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Identification
YMDB IDYMDB00347
NameS-Methyl-L-methionine
SpeciesSaccharomyces cerevisiae
StrainBaker's yeast
DescriptionS-Methylmethionine is a derivative of methionine. This cation is an intermediate in many biosynthetic pathways owing to the sulfonium functional group. The natural derivative S-methylmethionine is biosynthesized from L-methionine which is first converted to S-adenosylmethionine. The subsequent conversion, involving replacement of the adenosyl group by a methyl group is catalyzed by the enzyme methionine S-methyltransferase. S-Methylmethionine is particularly abundant in plants, being more abundant than methionine. [Wikipedia]
Structure
Thumb
Synonyms
  • S-Methyl-L-methionine
  • L-Methionine methylsulfonium
  • L-Methionine methylsulphonium
  • S-Methylmethionine
CAS number4727-40-6
WeightAverage: 164.246
Monoisotopic: 164.074524387
InChI KeyYDBYJHTYSHBBAU-YFKPBYRVSA-O
InChIInChI=1S/C6H13NO2S/c1-10(2)4-3-5(7)6(8)9/h5H,3-4,7H2,1-2H3/p+1/t5-/m0/s1
IUPAC Name[(3S)-3-amino-3-carboxypropyl]dimethylsulfanium
Traditional IUPAC NameS-methyl-L-methionine
Chemical FormulaC6H14NO2S
SMILESC[S+](C)CC[C@H](N)C(O)=O
Chemical Taxonomy
Description belongs to the class of organic compounds known as methionine and derivatives. Methionine and derivatives are compounds containing methionine or a derivative thereof resulting from reaction of methionine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentMethionine and derivatives
Alternative Parents
Substituents
  • Methionine or derivatives
  • Alpha-amino acid
  • L-alpha-amino acid
  • Thia fatty acid
  • Fatty acid
  • Fatty acyl
  • Amino acid
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Hydrocarbon derivative
  • Primary amine
  • Organosulfur compound
  • Organooxygen compound
  • Organonitrogen compound
  • Organic nitrogen compound
  • Primary aliphatic amine
  • Organic oxide
  • Carbonyl group
  • Amine
  • Organopnictogen compound
  • Organic oxygen compound
  • Organic cation
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Physical Properties
StateSolid
Charge1
Melting point139 °C
Experimental Properties
PropertyValueReference
Water SolubilityNot AvailablePhysProp
LogPNot AvailablePhysProp
Predicted Properties
PropertyValueSource
Water Solubility8.12 g/LALOGPS
logP-1.3ALOGPS
logP-3.3ChemAxon
logS-1.4ALOGPS
pKa (Strongest Acidic)2.24ChemAxon
pKa (Strongest Basic)9.41ChemAxon
Physiological Charge1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area63.32 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity41.1 m³·mol⁻¹ChemAxon
Polarizability17.56 ųChemAxon
Number of Rings0ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations
  • extracellular
  • cytoplasm
Organoleptic PropertiesNot Available
SMPDB PathwaysNot Available
KEGG PathwaysNot Available
SMPDB ReactionsNot Available
KEGG ReactionsNot Available
Concentrations
Intracellular ConcentrationsNot Available
Extracellular ConcentrationsNot Available
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-03xr-9500000000-a93727c5213fe4bd311dJSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-02t9-0900000000-1c593a8242fb277a76aeJSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0aor-8900000000-586659c7bdf583fdac59JSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-06vi-9100000000-7536d21f47277c6d682fJSpectraViewer
References
References:
  • UniProt Consortium (2011). "Ongoing and future developments at the Universal Protein Resource." Nucleic Acids Res 39:D214-D219.21051339
  • Herrgard, M. J., Swainston, N., Dobson, P., Dunn, W. B., Arga, K. Y., Arvas, M., Bluthgen, N., Borger, S., Costenoble, R., Heinemann, M., Hucka, M., Le Novere, N., Li, P., Liebermeister, W., Mo, M. L., Oliveira, A. P., Petranovic, D., Pettifer, S., Simeonidis, E., Smallbone, K., Spasic, I., Weichart, D., Brent, R., Broomhead, D. S., Westerhoff, H. V., Kirdar, B., Penttila, M., Klipp, E., Palsson, B. O., Sauer, U., Oliver, S. G., Mendes, P., Nielsen, J., Kell, D. B. (2008). "A consensus yeast metabolic network reconstruction obtained from a community approach to systems biology." Nat Biotechnol 26:1155-1160.18846089
Synthesis Reference:Not Available
External Links:
ResourceLink
CHEBI ID17728
HMDB IDNot Available
Pubchem Compound ID145692
Kegg IDC03172
ChemSpider IDNot Available
FOODB IDNot Available
WikipediaS-Methylmethionine
BioCyc IDNot Available

Enzymes

General function:
Involved in homocysteine S-methyltransferase activity
Specific function:
Homocysteine S-methyltransferase involved in the conversion of S-adenosylmethionine (AdoMet) to methionine to control the methionine/AdoMet ratio. Converts also S- methylmethionine (SMM) to methionine
Gene Name:
MHT1
Uniprot ID:
Q12525
Molecular weight:
36714.5
Reactions
S-methyl-L-methionine + L-homocysteine → 2 L-methionine.
General function:
Involved in homocysteine S-methyltransferase activity
Specific function:
Homocysteine S-methyltransferase involved in the conversion of S-adenosylmethionine (AdoMet) to methionine to control the methionine/AdoMet ratio. Converts also S- methylmethionine (SMM) to methionine
Gene Name:
SAM4
Uniprot ID:
Q08985
Molecular weight:
36668.19922
Reactions
S-methyl-L-methionine + L-homocysteine → 2 L-methionine.

Transporters

General function:
Involved in transport
Specific function:
High-affinity S-methylmethionine (SMM) permease, required for utilization of S-methylmethionine as a sulfur source
Gene Name:
MMP1
Uniprot ID:
Q12372
Molecular weight:
64217.0