Record Information
Version1.0
Creation Date2016-09-30 22:49:48 UTC
Update Date2020-06-04 20:05:59 UTC
BMDB IDBMDB0002005
Secondary Accession Numbers
  • BMDB02005
Metabolite Identification
Common NameMethionine sulfoxide
DescriptionMethionine sulfoxide, also known as met-so or S-oxide-methionine, belongs to the class of organic compounds known as alpha amino acids. These are amino acids in which the amino group is attached to the carbon atom immediately adjacent to the carboxylate group (alpha carbon). Methionine sulfoxide exists as a solid, possibly soluble (in water), and a very strong basic compound (based on its pKa) molecule. Methionine sulfoxide exists in all living species, ranging from bacteria to humans.
Structure
Thumb
Synonyms
ValueSource
L-Methionine sulfoxideChEBI
Methionine S-oxideChEBI
L-Methionine sulphoxideGenerator
Methionine sulphoxideGenerator
Methionine sulfoxide, (R-(r*,s*))-isomerHMDB
Methionine sulfoxide, 35S-labeled, (+-)-isomerHMDB
Methionine sulfoxide, (S-(r*,s*))-isomerHMDB
Methionine sulfoxide, (2S)-isomerHMDB
Methionine sulfoxide, (2R)-isomerHMDB
Methionine sulfoxide, (+-)-isomerHMDB
DL-Methionine sulfoxideHMDB
L-Methionine S-oxideHMDB
Methionine sulfoxideHMDB
Chemical FormulaC5H11NO3S
Average Molecular Weight165.21
Monoisotopic Molecular Weight165.045964392
IUPAC Name(2S)-2-amino-4-methanesulfinylbutanoic acid
Traditional NameL-methionine sulfoxide
CAS Registry Number62697-73-8
SMILES
CS(=O)CC[C@H](N)C(O)=O
InChI Identifier
InChI=1S/C5H11NO3S/c1-10(9)3-2-4(6)5(7)8/h4H,2-3,6H2,1H3,(H,7,8)/t4-,10?/m0/s1
InChI KeyQEFRNWWLZKMPFJ-YGVKFDHGSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as l-alpha-amino acids. These are alpha amino acids which have the L-configuration of the alpha-carbon atom.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentL-alpha-amino acids
Alternative Parents
Substituents
  • L-alpha-amino acid
  • Thia fatty acid
  • Fatty acid
  • Fatty acyl
  • Sulfoxide
  • Amino acid
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Sulfinyl compound
  • Carbonyl group
  • Organic oxygen compound
  • Organic nitrogen compound
  • Primary amine
  • Organosulfur compound
  • Organooxygen compound
  • Organonitrogen compound
  • Amine
  • Primary aliphatic amine
  • Organopnictogen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
StatusDetected and Quantified
Origin
  • Endogenous
BiofunctionNot Available
ApplicationNot Available
Cellular locations
  • Cytoplasm
  • Mitochondria
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting Point232 - 234 °CNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP-2.4ALOGPS
logP-4.6ChemAxon
logS-0.49ALOGPS
pKa (Strongest Acidic)1.74ChemAxon
pKa (Strongest Basic)9.11ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area80.39 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity39.34 m³·mol⁻¹ChemAxon
Polarizability15.98 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash Key
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized)splash10-004i-0900000000-6639ef576db5a01f8ee5View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized)splash10-004i-0910000000-4231d540eda02eebe871View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized)splash10-004i-0900000000-f0849e8acf9a3e1e2763View in MoNA
GC-MSGC-MS Spectrum - GC-MS (3 TMS)splash10-004i-1910000000-b7a64800b9e577e219d4View in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-004i-1910000000-b7a64800b9e577e219d4View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-004i-0900000000-a5138c4f03667c81645cView in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-004i-0910000000-b8f17a35f754f6a2adffView in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-004i-0900000000-40d23196cb4ee1cad23fView in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableView in JSpectraViewer
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-00di-9400000000-cac8577601b69f1b723aView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-00di-9000000000-43361da834d0b07907fdView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-00di-9000000000-6090b56aa5a22d72fb4fView in MoNA
LC-MS/MSLC-MS/MS Spectrum - 35V, Negativesplash10-03kc-9400000000-f71dc9c687b7114eed8bView in MoNA
LC-MS/MSLC-MS/MS Spectrum - 35V, Positivesplash10-0a4i-9100000000-b03227c3dde8ee858ffbView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-03di-9500000000-a4583e8c3a4365d330e2View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-03di-9000000000-433cb4a770ae8f69c615View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0006-9000000000-ff3de228e84a6b4470bcView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-00di-9400000000-7375ade3d9a2e79890d4View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0ab9-9000000000-4fa3654466563449190cView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0a4i-9000000000-375f7404d6c31bdf96b3View in MoNA
1D NMR1H NMR Spectrum (1D, 500 MHz, H2O, experimental)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, D2O, experimental)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, D2O, experimental)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 100 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 200 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 300 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 400 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 500 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 600 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 700 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 800 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 900 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 1000 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental)Not AvailableView in JSpectraViewer
Biological Properties
Cellular Locations
  • Cytoplasm
  • Mitochondria
Biospecimen Locations
  • Blood
  • Epidermis
  • Liver
  • Longissimus Thoracis Muscle
  • Milk
  • Placenta
  • Ruminal Fluid
  • Semimembranosus Muscle
  • Testis
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified1.2 +/- 0.3 uMNot SpecifiedNot Specified
Normal
    • Aidin Foroutan, C...
details
EpidermisExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
LiverDetected and Quantified13 +/- 28 nmol/g of tissueNot SpecifiedNot Specified
Normal
    • Aidin Foroutan, C...
details
Longissimus Thoracis MuscleDetected and Quantified3 +/- 7 nmol/g of tissueNot SpecifiedNot Specified
Normal
    • Aidin Foroutan, C...
details
MilkDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
PlacentaExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
Ruminal FluidDetected and Quantified26 +/- 9 uMNot SpecifiedNot Specified
Normal
    • Aidin Foroutan, C...
details
Ruminal FluidDetected and Quantified0.84 +/- 15.43 uMNot SpecifiedNot SpecifiedNormal
    • Fozia Saleem, Sou...
details
Ruminal FluidDetected and Quantified20.84 +/- 15.4 uMNot SpecifiedNot Specified
Normal
    • Fozia Saleem, Sou...
details
Semimembranosus MuscleDetected and Quantified2 +/- 8 nmol/g of tissueNot SpecifiedNot Specified
Normal
    • Aidin Foroutan, C...
details
TestisDetected and Quantified1 +/- 0.4 nmol/g of tissueNot SpecifiedNot Specified
Normal
    • Aidin Foroutan, C...
details
Abnormal Concentrations
Not Available
HMDB IDHMDB0002005
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB022789
KNApSAcK IDNot Available
Chemspider ID139840
KEGG Compound IDC02989
BioCyc IDCPD0-1959
BiGG IDNot Available
Wikipedia LinkMethionine sulfoxide
METLIN ID6428
PubChem Compound158980
PDB IDNot Available
ChEBI ID17016
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Hagi T, Kobayashi M, Nomura M: Metabolome analysis of milk fermented by gamma-aminobutyric acid-producing Lactococcus lactis. J Dairy Sci. 2016 Feb;99(2):994-1001. doi: 10.3168/jds.2015-9945. Epub 2015 Dec 10. [PubMed:26686724 ]

Enzymes

General function:
Not Available
Specific function:
Methionine-sulfoxide reductase that specifically reduces methionine (R)-sulfoxide back to methionine. While in many cases methionine oxidation is the result of random oxidation following oxidative stress, methionine oxidation is also a post-translational modification that takes place on specific residues.
Gene Name:
MSRB3
Uniprot ID:
E1BMD3
Molecular weight:
20644.0
Reactions
L-Methionine + oxidized thioredoxin → Methionine sulfoxide + reduced thioredoxindetails