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Version5.0
StatusExpected but not Quantified
Creation Date2012-09-06 21:03:13 UTC
Update Date2021-09-14 15:45:52 UTC
HMDB IDHMDB0028977
Secondary Accession Numbers
  • HMDB28977
Metabolite Identification
Common NameMethionyl-Leucine
DescriptionMethionyl-Leucine is a dipeptide composed of methionine and leucine. It is an incomplete breakdown product of protein digestion or protein catabolism. Some dipeptides are known to have physiological or cell-signaling effects although most are simply short-lived intermediates on their way to specific amino acid degradation pathways following further proteolysis. This dipeptide has not yet been identified in human tissues or biofluids and so it is classified as an 'Expected' metabolite.
Structure
Data?1582753361
Synonyms
ValueSource
L-Methionyl-L-leucineHMDB
m-L DipeptideHMDB
Met-leuHMDB
Methionine leucine dipeptideHMDB
Methionine-leucine dipeptideHMDB
MethionylleucineHMDB
ML DipeptideHMDB
2-{[2-amino-1-hydroxy-4-(methylsulfanyl)butylidene]amino}-4-methylpentanoateHMDB
2-{[2-amino-1-hydroxy-4-(methylsulphanyl)butylidene]amino}-4-methylpentanoateHMDB
2-{[2-amino-1-hydroxy-4-(methylsulphanyl)butylidene]amino}-4-methylpentanoic acidHMDB
Chemical FormulaC11H22N2O3S
Average Molecular Weight262.369
Monoisotopic Molecular Weight262.13511327
IUPAC Name2-[2-amino-4-(methylsulfanyl)butanamido]-4-methylpentanoic acid
Traditional Namemet-leu
CAS Registry NumberNot Available
SMILES
CSCCC(N)C(=O)NC(CC(C)C)C(O)=O
InChI Identifier
InChI=1S/C11H22N2O3S/c1-7(2)6-9(11(15)16)13-10(14)8(12)4-5-17-3/h7-9H,4-6,12H2,1-3H3,(H,13,14)(H,15,16)
InChI KeyPBOUVYGPDSARIS-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as dipeptides. These are organic compounds containing a sequence of exactly two alpha-amino acids joined by a peptide bond.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentDipeptides
Alternative Parents
Substituents
  • Alpha-dipeptide
  • Leucine or derivatives
  • Methionine or derivatives
  • N-acyl-alpha amino acid or derivatives
  • N-acyl-alpha-amino acid
  • Alpha-amino acid amide
  • Alpha-amino acid or derivatives
  • Branched fatty acid
  • Methyl-branched fatty acid
  • Fatty acyl
  • Fatty acid
  • Fatty amide
  • N-acyl-amine
  • Secondary carboxylic acid amide
  • Amino acid or derivatives
  • Amino acid
  • Carboxamide group
  • Carboxylic acid
  • Dialkylthioether
  • Monocarboxylic acid or derivatives
  • Sulfenyl compound
  • Thioether
  • Amine
  • Organic oxygen compound
  • Primary aliphatic amine
  • Organic nitrogen compound
  • Hydrocarbon derivative
  • Carbonyl group
  • Organic oxide
  • Organopnictogen compound
  • Primary amine
  • Organonitrogen compound
  • Organooxygen compound
  • Organosulfur compound
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External DescriptorsNot Available
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogP-1.47Extrapolated
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility1.35 g/LALOGPS
logP-0.33ALOGPS
logP-1.5ChemAxon
logS-2.3ALOGPS
pKa (Strongest Acidic)3.98ChemAxon
pKa (Strongest Basic)8.42ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area92.42 ŲChemAxon
Rotatable Bond Count8ChemAxon
Refractivity68.56 m³·mol⁻¹ChemAxon
Polarizability28.73 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+161.7431661259
DarkChem[M-H]-157.2831661259
DeepCCS[M+H]+161.03530932474
DeepCCS[M-H]-157.63330932474
DeepCCS[M-2H]-193.630932474
DeepCCS[M+Na]+169.83630932474
AllCCS[M+H]+161.732859911
AllCCS[M+H-H2O]+158.732859911
AllCCS[M+NH4]+164.432859911
AllCCS[M+Na]+165.232859911
AllCCS[M-H]-161.332859911
AllCCS[M+Na-2H]-162.432859911
AllCCS[M+HCOO]-163.732859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
Methionyl-LeucineCSCCC(N)C(=O)NC(CC(C)C)C(O)=O3104.4Standard polar33892256
Methionyl-LeucineCSCCC(N)C(=O)NC(CC(C)C)C(O)=O1992.1Standard non polar33892256
Methionyl-LeucineCSCCC(N)C(=O)NC(CC(C)C)C(O)=O2144.2Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Methionyl-Leucine,1TMS,isomer #1CSCCC(N)C(=O)NC(CC(C)C)C(=O)O[Si](C)(C)C2087.0Semi standard non polar33892256
Methionyl-Leucine,1TMS,isomer #2CSCCC(N[Si](C)(C)C)C(=O)NC(CC(C)C)C(=O)O2128.5Semi standard non polar33892256
Methionyl-Leucine,1TMS,isomer #3CSCCC(N)C(=O)N(C(CC(C)C)C(=O)O)[Si](C)(C)C2104.9Semi standard non polar33892256
Methionyl-Leucine,2TMS,isomer #1CSCCC(N[Si](C)(C)C)C(=O)NC(CC(C)C)C(=O)O[Si](C)(C)C2137.8Semi standard non polar33892256
Methionyl-Leucine,2TMS,isomer #1CSCCC(N[Si](C)(C)C)C(=O)NC(CC(C)C)C(=O)O[Si](C)(C)C2125.5Standard non polar33892256
Methionyl-Leucine,2TMS,isomer #2CSCCC(N)C(=O)N(C(CC(C)C)C(=O)O[Si](C)(C)C)[Si](C)(C)C2088.8Semi standard non polar33892256
Methionyl-Leucine,2TMS,isomer #2CSCCC(N)C(=O)N(C(CC(C)C)C(=O)O[Si](C)(C)C)[Si](C)(C)C2120.2Standard non polar33892256
Methionyl-Leucine,2TMS,isomer #3CSCCC(C(=O)NC(CC(C)C)C(=O)O)N([Si](C)(C)C)[Si](C)(C)C2265.1Semi standard non polar33892256
Methionyl-Leucine,2TMS,isomer #3CSCCC(C(=O)NC(CC(C)C)C(=O)O)N([Si](C)(C)C)[Si](C)(C)C2179.7Standard non polar33892256
Methionyl-Leucine,2TMS,isomer #4CSCCC(N[Si](C)(C)C)C(=O)N(C(CC(C)C)C(=O)O)[Si](C)(C)C2178.4Semi standard non polar33892256
Methionyl-Leucine,2TMS,isomer #4CSCCC(N[Si](C)(C)C)C(=O)N(C(CC(C)C)C(=O)O)[Si](C)(C)C2142.1Standard non polar33892256
Methionyl-Leucine,3TMS,isomer #1CSCCC(C(=O)NC(CC(C)C)C(=O)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C2252.3Semi standard non polar33892256
Methionyl-Leucine,3TMS,isomer #1CSCCC(C(=O)NC(CC(C)C)C(=O)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C2263.3Standard non polar33892256
Methionyl-Leucine,3TMS,isomer #2CSCCC(N[Si](C)(C)C)C(=O)N(C(CC(C)C)C(=O)O[Si](C)(C)C)[Si](C)(C)C2146.9Semi standard non polar33892256
Methionyl-Leucine,3TMS,isomer #2CSCCC(N[Si](C)(C)C)C(=O)N(C(CC(C)C)C(=O)O[Si](C)(C)C)[Si](C)(C)C2213.7Standard non polar33892256
Methionyl-Leucine,3TMS,isomer #3CSCCC(C(=O)N(C(CC(C)C)C(=O)O)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C2317.3Semi standard non polar33892256
Methionyl-Leucine,3TMS,isomer #3CSCCC(C(=O)N(C(CC(C)C)C(=O)O)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C2284.7Standard non polar33892256
Methionyl-Leucine,4TMS,isomer #1CSCCC(C(=O)N(C(CC(C)C)C(=O)O[Si](C)(C)C)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C2316.1Semi standard non polar33892256
Methionyl-Leucine,4TMS,isomer #1CSCCC(C(=O)N(C(CC(C)C)C(=O)O[Si](C)(C)C)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C2357.9Standard non polar33892256
Methionyl-Leucine,1TBDMS,isomer #1CSCCC(N)C(=O)NC(CC(C)C)C(=O)O[Si](C)(C)C(C)(C)C2346.8Semi standard non polar33892256
Methionyl-Leucine,1TBDMS,isomer #2CSCCC(N[Si](C)(C)C(C)(C)C)C(=O)NC(CC(C)C)C(=O)O2369.7Semi standard non polar33892256
Methionyl-Leucine,1TBDMS,isomer #3CSCCC(N)C(=O)N(C(CC(C)C)C(=O)O)[Si](C)(C)C(C)(C)C2339.2Semi standard non polar33892256
Methionyl-Leucine,2TBDMS,isomer #1CSCCC(N[Si](C)(C)C(C)(C)C)C(=O)NC(CC(C)C)C(=O)O[Si](C)(C)C(C)(C)C2620.3Semi standard non polar33892256
Methionyl-Leucine,2TBDMS,isomer #1CSCCC(N[Si](C)(C)C(C)(C)C)C(=O)NC(CC(C)C)C(=O)O[Si](C)(C)C(C)(C)C2524.2Standard non polar33892256
Methionyl-Leucine,2TBDMS,isomer #2CSCCC(N)C(=O)N(C(CC(C)C)C(=O)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2576.1Semi standard non polar33892256
Methionyl-Leucine,2TBDMS,isomer #2CSCCC(N)C(=O)N(C(CC(C)C)C(=O)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2519.4Standard non polar33892256
Methionyl-Leucine,2TBDMS,isomer #3CSCCC(C(=O)NC(CC(C)C)C(=O)O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2741.7Semi standard non polar33892256
Methionyl-Leucine,2TBDMS,isomer #3CSCCC(C(=O)NC(CC(C)C)C(=O)O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2567.0Standard non polar33892256
Methionyl-Leucine,2TBDMS,isomer #4CSCCC(N[Si](C)(C)C(C)(C)C)C(=O)N(C(CC(C)C)C(=O)O)[Si](C)(C)C(C)(C)C2650.2Semi standard non polar33892256
Methionyl-Leucine,2TBDMS,isomer #4CSCCC(N[Si](C)(C)C(C)(C)C)C(=O)N(C(CC(C)C)C(=O)O)[Si](C)(C)C(C)(C)C2525.6Standard non polar33892256
Methionyl-Leucine,3TBDMS,isomer #1CSCCC(C(=O)NC(CC(C)C)C(=O)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2957.4Semi standard non polar33892256
Methionyl-Leucine,3TBDMS,isomer #1CSCCC(C(=O)NC(CC(C)C)C(=O)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2808.0Standard non polar33892256
Methionyl-Leucine,3TBDMS,isomer #2CSCCC(N[Si](C)(C)C(C)(C)C)C(=O)N(C(CC(C)C)C(=O)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2840.3Semi standard non polar33892256
Methionyl-Leucine,3TBDMS,isomer #2CSCCC(N[Si](C)(C)C(C)(C)C)C(=O)N(C(CC(C)C)C(=O)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2770.0Standard non polar33892256
Methionyl-Leucine,3TBDMS,isomer #3CSCCC(C(=O)N(C(CC(C)C)C(=O)O)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2988.7Semi standard non polar33892256
Methionyl-Leucine,3TBDMS,isomer #3CSCCC(C(=O)N(C(CC(C)C)C(=O)O)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2803.8Standard non polar33892256
Methionyl-Leucine,4TBDMS,isomer #1CSCCC(C(=O)N(C(CC(C)C)C(=O)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C3212.7Semi standard non polar33892256
Methionyl-Leucine,4TBDMS,isomer #1CSCCC(C(=O)N(C(CC(C)C)C(=O)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C3046.4Standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Methionyl-Leucine GC-MS (Non-derivatized) - 70eV, Positivesplash10-0f7o-9420000000-b1c459414254052ac1e02017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Methionyl-Leucine GC-MS (1 TMS) - 70eV, Positivesplash10-00dl-9210000000-a8db58966e66c42b4d342017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Methionyl-Leucine GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Methionyl-Leucine 10V, Positive-QTOFsplash10-0j5a-1590000000-4d53598843b606bbfc332017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Methionyl-Leucine 20V, Positive-QTOFsplash10-0f79-9620000000-daf7179df6b9f83481d12017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Methionyl-Leucine 40V, Positive-QTOFsplash10-0a4l-9100000000-f8452a8237d9d7b48ea12017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Methionyl-Leucine 10V, Negative-QTOFsplash10-03dj-5090000000-746ac49a9a64d33549f92017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Methionyl-Leucine 20V, Negative-QTOFsplash10-0002-9220000000-7940b56f69d11b5190262017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Methionyl-Leucine 40V, Negative-QTOFsplash10-0002-9100000000-143e546c4932e6186fca2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Methionyl-Leucine 10V, Negative-QTOFsplash10-03di-0190000000-d59bee02d53daec099be2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Methionyl-Leucine 20V, Negative-QTOFsplash10-001i-1900000000-fc1cd4ded0fc3b2ce4692021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Methionyl-Leucine 40V, Negative-QTOFsplash10-000w-9200000000-9c1e85432a1bcee175462021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Methionyl-Leucine 10V, Positive-QTOFsplash10-03di-1390000000-b2a5e76dd8934e0f36192021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Methionyl-Leucine 20V, Positive-QTOFsplash10-03ei-6950000000-7028383f1d6fbd1b685f2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Methionyl-Leucine 40V, Positive-QTOFsplash10-0nmi-9100000000-77de7660ea3efc5d40da2021-09-22Wishart LabView Spectrum

NMR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Predicted 1D NMR13C NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-09-29Wishart LabView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen LocationsNot Available
Tissue LocationsNot Available
Pathways
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB111998
KNApSAcK IDNot Available
Chemspider ID2669202
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound3425788
PDB IDNot Available
ChEBI IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Pan Y, Bender PK, Akers RM, Webb KE Jr: One or more serum factors promote peptide utilization in cultured animal cells. J Nutr. 1998 Apr;128(4):744-50. [PubMed:9521638 ]
  2. Ney P, Schroder H, Schror K: Nitrovasodilator-induced inhibition of LTB4 release from human PMN may be mediated by cyclic GMP. Eicosanoids. 1990;3(4):243-5. [PubMed:1963541 ]
  3. D'Amico M, Di Filippo C, Rossi F: Depressor responses to endothelin-1 into the superior colliculus of rats: predominant role of endothelin ET(B) receptors. Eur J Pharmacol. 1998 Apr 17;347(1):71-5. [PubMed:9650850 ]