taurine, versatile compounds such as SAM-e, and the important antioxidant glutathione, methionine plays a critical role in the metabolism and health of many species, including humans. It is encoded by the codon AUG.

The Food and Nutrition Board of the U.S. Institute of Medicine set Recommended Dietary Allowances (RDAs) for essential amino acids in 2002. For methionine combined with cysteine, for adults 19 years and older, 19 mg/kg body weight/day.

High levels of methionine can be found in eggs, meat, and fish; sesame seeds, Brazil nuts, and some other plant seeds; and cereal grains. Most fruits and vegetables contain very little. Most legumes, though protein dense, are low in methionine. Proteins without adequate methionine are not considered to be complete proteins. For that reason, racemic methionine is sometimes added as an ingredient to pet foods.

Loss of methionine has been linked to senile greying of hair. Its lack leads to a buildup of hydrogen peroxide in hair follicles, a reduction in tyrosinase effectiveness, and a gradual loss of hair color.[39]Methionine raises the intracellular concentration of GSH, thereby promoting antioxidant mediated cell defense and redox regulation. It also protects cells against dopamine induced nigral cell loss by binding oxidative metabolites.

Methionine is an intermediate in the biosynthesis of cysteine, carnitine, taurine, lecithin, phosphatidylcholine, and other phospholipids. Improper conversion of methionine can lead to atherosclerosis due to accumulation of homocysteine.

Methionine might also be essential to reversing damaging methylation of glucocorticoid receptors caused by repeated stress exposures, with implications for depression.


L-Methionine - Description from HMDB

 

L-Methionine and DL-Methionine - Description from ChEBI

 

L-Methionine - Description from NCI Thesaurus

 

L-Methionine and DL-Methionine - Description from DrugBank

 


The supplements containing Methionine


Sports, Pea Protein, Pure Unflavored, 2 lbs (907 g) (Now Foods)Sports, Pea Protein, Pure Unflavored, 2 lbs (907 g) (Now Foods)

English version


Sports, Pea Protein, Pure Unflavored, 2 lbs (907 g) (Now Foods) contains Methionine.

 
Peas are well known for being a source of highly bioavailable protein. Additionally, peas are not considered one of the major dietary allergens. Collectively, this makes pea protein an ideal source of post-workout nutrition for athletes who may have difficulty supplementing with other types of...
Collagen Peptides, Hydrolyzed Protein, Unflavored, 15 Stix, 0.39 oz (11 g) Each (Zhou Nutrition)Collagen Peptides, Hydrolyzed Protein, Unflavored, 15 Stix, 0.39 oz (11 g) Each (Zhou Nutrition)

English version


Collagen Peptides, Hydrolyzed Protein, Unflavored, 15 Stix, 0.39 oz (11 g) Each (Zhou Nutrition) contains Methionine.

 
At Zhou we care about what’s on the surface, and even more about what’s beneath it. Collagen is an essential part of skin, hair, bone and joint health, and our Collagen Peptide powder is an essential part of your wellness lifestyle. Our product is the key to younger looking skin, more luscious...

If you know of any other quality supplement that has not been yet classified by us, please contact us and we will gladly consider adding it to our catalogue.


Methionine - References & External links

Methionine (L-Methionine)

TBS Ingredient ID (TBSI ID):
Name
Methionine
Synonyms:
H-Met-Oh, (S)-2-Amino-4-(Methylthio)Butanoic Acid
Chemical Formula:
C5H11NO2S
Classification TypeIdentifier
PubChem CID:
U.S. National Library of Medicine (PubChem)
InChI Key:
International Chemical Identifier hash (InChIKey) computed from chemical structure using the International Union of Pure and Applied Chemistry (IUPAC) standard
FFEARJCKVFRZRR-BYPYZUCNSA-N
CAS:
A proprietary registry number assigned by the Chemical Abstracts Service (CAS) division of the American Chemical Society (ACS)
63-68-3
NIST:
The National Institute of Standards and Technology (NIST)
ChemIDplus:
United States National Library of Medicine - TOXNET (Toxicology Data Network).
EC Number:
A seven-digit regulatory identifier currently assigned by the European Chemicals Agency (ECHA) known as a European Community (EC) number
200-562-9
ECHA:
European Chemicals Agency.
NSC Number: 760117
RTECS Number: PD0456000
DSSTox Substance ID:
United States Environmental Protection Agency (EPA).
MeSH® ID:
Medical Subject Heading (MeSH)
ChEMBL:
An open data resource of binding, functional and ADMET bioactivity data (ChEMBL)
ChEBI:
Chemical Entities of Biological Interest (ChEBI) - Dictionary of molecular entities focused on "small" chemical compounds. ChEBI is part of the EMBL-European Bioinformatics Institute.

Show: L-Methionine - description from ChEBI
KEGG:
Kyoto Encyclopedia of Genes and Genomes (KEGG)
DrugBank:
The DrugBank database is a unique bioinformatics and cheminformatics resource that combines detailed drug data with comprehensive drug target information.

Show: L-Methionine - description from DrugBank
NCI Thesaurus:
National Cancer Institute - NCI.

Show: L-Methionine - description from NCI Thesaurus
HMDB:
The Human Metabolome Database (HMDB) is a freely available electronic database containing detailed information about small molecule metabolites found in the human body.

Show: L-Methionine - description from HMDB
UNII:
FDA Substance Registration System - Unique Ingredient Identifier

Related substances

DL-Methionine

DL-Methionine

TBS Ingredient ID (TBSI ID):
Name
DL-Methionine
Chemical Formula:
C5H11NO2S or CH3S(CH2)2CH(NH2)COOH
Classification TypeIdentifier
PubChem CID:
U.S. National Library of Medicine (PubChem)
InChI Key:
International Chemical Identifier hash (InChIKey) computed from chemical structure using the International Union of Pure and Applied Chemistry (IUPAC) standard
FFEARJCKVFRZRR-UHFFFAOYSA-N
CAS:
A proprietary registry number assigned by the Chemical Abstracts Service (CAS) division of the American Chemical Society (ACS)
59-51-8
NIST:
The National Institute of Standards and Technology (NIST)
ChemIDplus:
United States National Library of Medicine - TOXNET (Toxicology Data Network).
EC Number:
A seven-digit regulatory identifier currently assigned by the European Chemicals Agency (ECHA) known as a European Community (EC) number
200-432-1
ECHA:
European Chemicals Agency.
ICSC Number:
International Labour Organization (ILO)
NSC Number: 522406
RTECS Number: PD0456000
DSSTox Substance ID:
United States Environmental Protection Agency (EPA).
MeSH® ID:
Medical Subject Heading (MeSH)
ChEMBL:
An open data resource of binding, functional and ADMET bioactivity data (ChEMBL)
ChEBI:
Chemical Entities of Biological Interest (ChEBI) - Dictionary of molecular entities focused on "small" chemical compounds. ChEBI is part of the EMBL-European Bioinformatics Institute.

Show: DL-Methionine - description from ChEBI
KEGG:
Kyoto Encyclopedia of Genes and Genomes (KEGG)
DrugBank:
The DrugBank database is a unique bioinformatics and cheminformatics resource that combines detailed drug data with comprehensive drug target information.

Show: DL-Methionine - description from DrugBank
UNII:
FDA Substance Registration System - Unique Ingredient Identifier


The references to scientific articles about Methionine are not meant to imply that any products treat, cure, or diagnose any disease or human condition. We encourage our audience to do their own research beyond the resources we have provided so your decision is as educated as possible.