Record Information
Version2.0
Creation Date2015-06-11 10:46:25 -0600
Update Date2015-08-05 16:22:05 -0600
Secondary Accession Numbers
  • ECMDB23898
Identification
Name:L-Ornithine
Description:An optically active form of ornithine having L-configuration
Structure
Thumb
Synonyms:
  • (S)-2,5-Diaminopentanoate
  • (S)-2,5-Diaminopentanoic acid
  • (S)-2,5-Diaminovalerate
  • (S)-2,5-Diaminovaleric acid
Chemical Formula:C5H12N2O2
Weight:Average: 132.161
Monoisotopic: 132.089877638
InChI Key:AHLPHDHHMVZTML-BYPYZUCNSA-N
InChI:InChI=1S/C5H12N2O2/c6-3-1-2-4(7)5(8)9/h4H,1-3,6-7H2,(H,8,9)/t4-/m0/s1
CAS number:70-26-8
IUPAC Name:(2S)-2,5-diaminopentanoic acid
Traditional IUPAC Name:ornithine
SMILES:NCCC[C@H](N)C(O)=O
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
  • Fatty acid
  • Amino acid
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Amine
  • Hydrocarbon derivative
  • Organic oxide
  • Organopnictogen compound
  • Primary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Organic oxygen compound
  • Primary aliphatic amine
  • Organic nitrogen compound
  • Carbonyl group
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Physical Properties
State:Not Available
Charge:1
Melting point:Not Available
Experimental Properties:
PropertyValueSource
Predicted Properties
PropertyValueSource
Water Solubility172 g/LALOGPS
logP-3.6ALOGPS
logP-3.7ChemAxon
logS0.11ALOGPS
pKa (Strongest Acidic)2.67ChemAxon
pKa (Strongest Basic)10.29ChemAxon
Physiological Charge1ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area89.34 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity33.21 m³·mol⁻¹ChemAxon
Polarizability13.85 ųChemAxon
Number of Rings0ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations:Cytoplasm
Reactions:
SMPDB Pathways:
Glutathione metabolismPW000833 ThumbThumb?image type=greyscaleThumb?image type=simple
KEGG Pathways:
EcoCyc Pathways:Not Available
Concentrations
Not Available
Spectra
Spectra:
Spectrum TypeDescriptionSplash Key
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (2 TMS)splash10-0006-1920000000-b0357b8c9888abda7d80View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized)splash10-0006-0910000000-8aaa0faabf1429b90611View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (2 TMS)splash10-00di-7910000000-5fa118444ceb45204aa3View in MoNA
GC-MSGC-MS Spectrum - GC-MS (3 TMS)splash10-006x-3910000000-f6d0c6492f2cab33a392View in MoNA
GC-MSGC-MS Spectrum - GC-MS (3 TMS)splash10-00dr-2900000000-77222ff2d0118d3d3b57View in MoNA
GC-MSGC-MS Spectrum - GC-MS (4 TMS)splash10-0006-1910000000-53c73c4fa3665c44d3b9View in MoNA
GC-MSGC-MS Spectrum - GC-MS (5 TMS)splash10-03di-1691000000-dc14976cfee86cc828b9View in MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-0006-0920000000-f65f61e4a3739eabb1d1View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0006-1920000000-b0357b8c9888abda7d80View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0006-0910000000-8aaa0faabf1429b90611View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00di-7910000000-5fa118444ceb45204aa3View in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-006x-3910000000-f6d0c6492f2cab33a392View in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-00dr-2900000000-77222ff2d0118d3d3b57View in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-0006-1910000000-53c73c4fa3665c44d3b9View in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-03di-1691000000-dc14976cfee86cc828b9View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0006-0900000000-f59681b9f46f1b738487View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0006-0900000000-3048477975b51ae176afView in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00dr-2900000000-8d1a2cc0a88f7d9216e1View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0udi-1900000000-bc40b76e8b03ef7a08f0View in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-001l-9000000000-50fe14c2cb68fd09e32fView in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (1 TMS) - 70eV, Positivesplash10-0089-9300000000-bbfdea03043e52ad8a15View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-01b9-6900000000-8fe592b77d2d8e4ae704View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-00di-9000000000-462b84db532c33527580View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-00di-9000000000-9c9c28d2e40d5eadacd2View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-001i-0900000000-e44e06092c06bb4791afView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-014i-9000000000-4d6ccc429f5155b24654View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-014i-0900000000-dcad699e8ed7e1b19860View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-001i-0900000000-7b130437d4e1ceea277bView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-001i-0900000000-0fae230bc6b21623a4bfView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-014i-9000000000-5a350a8e7c607a8b9a60View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-014i-0900000000-516054b6c2f3cd4a1d02View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-000i-0793321000-9fef988b5ce019f84642View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-03di-0900000000-a612df8df5f8ba1ff7f3View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-001i-0910000000-97fad20414656e2b7b93View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-01di-0490000000-1b137b937beb110d2e4bView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Negativesplash10-001i-0900000000-e3fc95eb909e45d8e648View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Negativesplash10-001i-1900000000-cdd9aac89a5a71814ff3View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Negativesplash10-001r-9500000000-f1cc3eccf3f5ab734222View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Positivesplash10-0159-0900000000-93ce7b142d1f82f17e95View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Positivesplash10-00di-9200000000-186f270471bdec40f804View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Positivesplash10-00di-9000000000-ebbdf0ab6d3180cba1a5View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Positivesplash10-00di-9000000000-207bcc826fb2238c2cc5View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Positivesplash10-00di-9000000000-a2f9a950fb23a6b18857View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-01c9-9700000000-0364d35bb1a7c10a09c7View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-00dr-9100000000-9c4015733140885b4957View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-00dl-9000000000-b32e7180e30a835008bbView in MoNA
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR13C NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
2D NMR[1H,1H] 2D NMR SpectrumNot AvailableView in JSpectraViewer
2D NMR[1H,13C] 2D NMR SpectrumNot AvailableView in JSpectraViewer
References
References:Not Available
Synthesis Reference:Not Available
Material Safety Data Sheet (MSDS)Not Available
External Links:
ResourceLink
CHEBI ID15729
HMDB IDHMDB0000214
Pubchem Compound ID6262
Kegg IDC00077
ChemSpider ID6026
Wikipedia IDOrnithine
BioCyc IDNot Available

Enzymes

General function:
Involved in carboxyl- or carbamoyltransferase activity
Specific function:
Carbamoyl phosphate + L-ornithine = phosphate + L-citrulline
Gene Name:
argI
Uniprot ID:
P04391
Molecular weight:
36907
Reactions
Carbamoyl phosphate + L-ornithine = phosphate + L-citrulline.
General function:
Involved in carboxyl- or carbamoyltransferase activity
Specific function:
Carbamoyl phosphate + L-ornithine = phosphate + L-citrulline
Gene Name:
argF
Uniprot ID:
P06960
Molecular weight:
36827
Reactions
Carbamoyl phosphate + L-ornithine = phosphate + L-citrulline.
General function:
Involved in carboxy-lyase activity
Specific function:
L-ornithine = putrescine + CO(2)
Gene Name:
speC
Uniprot ID:
P21169
Molecular weight:
79416
Reactions
L-ornithine = putrescine + CO(2).
General function:
Involved in zinc ion binding
Specific function:
Displays a broad specificity and can also deacylate substrates such as acetylarginine, acetylhistidine or acetylglutamate semialdehyde
Gene Name:
argE
Uniprot ID:
P23908
Molecular weight:
42347
Reactions
N(2)-acetyl-L-ornithine + H(2)O = acetate + L-ornithine.
General function:
Involved in carboxy-lyase activity
Specific function:
L-ornithine = putrescine + CO(2)
Gene Name:
speF
Uniprot ID:
P24169
Molecular weight:
82415
Reactions
L-ornithine = putrescine + CO(2).