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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2008-10-29 15:21:35 UTC
Update Date2021-09-14 15:45:02 UTC
HMDB IDHMDB0011174
Secondary Accession Numbers
  • HMDB0028915
  • HMDB11174
  • HMDB28915
Metabolite Identification
Common NameIsoleucylproline
DescriptionIsoleucylproline is a dipeptide composed of isoleucine and proline. 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. It is found in urine (PMID: 3782411 ).
Structure
Data?1582752876
Synonyms
ValueSource
IPChEBI
Isoleucyl-prolineChEBI
L-Ile-L-proChEBI
1-L-Isoleucyl-L-prolineHMDB
1-L-Isoleucyl-prolineHMDB
I-p dipeptideHMDB
IP dipeptideHMDB
Ile-proHMDB
Isoleucine proline dipeptideHMDB
Isoleucine-proline dipeptideHMDB
L-Isoleucyl-L-prolineHMDB
IsoleucylprolineChEBI
IP dipeptide HMDB
Chemical FormulaC11H20N2O3
Average Molecular Weight228.292
Monoisotopic Molecular Weight228.147392512
IUPAC Name(2S)-1-[(2S,3S)-2-amino-3-methylpentanoyl]pyrrolidine-2-carboxylic acid
Traditional Name(2S)-1-[(2S,3S)-2-amino-3-methylpentanoyl]pyrrolidine-2-carboxylic acid
CAS Registry Number37462-92-3
SMILES
CC[C@H](C)[C@H](N)C(=O)N1CCC[C@H]1C(O)=O
InChI Identifier
InChI=1S/C11H20N2O3/c1-3-7(2)9(12)10(14)13-6-4-5-8(13)11(15)16/h7-9H,3-6,12H2,1-2H3,(H,15,16)/t7-,8-,9-/m0/s1
InChI KeyBBIXOODYWPFNDT-CIUDSAMLSA-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
  • Isoleucine or derivatives
  • N-acyl-alpha-amino acid
  • N-acyl-alpha amino acid or derivatives
  • Proline or derivatives
  • N-acyl-l-alpha-amino acid
  • Alpha-amino acid amide
  • Alpha-amino acid or derivatives
  • N-acylpyrrolidine
  • Pyrrolidine carboxylic acid
  • Pyrrolidine carboxylic acid or derivatives
  • Pyrrolidine
  • Tertiary carboxylic acid amide
  • Amino acid or derivatives
  • Carboxamide group
  • Amino acid
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Azacycle
  • Organoheterocyclic compound
  • Primary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Organic oxygen compound
  • Organic oxide
  • Organopnictogen compound
  • Primary aliphatic amine
  • Organic nitrogen compound
  • Carbonyl group
  • Amine
  • Hydrocarbon derivative
  • Aliphatic heteromonocyclic compound
Molecular FrameworkAliphatic heteromonocyclic 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
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility50.3 g/LALOGPS
logP-0.45ALOGPS
logP-1.8ChemAxon
logS-0.66ALOGPS
pKa (Strongest Acidic)3.92ChemAxon
pKa (Strongest Basic)8.5ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area83.63 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity59.08 m³·mol⁻¹ChemAxon
Polarizability24.28 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+161.2830932474
DeepCCS[M-H]-158.92230932474
DeepCCS[M-2H]-191.80830932474
DeepCCS[M+Na]+167.37330932474

Predicted Retention Times

Underivatized

Chromatographic MethodRetention TimeReference
Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter). Predicted by Afia on May 17, 2022. Predicted by Afia on May 17, 2022.1.93 minutes32390414
Predicted by Siyang on May 30, 20229.7934 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20226.35 minutes32390414
AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid263.8 seconds40023050
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid1010.0 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid211.3 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid104.6 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid158.0 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid69.9 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid280.9 seconds40023050
BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid310.4 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)573.8 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid649.3 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid246.7 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid944.3 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid176.3 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid217.7 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate435.0 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA400.7 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water176.2 seconds40023050

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
IsoleucylprolineCC[C@H](C)[C@H](N)C(=O)N1CCC[C@H]1C(O)=O2799.4Standard polar33892256
IsoleucylprolineCC[C@H](C)[C@H](N)C(=O)N1CCC[C@H]1C(O)=O1977.3Standard non polar33892256
IsoleucylprolineCC[C@H](C)[C@H](N)C(=O)N1CCC[C@H]1C(O)=O1990.1Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Isoleucylproline,1TMS,isomer #1CC[C@H](C)[C@H](N)C(=O)N1CCC[C@H]1C(=O)O[Si](C)(C)C1902.2Semi standard non polar33892256
Isoleucylproline,1TMS,isomer #2CC[C@H](C)[C@H](N[Si](C)(C)C)C(=O)N1CCC[C@H]1C(=O)O1931.9Semi standard non polar33892256
Isoleucylproline,2TMS,isomer #1CC[C@H](C)[C@H](N[Si](C)(C)C)C(=O)N1CCC[C@H]1C(=O)O[Si](C)(C)C1943.1Semi standard non polar33892256
Isoleucylproline,2TMS,isomer #1CC[C@H](C)[C@H](N[Si](C)(C)C)C(=O)N1CCC[C@H]1C(=O)O[Si](C)(C)C2009.2Standard non polar33892256
Isoleucylproline,2TMS,isomer #1CC[C@H](C)[C@H](N[Si](C)(C)C)C(=O)N1CCC[C@H]1C(=O)O[Si](C)(C)C2452.1Standard polar33892256
Isoleucylproline,2TMS,isomer #2CC[C@H](C)[C@@H](C(=O)N1CCC[C@H]1C(=O)O)N([Si](C)(C)C)[Si](C)(C)C2051.9Semi standard non polar33892256
Isoleucylproline,2TMS,isomer #2CC[C@H](C)[C@@H](C(=O)N1CCC[C@H]1C(=O)O)N([Si](C)(C)C)[Si](C)(C)C2065.3Standard non polar33892256
Isoleucylproline,2TMS,isomer #2CC[C@H](C)[C@@H](C(=O)N1CCC[C@H]1C(=O)O)N([Si](C)(C)C)[Si](C)(C)C2598.4Standard polar33892256
Isoleucylproline,3TMS,isomer #1CC[C@H](C)[C@@H](C(=O)N1CCC[C@H]1C(=O)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C2102.2Semi standard non polar33892256
Isoleucylproline,3TMS,isomer #1CC[C@H](C)[C@@H](C(=O)N1CCC[C@H]1C(=O)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C2126.1Standard non polar33892256
Isoleucylproline,3TMS,isomer #1CC[C@H](C)[C@@H](C(=O)N1CCC[C@H]1C(=O)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C2279.9Standard polar33892256
Isoleucylproline,1TBDMS,isomer #1CC[C@H](C)[C@H](N)C(=O)N1CCC[C@H]1C(=O)O[Si](C)(C)C(C)(C)C2136.6Semi standard non polar33892256
Isoleucylproline,1TBDMS,isomer #2CC[C@H](C)[C@H](N[Si](C)(C)C(C)(C)C)C(=O)N1CCC[C@H]1C(=O)O2164.9Semi standard non polar33892256
Isoleucylproline,2TBDMS,isomer #1CC[C@H](C)[C@H](N[Si](C)(C)C(C)(C)C)C(=O)N1CCC[C@H]1C(=O)O[Si](C)(C)C(C)(C)C2412.7Semi standard non polar33892256
Isoleucylproline,2TBDMS,isomer #1CC[C@H](C)[C@H](N[Si](C)(C)C(C)(C)C)C(=O)N1CCC[C@H]1C(=O)O[Si](C)(C)C(C)(C)C2403.3Standard non polar33892256
Isoleucylproline,2TBDMS,isomer #1CC[C@H](C)[C@H](N[Si](C)(C)C(C)(C)C)C(=O)N1CCC[C@H]1C(=O)O[Si](C)(C)C(C)(C)C2637.2Standard polar33892256
Isoleucylproline,2TBDMS,isomer #2CC[C@H](C)[C@@H](C(=O)N1CCC[C@H]1C(=O)O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2474.9Semi standard non polar33892256
Isoleucylproline,2TBDMS,isomer #2CC[C@H](C)[C@@H](C(=O)N1CCC[C@H]1C(=O)O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2479.1Standard non polar33892256
Isoleucylproline,2TBDMS,isomer #2CC[C@H](C)[C@@H](C(=O)N1CCC[C@H]1C(=O)O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2714.5Standard polar33892256
Isoleucylproline,3TBDMS,isomer #1CC[C@H](C)[C@@H](C(=O)N1CCC[C@H]1C(=O)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2743.0Semi standard non polar33892256
Isoleucylproline,3TBDMS,isomer #1CC[C@H](C)[C@@H](C(=O)N1CCC[C@H]1C(=O)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2681.2Standard non polar33892256
Isoleucylproline,3TBDMS,isomer #1CC[C@H](C)[C@@H](C(=O)N1CCC[C@H]1C(=O)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2609.0Standard polar33892256
Spectra
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
  • Urine
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodExpected but not QuantifiedNot QuantifiedNot AvailableNot Available
Normal
      Not Available
details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
UrineDetected but not QuantifiedNot QuantifiedChildren (1-13 years old)BothAsthma details
Associated Disorders and Diseases
Disease References
Asthma
  1. Mattarucchi E, Baraldi E, Guillou C: Metabolomics applied to urine samples in childhood asthma; differentiation between asthma phenotypes and identification of relevant metabolites. Biomed Chromatogr. 2012 Jan;26(1):89-94. doi: 10.1002/bmc.1631. Epub 2011 Apr 4. [PubMed:21465502 ]
Associated OMIM IDs
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider ID392673
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound444876
PDB IDNot Available
ChEBI ID74076
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. Jandke J, Spiteller G: Dipeptide analysis in human urine. J Chromatogr. 1986 Oct 31;382:39-45. [PubMed:3782411 ]