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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 11:23:54 UTC
Update Date2021-09-26 23:06:15 UTC
HMDB IDHMDB0253179
Secondary Accession NumbersNone
Metabolite Identification
Common NameHistidinyl-Leucine
DescriptionHistidinyl-Leucine, also known as H-L dipeptide or his-leu, 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. Histidinyl-Leucine is a very strong basic compound (based on its pKa). This dipeptide has not yet been identified in human tissues or biofluids and so it is classified as an 'Expected' metabolite. It is an incomplete breakdown product of protein digestion or protein catabolism. Histidinyl-Leucine is a dipeptide composed of histidine and leucine. 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 compound has been identified in human blood as reported by (PMID: 31557052 ). Histidinyl-leucine is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Histidinyl-Leucine is part of the human exposome. The exposome can be defined as the collection of all the exposures of an individual in a lifetime and how those exposures relate to health. An individual's exposure begins before birth and includes insults from environmental and occupational sources.
Structure
Thumb
Synonyms
ValueSource
H-L DipeptideHMDB
His-leuHMDB
Histidine leucine dipeptideHMDB
Histidine-leucine dipeptideHMDB
HistidinylleucineHMDB
HL DipeptideHMDB
L-Histidinyl-L-leucineHMDB
HistidylleucineHMDB
2-{[2-amino-1-hydroxy-3-(1H-imidazol-5-yl)propylidene]amino}-4-methylpentanoateGenerator
Chemical FormulaC12H20N4O3
Average Molecular Weight268.3122
Monoisotopic Molecular Weight268.153540526
IUPAC Name2-[2-amino-3-(1H-imidazol-5-yl)propanamido]-4-methylpentanoic acid
Traditional Name2-[2-amino-3-(3H-imidazol-4-yl)propanamido]-4-methylpentanoic acid
CAS Registry NumberNot Available
SMILES
CC(C)CC(NC(=O)C(N)CC1=CN=CN1)C(O)=O
InChI Identifier
InChI=1S/C12H20N4O3/c1-7(2)3-10(12(18)19)16-11(17)9(13)4-8-5-14-6-15-8/h5-7,9-10H,3-4,13H2,1-2H3,(H,14,15)(H,16,17)(H,18,19)
InChI KeyMMFKFJORZBJVNF-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
  • Histidine or derivatives
  • Leucine or derivatives
  • N-acyl-alpha-amino acid
  • N-acyl-alpha amino acid or derivatives
  • Alpha-amino acid amide
  • Alpha-amino acid or derivatives
  • Imidazolyl carboxylic acid derivative
  • Aralkylamine
  • Fatty amide
  • Fatty acyl
  • Imidazole
  • Azole
  • Heteroaromatic compound
  • Carboxamide group
  • Secondary carboxylic acid amide
  • Amino acid or derivatives
  • Amino acid
  • Monocarboxylic acid or derivatives
  • Organoheterocyclic compound
  • Carboxylic acid
  • Azacycle
  • Organic nitrogen compound
  • Primary aliphatic amine
  • Organonitrogen compound
  • Organooxygen compound
  • Primary amine
  • Hydrocarbon derivative
  • Carbonyl group
  • Organic oxide
  • Organopnictogen compound
  • Amine
  • Organic oxygen compound
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External DescriptorsNot Available
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateNot Available
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
Predicted Chromatographic Properties
Spectra
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDC05010
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound440549
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. Barupal DK, Fiehn O: Generating the Blood Exposome Database Using a Comprehensive Text Mining and Database Fusion Approach. Environ Health Perspect. 2019 Sep;127(9):97008. doi: 10.1289/EHP4713. Epub 2019 Sep 26. [PubMed:31557052 ]