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Record Information
Version1.0
Created at2005-11-16 15:48:42 UTC
Updated at2022-02-06 02:12:16 UTC
NP-MRD IDNP0000119
Secondary Accession NumbersNone
Natural Product Identification
Common NameOrnithine
DescriptionOrnithine or L-ornithine, also known as (S)-2,5-diaminopentanoic acid is a member of the class of compounds known as L-alpha-amino acids. L-alpha-amino acids are alpha amino acids which have the L-configuration of the alpha-carbon atom. L-ornithine is soluble (in water) and a moderately basic compound. Ornithine is a non-proteinogenic amino acid that plays a role in the urea cycle. It is considered to be a non-essential amino acid. A non-essential amino acid is an amino acid that can be synthesized from central metabolic pathway intermediates in humans and is not required in the diet. L-Ornithine is one of the products of the action of the enzyme arginase on L-arginine, creating urea. Therefore, ornithine is a central part of the urea cycle, which allows for the disposal of excess nitrogen. Outside the human body, L-ornithine is abundant in a number of food items such as wild rice, brazil nuts, common oregano, and common grapes. L-ornithine can be found throughout most human tissues; and in most biofluids, some of which include blood, urine, cerebrospinal fluid (CSF), sweat, saliva, and feces. L-ornithine exists in all living species, from bacteria to plants to humans. L-Ornithine is also a precursor of citrulline and arginine. In order for ornithine that is produced in the cytosol to be converted to citrulline, it must first cross the inner mitochondrial membrane into the mitochondrial matrix where it is carbamylated by the enzyme known as ornithine transcarbamylase. This transfer is mediated by the mitochondrial ornithine transporter (SLC25A15; AF112968; ORNT1). Mutations in the mitochondrial ornithine transporter result in hyperammonemia, hyperornithinemia, homocitrullinuria (HHH) syndrome, a disorder of the urea cycle (PMID: 16256388 ). The pathophysiology of the disease may involve diminished ornithine transport into mitochondria, resulting in ornithine accumulation in the cytoplasm and reduced ability to clear carbamoyl phosphate and ammonia loads (OMIM 838970 ). In humans, L-ornithine is involved in a number of other metabolic disorders, some of which include, ornithine transcarbamylase deficiency (OTC deficiency), argininemia, and guanidinoacetate methyltransferase deficiency (GAMT deficiency). Ornithine is abnormally accumulated in the body in ornithine transcarbamylase deficiency. Moreover, Ornithine is found to be associated with cystinuria, hyperdibasic aminoaciduria I, and lysinuric protein intolerance, which are inborn errors of metabolism. It has been claimed that ornithine improves athletic performance, has anabolic effects, has wound-healing effects, and is immuno-enhancing.
Structure
Thumb
Synonyms
ValueSource
(S)-2,5-DiaminopentanoateChEBI
(S)-2,5-Diaminopentanoic acidChEBI
(S)-2,5-Diaminovaleric acidChEBI
(S)-alpha,delta-Diaminovaleric acidChEBI
(S)-OrnithineChEBI
(S)-2,5-DiaminovalerateGenerator
(S)-a,delta-DiaminovalerateGenerator
(S)-a,delta-Diaminovaleric acidGenerator
(S)-alpha,delta-DiaminovalerateGenerator
(S)-Α,δ-diaminovalerateGenerator
(S)-Α,δ-diaminovaleric acidGenerator
(S)-a,Δ-diaminovalerateHMDB
(S)-a,Δ-diaminovaleric acidHMDB
(+)-S-OrnithineHMDB
(S)-a,D-DiaminovalerateHMDB
(S)-a,D-Diaminovaleric acidHMDB
5-Amino-L-norvalineHMDB
L-(-)-OrnithineHMDB
L-OrnithineHMDB
2,5-Diaminopentanoic acidHMDB
Ornithine dihydrochloride, (L)-isomerHMDB
Ornithine hydrochloride, (D)-isomerHMDB
Ornithine, (D)-isomerHMDB
Ornithine, (L)-isomerHMDB
2,5 Diaminopentanoic acidHMDB
Ornithine monoacetate, (L)-isomerHMDB
Ornithine monohydrochloride, (D)-isomerHMDB
Ornithine monohydrochloride, (DL)-isomerHMDB
Ornithine phosphate (1:1), (L)-isomerHMDB
Ornithine sulfate (1:1), (L)-isomerHMDB
Ornithine hydrochloride, (DL)-isomerHMDB
Ornithine hydrochloride, (L)-isomerHMDB
Ornithine monohydrobromide, (L)-isomerHMDB
Ornithine, (DL)-isomerHMDB
Chemical FormulaC5H12N2O2
Average Mass132.1610 Da
Monoisotopic Mass132.08988 Da
IUPAC Name(2S)-2,5-diaminopentanoic acid
Traditional Nameornithine
CAS Registry Number3184-13-2
SMILES
NCCC[C@H](N)C(O)=O
InChI Identifier
InChI=1S/C5H12N2O2/c6-3-1-2-4(7)5(8)9/h4H,1-3,6-7H2,(H,8,9)/t4-/m0/s1
InChI KeyAHLPHDHHMVZTML-BYPYZUCNSA-N
Spectra
Spectrum TypeDescriptionDepositor IDDeposition DateView
1D NMR1H NMR Spectrum (1D, 500 MHz, H2O, experimental)Wishart Lab2021-06-20View Spectrum
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental)Wishart Lab2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 400 MHz, H2O, simulated)Varshavi.d262021-07-25View Spectrum
1D NMR1H NMR Spectrum (1D, 700 MHz, H2O, simulated)Ahselim2022-02-06View Spectrum
1D NMR1H NMR Spectrum (1D, 700 MHz, H2O, experimental)Ahselim2022-02-06View Spectrum
Species
Species of Origin
Species NameSourceReference
Abelmoschus esculentus
Actinidia chinensis
Agaricus bisporus
Agave
Allium ampeloprasum
Allium ascalonicum
Allium cepa
Allium cepa L.
Allium fistulosum
Allium sativumFooDB
Allium schoenoprasum
Allium tuberosum
Aloysia triphylla
Amaranthus
Amelanchier alnifolia
Anacardium occidentale
Ananas comosus
Anas platyrhynchos
Anatidae
Anethum graveolens
Angelica keiskei
Annona cherimola
Annona muricata
Annona reticulata
Annona squamosaFooDB
Anser anser
Anthriscus cerefolium
Apium graveolens
Apium graveolens var. dulce
Apium graveolens var. rapaceum
Apium graveolens var. secalinum
Arabidopsis thalianaPlant
Arachis hypogaea
Arctium lappa
Armoracia rusticana
Artemisia dracunculus
Artemisia vulgaris
Artocarpus altilis
Artocarpus heterophyllus
Asparagus officinalis
Attalea speciosa
Auricularia auricula-judae
Auricularia polytricha
Avena sativa L.
Averrhoa carambola
Basella alba
Benincasa hispida
Bertholletia excelsa
Beta vulgaris
Beta vulgaris ssp. cicla
Bison bison
Borago officinalis
Bos taurus
Bos taurus X Bison bison
Brassica alboglabra
Brassica juncea
Brassica napus
Brassica napus var. napus
Brassica oleracea
Brassica oleracea var. botrytis
Brassica oleracea var. capitata
Brassica oleracea var. gemmifera
Brassica oleracea var. gongylodes
Brassica oleracea var. italica
Brassica oleracea var. sabauda
Brassica oleracea var. viridis
Brassica rapa
Brassica rapa ssp. chinensis
Brassica rapa var. pekinensis
Brassica rapa var. rapa
Brassica ruvo
Brosimum alicastrum
Bubalus bubalis
Byrsonima crassifolia
Cajanus cajan
Canarium ovatum
Cannabis sativaCannabisDB
      Not Available
Cantharellus cibarius
Capparis spinosa
Capra aegagrus hircus
Capsicum annuum
Capsicum annuum L.
Capsicum annuum var. annuum
Capsicum chinense
Capsicum pubescens
Carica papaya L.
Carissa macrocarpa
Carthamus tinctorius
Carum carvi
Carya
Carya illinoinensis
Castanea
Castanea crenata
Castanea mollissima
Castanea sativa
Ceratonia siliqua
Cervidae
Cervus canadensis
Chamaemelum nobile
Chamerion angustifolium
Chenopodium album
Chenopodium quinoa
Chrysanthemum coronarium
Cicer arietinum
Cichorium endivia
Cichorium intybus
Cinnamomum
Cinnamomum aromaticum
Cinnamomum verum
Cirsium
Citrullus lanatus
Citrus ×limon (L.) Burm. f. (pro sp.)
Citrus aurantiifolia
Citrus latifolia
Citrus limon
Citrus maxima
Citrus paradisi
Citrus reticulata
Citrus X sinensis (L.) Osbeck (pro. sp.)
Cocos nucifera
Coffea arabica L.
Coffea canephora
Colocasia esculenta
Columba
Columbidae
Corchorus olitorius
Coriandrum sativum L.
Corylus
Corylus avellana
Crateva religiosa
Crocus sativus
Cucumis melo
Cucumis metuliferus
Cucumis sativus L.
Cucurbita
Cucurbita maxima
Cucurbita moschata
Cuminum cyminum
Curcuma longa
Cydonia oblonga
Cymbopogon citratus
Cynara cardunculus
Cynara scolymus
Daucus carota
Daucus carota ssp. sativus
Dimocarpus longan
Dioscorea
Dioscorea pentaphylla
Diospyros
Diospyros kaki
Diospyros virginiana
Dromaius novaehollandiae
Durio zibethinus
Dysphania ambrosioides
Elaeis
Eleocharis dulcis
Elettaria cardamomum
Empetrum nigrum
Equus caballus
Eragrostis tef
Eriobotrya japonica
Eruca vesicaria subsp. Sativa
Escherichia coliBacteria
Eugenia javanica
Eugenia uniflora
Eutrema japonicum
Fagopyrum esculentum
Fagopyrum tataricum
Fagus
Feijoa sellowiana
Ficus carica
Flammulina velutipes
Foeniculum vulgare
Fragaria x ananassa
Gallus gallus
Garcinia mangostana
Gaylussacia baccata
Ginkgo biloba
Glycine max
Gossypium
Grifola frondosa
Hedysarum alpinum
Helianthus annuus L.
Helianthus tuberosus
Hibiscus sabbariffa
Hippophae rhamnoides
Homo sapiens (Serum)Animalia
Homo sapiens (Urine)Animalia
Hordeum vulgare
Hyssopus officinalis L.
Illicium verum
Ipomoea aquatica
Ipomoea batatas
Juglans
Juglans ailanthifolia
Juglans cinerea
Juglans nigra L.
Juglans regia
Lablab purpureus
Lactuca sativa
Lagenaria siceraria
Lagopus muta
Lathyrus sativus
Laurus nobilis L.
Lens culinaris
Lentinus edodesFooDB
Lepidium sativum
Leporidae
Lepus timidus
Levisticum officinale
Linum usitatissimum
Litchi chinensis
Luffa aegyptiaca
Lupinus
Lupinus albus
Macadamia
Macadamia tetraphylla
Malpighia emarginata
Malus
Malus pumila
Mammea americana
Mangifera indica
Manihot esculenta
Manilkara zapota
Maranta arundinacea
Matricaria recutita
Matteuccia struthiopteris
Medicago sativa
Melanitta fusca
Meleagris gallopavo
Melissa officinalis L.
Mentha
Mentha aquatica
Mentha arvensis
Mentha spicata
Mentha x piperita
Mespilus germanica
Metroxylon sagu
Momordica charantiaFooDB
Morchellaceae
Morella rubra
Moringa oleifera
Morus
Morus nigra
Musa acuminata
Musa x paradisiaca
Myrica
Myristica fragrans
Nelumbo
Nelumbo nucifera
Nephelium lappaceum
Nicotiana tabacum (L.)Plant
Numida meleagris
Nuphar lutea
Ocimum basilicum
Odocoileus
Oenothera biennis
Olea europaea
Opuntia
Opuntia cochenillifera
Opuntia macrorhiza
Origanum majorana
Origanum onites
Origanum vulgare
Origanum X majoricum
Oryctolagus
Oryza rufipogon
Oryza sativa
Ovis aries
Pachyrhizus erosus
Panax ginseng
Pangium edule
Panicum miliaceum
Paraburkholderia phymatum-
Passiflora edulis
Pastinaca sativa
Pediomelum esculentum
Perideridia oregana
Persea americana
Petasites japonicus
Petroselinum crispum
Phaseolus coccineus
Phaseolus lunatus
Phaseolus vulgaris
Phasianidae
Phasianus colchicus
Phoenix dactylifera
Photinia melanocarpa
Phyllostachys edulis
Physalis
Physalis philadelphica var. immaculata
Phytolacca americana
Pimenta dioica
Pimpinella anisum
Pinus
Pinus edulis
Piper nigrum L.
Pistacia vera
Pisum sativum
Pleurotus ostreatus
Polygonum alpinum
Portulaca oleracea
Pouteria sapota
Prunus armeniaca
Prunus avium
Prunus avium L.
Prunus cerasus
Prunus domestica
Prunus dulcis
Prunus persica
Prunus persica var. nucipersica
Prunus persica var. persica
Prunus tomentosa
Prunus virginiana
Psidium cattleianum
Psidium guajava
Psophocarpus tetragonolobus
Punica granatum
Pyrus communis
Pyrus pyrifolia
Quercus
Raphanus sativus
Raphanus sativus var. longipinnatus
Raphanus sativus var. sativus
Rheum rhabarbarum
Ribes aureum
Ribes glandulosum
Ribes nigrum
Ribes rubrum
Ribes uva-crispa
Rosa
Rubus arcticus
Rubus chamaemorus
Rubus idaeus
Rubus occidentalis
Rubus spectabilis
Rumex
Rumex acetosa
Rumex articus
Sagittaria latifolia
Salix pulchra
Salvia elegans
Salvia hispanica
Salvia officinalis
Salvia rosmarinus
Sambucus nigra
Sambucus nigra L.
Satureja hortensis L.
Satureja montana
Scorzonera hispanica
Secale cereale
Sechium edule
Sesamum indicum
Sesbania bispinosa
Sinapis alba
Sisymbrium
Solanum lycopersicum
Solanum lycopersicum var. cerasiforme
Solanum lycopersicum var. lycopersicum
Solanum melongena
Solanum quitoense
Solanum tuberosum
Sorbus aucuparia
Sorghum bicolor
Spinacia oleracea
Struthio camelus
Sus scrofa
Sus scrofa domestica
Syzygium aromaticum
Syzygium cumini
Syzygium jambos
Tamarindus indica
Taraxacum officinale
Tetragonia tetragonioides
Thelesperma
Thymus pulegioides
Thymus vulgaris
Tilia cordata
Tilia L.
Tragopogon porrifolius
Trigonella foenum-graecum
Triticum
Triticum aestivum
Triticum durum
Triticum spelta
Triticum turanicum
Typha angustifolia
Vaccinium
Vaccinium angustifolium
Vaccinium angustifolium X Vaccinium corymbosum
Vaccinium arboreum
Vaccinium corymbosum
Vaccinium deliciosum
Vaccinium elliottii
Vaccinium macrocarpon
Vaccinium myrtilloides
Vaccinium myrtillus
Vaccinium ovalifolium
Vaccinium ovatum
Vaccinium oxycoccos
Vaccinium parvifolium
Vaccinium reticulatum
Vaccinium stamineum
Vaccinium uliginosum
Vaccinium vitis-idaea
Valerianella locusta
Vanilla
Verbena officinalis
Viburnum edule
Vicia faba
Vigna aconitifolia
Vigna angularis
Vigna mungo
Vigna radiata
Vigna umbellata
Vigna unguiculata
Vigna unguiculata ssp. cylindrica
Vigna unguiculata ssp. unguiculata
Vigna unguiculata var. sesquipedalis
Vitis
Vitis aestivalis
Vitis labrusca
Vitis rotundifolia
Vitis vinifera L.
Xanthosoma sagittifolium
Zea mays L.
Zingiber officinale
Zizania
Zizania aquatica
Ziziphus zizyphus
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
StateSolid
Experimental Properties
PropertyValueReference
Melting Point140 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility620 mg/mLNot Available
LogP-4.22Sangster, J. (1993). LOGKOW- a Databank of Evaluated Octanol-Water Partition Coefficients. Sangster Research Laboratories, Montreal.
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
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
HMDB IDHMDB0000214
DrugBank IDDB00129
Phenol Explorer Compound IDNot Available
FoodDB IDFDB030969
KNApSAcK IDC00001384
Chemspider ID6026
KEGG Compound IDC00077
BioCyc IDORNITHINE
BiGG ID37976
Wikipedia LinkOrnithine
METLIN ID27
PubChem Compound6262
PDB IDNot Available
ChEBI ID15729
Good Scents IDrw1351451
References
General References
  1. Sreekumar A, Poisson LM, Rajendiran TM, Khan AP, Cao Q, Yu J, Laxman B, Mehra R, Lonigro RJ, Li Y, Nyati MK, Ahsan A, Kalyana-Sundaram S, Han B, Cao X, Byun J, Omenn GS, Ghosh D, Pennathur S, Alexander DC, Berger A, Shuster JR, Wei JT, Varambally S, Beecher C, Chinnaiyan AM: Metabolomic profiles delineate potential role for sarcosine in prostate cancer progression. Nature. 2009 Feb 12;457(7231):910-4. doi: 10.1038/nature07762. [PubMed:19212411 ]
  2. Silwood CJ, Lynch E, Claxson AW, Grootveld MC: 1H and (13)C NMR spectroscopic analysis of human saliva. J Dent Res. 2002 Jun;81(6):422-7. [PubMed:12097436 ]
  3. Nicholson JK, O'Flynn MP, Sadler PJ, Macleod AF, Juul SM, Sonksen PH: Proton-nuclear-magnetic-resonance studies of serum, plasma and urine from fasting normal and diabetic subjects. Biochem J. 1984 Jan 15;217(2):365-75. [PubMed:6696735 ]
  4. Engelborghs S, Marescau B, De Deyn PP: Amino acids and biogenic amines in cerebrospinal fluid of patients with Parkinson's disease. Neurochem Res. 2003 Aug;28(8):1145-50. [PubMed:12834252 ]
  5. Hagenfeldt L, Bjerkenstedt L, Edman G, Sedvall G, Wiesel FA: Amino acids in plasma and CSF and monoamine metabolites in CSF: interrelationship in healthy subjects. J Neurochem. 1984 Mar;42(3):833-7. [PubMed:6198473 ]
  6. Peng CT, Wu KH, Lan SJ, Tsai JJ, Tsai FJ, Tsai CH: Amino acid concentrations in cerebrospinal fluid in children with acute lymphoblastic leukemia undergoing chemotherapy. Eur J Cancer. 2005 May;41(8):1158-63. Epub 2005 Apr 14. [PubMed:15911239 ]
  7. Cynober LA: Plasma amino acid levels with a note on membrane transport: characteristics, regulation, and metabolic significance. Nutrition. 2002 Sep;18(9):761-6. [PubMed:12297216 ]
  8. Peters T, Thaete C, Wolf S, Popp A, Sedlmeier R, Grosse J, Nehls MC, Russ A, Schlueter V: A mouse model for cystinuria type I. Hum Mol Genet. 2003 Sep 1;12(17):2109-20. [PubMed:12923163 ]
  9. Mayer UM: [Hyperornithinaemia in patients with retinal dystrophy]. Ophthalmologe. 2003 Jan;100(1):55-61. [PubMed:12557027 ]
  10. Gray RG, Green A, Hall S, McKeown C: Prenatal exclusion of the HHH syndrome. Prenat Diagn. 1995 May;15(5):474-6. [PubMed:7644438 ]
  11. Jensen TG, Sullivan DM, Morgan RA, Taichman LB, Nussenblatt RB, Blaese RM, Csaky KG: Retrovirus-mediated gene transfer of ornithine-delta-aminotransferase into keratinocytes from gyrate atrophy patients. Hum Gene Ther. 1997 Nov 20;8(17):2125-32. [PubMed:9414260 ]
  12. Sell DR, Monnier VM: Ornithine is a novel amino acid and a marker of arginine damage by oxoaldehydes in senescent proteins. Ann N Y Acad Sci. 2005 Jun;1043:118-28. [PubMed:16037230 ]
  13. Stadler S, Gempel K, Bieger I, Pontz BF, Gerbitz KD, Bauer MF, Hofmann S: Detection of neonatal argininosuccinate lyase deficiency by serum tandem mass spectrometry. J Inherit Metab Dis. 2001 Jun;24(3):370-8. [PubMed:11486903 ]
  14. Gokmen SS, Aygit AC, Ayhan MS, Yorulmaz F, Gulen S: Significance of arginase and ornithine in malignant tumors of the human skin. J Lab Clin Med. 2001 May;137(5):340-4. [PubMed:11329531 ]
  15. Morizono H, Woolston JE, Colombini M, Tuchman M: The use of yeast mitochondria to study the properties of wild-type and mutant human mitochondrial ornithine transporter. Mol Genet Metab. 2005 Dec;86(4):431-40. Epub 2005 Oct 26. [PubMed:16256388 ]
  16. Ansone L, Briviba M, Silamikelis I, Terentjeva A, Perkons I, Birzniece L, Rovite V, Rozentale B, Viksna L, Kolesova O, Klavins K, Klovins J: Amino Acid Metabolism is Significantly Altered at the Time of Admission in Hospital for Severe COVID-19 Patients: Findings from Longitudinal Targeted Metabolomics Analysis. Microbiol Spectr. 2021 Dec 22;9(3):e0033821. doi: 10.1128/spectrum.00338-21. Epub 2021 Dec 8. [PubMed:34878333 ]