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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2012-09-06 21:03:02 UTC
Update Date2022-09-22 18:34:22 UTC
HMDB IDHMDB0028933
Secondary Accession Numbers
  • HMDB28933
Metabolite Identification
Common NameLeucylleucine
DescriptionLeucylleucine, also known as LL or H-L-leu-L-leu-OH, belongs to the class of organic compounds known as peptides. Peptides are compounds containing an amide derived from two or more amino carboxylic acid molecules (the same or different) by formation of a covalent bond from the carbonyl carbon of one to the nitrogen atom of another. Leucylleucine has been detected, but not quantified in, a few different foods, such as anatidaes (Anatidae), chickens (Gallus gallus), and domestic pigs (Sus scrofa domestica). This could make leucylleucine a potential biomarker for the consumption of these foods. Leucylleucine is a secondary metabolite. Secondary metabolites are metabolically or physiologically non-essential metabolites that may serve a role as defense or signalling molecules. In some cases they are simply molecules that arise from the incomplete metabolism of other secondary metabolites. Based on a literature review a significant number of articles have been published on Leucylleucine.
Structure
Thumb
Synonyms
Chemical FormulaC12H24N2O3
Average Molecular Weight244.335
Monoisotopic Molecular Weight244.178692641
IUPAC Name(2S)-2-[(2S)-2-amino-4-methylpentanamido]-4-methylpentanoic acid
Traditional Nameleucyl-leucine
CAS Registry Number3303-31-9
SMILES
CC(C)C[C@H](N)C(=O)N[C@@H](CC(C)C)C(O)=O
InChI Identifier
InChI=1S/C12H24N2O3/c1-7(2)5-9(13)11(15)14-10(12(16)17)6-8(3)4/h7-10H,5-6,13H2,1-4H3,(H,14,15)(H,16,17)/t9-,10-/m0/s1
InChI KeyLCPYQJIKPJDLLB-UWVGGRQHSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as peptides. Peptides are compounds containing an amide derived from two or more amino carboxylic acid molecules (the same or different) by formation of a covalent bond from the carbonyl carbon of one to the nitrogen atom of another.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentPeptides
Alternative Parents
Substituents
  • Alpha peptide
  • Leucine or derivatives
  • N-acyl-alpha-amino acid
  • N-acyl-alpha amino acid or derivatives
  • Alpha-amino acid or derivatives
  • Branched fatty acid
  • Methyl-branched fatty acid
  • Fatty acyl
  • Fatty acid
  • Amino acid or derivatives
  • Amino acid
  • Carboximidic acid
  • Carboximidic acid derivative
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Organic 1,3-dipolar compound
  • Propargyl-type 1,3-dipolar organic compound
  • Organic oxide
  • Organic oxygen compound
  • Primary aliphatic amine
  • Amine
  • Organic nitrogen compound
  • Hydrocarbon derivative
  • Organonitrogen compound
  • Organooxygen compound
  • Organopnictogen compound
  • Primary amine
  • Carbonyl group
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
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-0.87Extrapolated
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
Predicted Chromatographic Properties
Spectra
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
  • Feces
  • Saliva
  • Urine
Tissue LocationsNot Available
Pathways
Normal Concentrations
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedCancer patients undergoing total body irradiation details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Colorectal cancer
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Colorectal cancer
details
UrineDetected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedCancer patients undergoing total body irradiation details
Associated Disorders and Diseases
Disease References
Colorectal cancer
  1. Sinha R, Ahn J, Sampson JN, Shi J, Yu G, Xiong X, Hayes RB, Goedert JJ: Fecal Microbiota, Fecal Metabolome, and Colorectal Cancer Interrelations. PLoS One. 2016 Mar 25;11(3):e0152126. doi: 10.1371/journal.pone.0152126. eCollection 2016. [PubMed:27015276 ]
  2. Goedert JJ, Sampson JN, Moore SC, Xiao Q, Xiong X, Hayes RB, Ahn J, Shi J, Sinha R: Fecal metabolomics: assay performance and association with colorectal cancer. Carcinogenesis. 2014 Sep;35(9):2089-96. doi: 10.1093/carcin/bgu131. Epub 2014 Jul 18. [PubMed:25037050 ]
Associated OMIM IDs
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB111960
KNApSAcK IDC00038887
Chemspider ID69263
KEGG Compound IDC11332
BioCyc IDL-LEUCYL-L-LEUCINE
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound76807
PDB IDNot Available
ChEBI ID73531
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