1. pyridine-2,3-carboxylate
2. 3,4-Pyridinedicarboxylic acid
3. Pyridine-3,4-dicarboxylic acid
4. 2,3-pyridinedicarboxylic acid
5. 2,3-pyridinedicarboxylate
6. Pyridine-2,3-dicarboxylate
7. Pyridine-2,3-dicarboxylic acid
8. Quinolinate
9. Pyridin-2,3-dicarbonsaeure
10. Quinolinic acid

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• Cytoplasm (Predicted from LogP)

• Blood
• Cerebrospinal Fluid
• Urine

• 248310 (Malaria)

1. Wolfensberger M, Amsler U, Cuenod M, Foster AC, Whetsell WO Jr, Schwarcz R: Identification of quinolinic acid in rat and human brain tissue. Neurosci Lett. 1983 Nov 11;41(3):247-52. [PubMed ]
2. Heyes MP, Achim CL, Wiley CA, Major EO, Saito K, Markey SP: Human microglia convert l-tryptophan into the neurotoxin quinolinic acid. Biochem J. 1996 Dec 1;320 ( Pt 2):595-7. [PubMed ]
3. Kurup RK, Kurup PA: Hypothalamic digoxin, hemispheric chemical dominance, and Alzheimer's disease. Int J Neurosci. 2003 Mar;113(3):361-81. [PubMed ]
4. Guneral F, Bachmann C: Age-related reference values for urinary organic acids in a healthy Turkish pediatric population. Clin Chem. 1994 Jun;40(6):862-6. [PubMed ]
5. Heyes MP, Wyler AR, Devinsky O, Yergey JA, Markey SP, Nadi NS: Quinolinic acid concentrations in brain and cerebrospinal fluid of patients with intractable complex partial seizures. Epilepsia. 1990 Mar-Apr;31(2):172-7. [PubMed ]
6. Kurup RK, Kurup PA: Central role of hypothalamic digoxin in conscious perception, neuroimmunoendocrine integration, and coordination of cellular function: relation to hemispheric dominance. Int J Neurosci. 2002 Jun;112(6):705-39. [PubMed ]
7. Moroni F, Lombardi G, Carla V, Lal S, Etienne P, Nair NP: Increase in the content of quinolinic acid in cerebrospinal fluid and frontal cortex of patients with hepatic failure. J Neurochem. 1986 Dec;47(6):1667-71. [PubMed ]
8. Heyes MP, Saito K, Lackner A, Wiley CA, Achim CL, Markey SP: Sources of the neurotoxin quinolinic acid in the brain of HIV-1-infected patients and retrovirus-infected macaques. FASEB J. 1998 Jul;12(10):881-96. [PubMed ]
9. Basile AS, Saito K, al-Mardini H, Record CO, Hughes RD, Harrison P, Williams R, Li Y, Heyes MP: The relationship between plasma and brain quinolinic acid levels and the severity of hepatic encephalopathy. Gastroenterology. 1995 Mar;108(3):818-23. [PubMed ]
10. Power C, Johnson RT: HIV-1 associated dementia: clinical features and pathogenesis. Can J Neurol Sci. 1995 May;22(2):92-100. [PubMed ]
11. Shoemaker JD, Elliott WH: Automated screening of urine samples for carbohydrates, organic and amino acids after treatment with urease. J Chromatogr. 1991 Jan 2;562(1-2):125-38. [PubMed ]
12. Medana IM, Hien TT, Day NP, Phu NH, Mai NT, Chu'ong LV, Chau TT, Taylor A, Salahifar H, Stocker R, Smythe G, Turner GD, Farrar J, White NJ, Hunt NH: The clinical significance of cerebrospinal fluid levels of kynurenine pathway metabolites and lactate in severe malaria. J Infect Dis. 2002 Mar 1;185(5):650-6. Epub 2002 Feb 14. [PubMed ]
13. Smythe GA, Poljak A, Bustamante S, Braga O, Maxwell A, Grant R, Sachdev P: ECNI GC-MS analysis of picolinic and quinolinic acids and their amides in human plasma, CSF, and brain tissue. Adv Exp Med Biol. 2003;527:705-12. [PubMed ]
14. Ellison DW, Beal MF, Mazurek MF, Malloy JR, Bird ED, Martin JB: Amino acid neurotransmitter abnormalities in Huntington's disease and the quinolinic acid animal model of Huntington's disease. Brain. 1987 Dec;110 ( Pt 6):1657-73. [PubMed ]
15. Saito K, Markey SP, Heyes MP: Effects of immune activation on quinolinic acid and neuroactive kynurenines in the mouse. Neuroscience. 1992 Nov;51(1):25-39. [PubMed ]
16. Heyes MP, Rubinow D, Lane C, Markey SP: Cerebrospinal fluid quinolinic acid concentrations are increased in acquired immune deficiency syndrome. Ann Neurol. 1989 Aug;26(2):275-7. [PubMed ]
17. Heyes MP, Ellis RJ, Ryan L, Childers ME, Grant I, Wolfson T, Archibald S, Jernigan TL: Elevated cerebrospinal fluid quinolinic acid levels are associated with region-specific cerebral volume loss in HIV infection. Brain. 2001 May;124(Pt 5):1033-42. [PubMed ]
18. Medana IM, Day NP, Salahifar-Sabet H, Stocker R, Smythe G, Bwanaisa L, Njobvu A, Kayira K, Turner GD, Taylor TE, Hunt NH: Metabolites of the kynurenine pathway of tryptophan metabolism in the cerebrospinal fluid of Malawian children with malaria. J Infect Dis. 2003 Sep 15;188(6):844-9. Epub 2003 Sep 9. [PubMed ]
19. Heyes MP, Saito K, Milstien S, Schiff SJ: Quinolinic acid in tumors, hemorrhage and bacterial infections of the central nervous system in children. J Neurol Sci. 1995 Nov;133(1-2):112-8. [PubMed ]
20. Heyes MP, Saito K, Crowley JS, Davis LE, Demitrack MA, Der M, Dilling LA, Elia J, Kruesi MJ, Lackner A, et al.: Quinolinic acid and kynurenine pathway metabolism in inflammatory and non-inflammatory neurological disease. Brain. 1992 Oct;115 ( Pt 5):1249-73. [PubMed ]

1. Nicotinate-nucleotide pyrophosphorylase [carboxylating]
2. Kynurenine 3-monooxygenase

1. Quinolinate phosphoribosyltransferase [decarboxylating]
2. QAPRTase
3. QPRTase

MDAEGLALLLPPVTLAALVDSWLREDCPGLNYAALVSGAGPSQAALWAKSPGVLAGQPFF
DAIFTQLNCQVSWFLPEGSKLVPVARVAEVRGPAHCLLLGERVALNTLARCSGIASAAAA
AVEAARGAGWTGHVAGTRKTTPGFRLVEKYGLLVGGAASHRYDLGGLVMVKDNHVVAAGG
VEKAVRAARQAADFTLKVEVECSSLQEAVQAAEAGADLVLLDNFKPEELHPTATVLKAQF
PSVAVEASGGITLDNLPQFCGPHIDVISMGMLTQAAPALDFSLKLFAKEVAPVPKIH

• Nicotinate and Nicotinamide Metabolism (map00760 )

• nicotinate D-ribonucleotide + diphosphate + CO2 = pyridine-2,3-dicarboxylate + 5-phospho-alpha-D-ribose 1-diphosphate [RN:R03348]

• QRPTase_C (PF01729 )
• QRPTase_N (PF02749 )

• None

• None

ATGGACGCTGAAGGCCTGGCGCTGCTGCTGCCGCCCGTCACCCTGGCAGCCCTGGTGGAC
AGCTGGCTCCGAGAGGACTGCCCAGGGCTCAACTACGCAGCCTTGGTCAGCGGGGCAGGC
CCCTCGCAGGCGGCGCTGTGGGCCAAATCCCCTGGGATACTGGCAGGGCAGCCTTTCTTC
GATGCCATATTTACCCAACTCAACTGCCAAGTCTCCTGGTTCCTCCCCGAGGGATCGAAG
CTGGTGCCGGTGGCCAGAGTGGCCGAGGTCCGGGGCCCTGCCCACTGCCTGCTGCTGGGG
GAACGGGTGGCCCTCAACACGCTGGCCCGCTGCAGTGGCATTGCCAGTGCTGCCGCCGCT
GCAGTGGAGGCCGCCAGGGGGGCCGGCTGGACTGGGCACGTGGCAGGCACGAGGAAGACC
ACGCCAGGCTTCCGGCTGGTGGAGAAGTATGGGCTCCTGGTGGGCGGGGCCGCCTCGCAC
CGCTACGACCTGGGAGGGCTGGTGATGGTGAAGGATAACCATGTGGTGGCCGCCGGTGGC
GTGGAGAAGGCGGTGCGGGCGGCCAGACAGGCGGCTGACTTCGCTCTGAAGGTGGAAGTG
GAATGCAGCAGCCTGCAGGAGGCCGTGCAGGCAGCTGAGGCTGGTGCCGACCTTGTCCTG
CTGGACAACTTCAAGCCAGAGGAGCTGCACCCCACGGCCACCGTGCTGAAGGCCCAGTTC
CCGAGTGTGGCTGTGGAAGCCAGTGGGGGCATCACCCTGGACAACCTCCCCCAGTTCTGC
GGGCCGCACATAGACGTCATCTCCATGGGGATGCTGACCCAGGCGGCCCCAGCCCTTGAT
TTCTCCCTCAAGCTGTTTGCCAAAGAGGTGGCTCCAGTGCCCAAAATCCACTAG

1. Fukuoka SI, Nyaruhucha CM, Shibata K: Characterization and functional expression of the cDNA encoding human brain quinolinate phosphoribosyltransferase. Biochim Biophys Acta. 1998 Jan 21;1395(2):192-201. [PubMed ]
2. Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). Genome Res. 2004 Oct;14(10B):2121-7. [PubMed ]
3. Liu H, Woznica K, Catton G, Crawford A, Botting N, Naismith JH: Structural and kinetic characterization of quinolinate phosphoribosyltransferase (hQPRTase) from homo sapiens. J Mol Biol. 2007 Oct 26;373(3):755-63. Epub 2007 Aug 24. [PubMed ]

1. Kynurenine 3-hydroxylase

MDSSVIQRKKVAVIGGGLVGSLQACFLAKRNFQIDVYEAREDTRVATFTRGRSINLALSH
RGRQALKAVGLEDQIVSQGIPMRARMIHSLSGKKSAIPYGTKSQYILSVSRENLNKDLLT
AAEKYPNVKMHFNHRLLKCNPEEGMITVLGSDKVPKDVTCDLIVGCDGAYSTVRSHLMKK
PRFDYSQQYIPHGYMELTIPPKNGDYAMEPNYLHIWPRNTFMMIALPNMNKSFTCTLFMP
FEEFEKLLTSNDVVDFFQKYFPDAIPLIGEKLLVQDFFLLPAQPMISVKCSSFHFKSHCV
LLGDAAHAIVPFFGQGMNAGFEDCLVFDELMDKFSNDLSLCLPVFSRLRIPDDHAISDLS
MYNYIEMRAHVNSSWFIFQKNMERFLHAIMPSTFIPLYTMVTFSRIRYHEAVQRWHWQKK
VINKGLFFLGSLIAISSTYLLIHYMSPRSFLRLRRPWNWIAHFRNTTCFPAKAVDSLEQI
SNLISR

• Tryptophan Metabolism (map00380 )

• L-kynurenine + NADPH + H+ + O2 = 3-hydroxy-L-kynurenine + NADP+ + H2O [RN:R01960]

• FAD_binding_3 (PF01494 )

• None

• 385-404 425-445

ATGGACTCATCTGTCATTCAAAGGAAAAAAGTAGCTGTCATTGGTGGTGGCTTGGTTGGC
TCATTACAAGCATGCTTTCTTGCAAAGAGGAATTTCCAGATTGATGTATATGAAGCTAGG
GAAGATACTCGAGTGGCTACCTTCACACGTGGAAGAAGCATTAACTTAGCCCTTTCTCAT
AGAGGACGACAAGCCTTGAAAGCTGTTGGCCTGGAAGATCAGATTGTATCCCAAGGTATT
CCCATGAGAGCAAGAATGATCCACTCTCTTTCAGGAAAAAAGTCTGCAATTCCCTATGGG
ACAAAGTCTCAGTATATTCTTTCTGTAAGCAGAGAAAATCTAAACAAGGATCTATTGACT
GCTGCTGAGAAATACCCCAATGTGAAAATGCACTTTAACCACAGGCTGTTGAAATGTAAT
CCAGAGGAAGGAATGATCACAGTGCTTGGATCTGACAAAGTTCCCAAAGATGTCACTTGT
GACCTCATTGTAGGATGTGATGGAGCCTATTCAACTGTCAGATCTCACCTGATGAAGAAA
CCTCGCTTTGATTACAGTCAGCAGTACATTCCTCATGGGTACATGGAGTTGACTATTCCA
CCTAAGAACGGAGATTATGCCATGGAACCTAATTATCTGCATATTTGGCCTAGAAATACC
TTTATGATGATTGCACTTCCTAACATGAACAAATCATTCACATGTACTTTGTTCATGCCC
TTTGAAGAGTTTGAAAAACTTCTAACCAGTAATGATGTGGTAGATTTCTTCCAGAAATAC
TTTCCGGATGCCATCCCTCTAATTGGAGAGAAACTCCTAGTGCAAGATTTCTTCCTGTTG
CCTGCCCAGCCCATGATATCTGTAAAGTGCTCTTCATTTCACTTTAAATCTCACTGTGTA
CTGCTGGGAGATGCAGCTCATGCTATAGTGCCGTTTTTTGGGCAAGGAATGAATGCGGGC
TTTGAAGACTGCTTGGTATTTGATGAGTTAATGGATAAATTCAGTAACGACCTTAGTTTG
TGTCTTCCTGTGTTCTCAAGATTGAGAATCCCAGATGATCACGCGATTTCAGACCTATCC
ATGTACAATTACATAGAGATGCGAGCACATGTCAACTCAAGCTGGTTCATTTTTCAGAAG
AACATGGAGAGATTTCTTCATGCGATTATGCCATCGACCTTTATCCCTCTCTATACAATG
GTCACTTTTTCCAGAATAAGATACCATGAGGCTGTGCAGCGTTGGCATTGGCAAAAAAAG
GTGATAAACAAAGGACTCTTTTTCTTGGGATCACTGATAGCCATCAGCAGTACCTACCTA
CTTATACACTACATGTCACCACGATCTTTCCTCTGCTTGAGAAGACCATGGAACTGGATA
GCTCACTTCCGGAATACAACATGTTTCCCCGCAAAGGCCGTGGACTCCCTAGAACAAATT
TCCAATCTCATTAGCAGGTGA

1. Alberati-Giani D, Cesura AM, Broger C, Warren WD, Rover S, Malherbe P: Cloning and functional expression of human kynurenine 3-monooxygenase. FEBS Lett. 1997 Jun 30;410(2-3):407-12. [PubMed ]
2. Breton J, Avanzi N, Magagnin S, Covini N, Magistrelli G, Cozzi L, Isacchi A: Functional characterization and mechanism of action of recombinant human kynurenine 3-hydroxylase. Eur J Biochem. 2000 Feb;267(4):1092-9. [PubMed ]
3. Gregory SG, Barlow KF, McLay KE, Kaul R, Swarbreck D, Dunham A, Scott CE, Howe KL, Woodfine K, Spencer CC, Jones MC, Gillson C, Searle S, Zhou Y, Kokocinski F, McDonald L, Evans R, Phillips K, Atkinson A, Cooper R, Jones C, Hall RE, Andrews TD, Lloyd C, Ainscough R, Almeida JP, Ambrose KD, Anderson F, Andrew RW, Ashwell RI, Aubin K, Babbage AK, Bagguley CL, Bailey J, Beasley H, Bethel G, Bird CP, Bray-Allen S, Brown JY, Brown AJ, Buckley D, Burton J, Bye J, Carder C, Chapman JC, Clark SY, Clarke G, Clee C, Cobley V, Collier RE, Corby N, Coville GJ, Davies J, Deadman R, Dunn M, Earthrowl M, Ellington AG, Errington H, Frankish A, Frankland J, French L, Garner P, Garnett J, Gay L, Ghori MR, Gibson R, Gilby LM, Gillett W, Glithero RJ, Grafham DV, Griffiths C, Griffiths-Jones S, Grocock R, Hammond S, Harrison ES, Hart E, Haugen E, Heath PD, Holmes S, Holt K, Howden PJ, Hunt AR, Hunt SE, Hunter G, Isherwood J, James R, Johnson C, Johnson D, Joy A, Kay M, Kershaw JK, Kibukawa M, Kimberley AM, King A, Knights AJ, Lad H, Laird G, Lawlor S, Leongamornlert DA, Lloyd DM, Loveland J, Lovell J, Lush MJ, Lyne R, Martin S, Mashreghi-Mohammadi M, Matthews L, Matthews NS, McLaren S, Milne S, Mistry S, Moore MJ, Nickerson T, O'Dell CN, Oliver K, Palmeiri A, Palmer SA, Parker A, Patel D, Pearce AV, Peck AI, Pelan S, Phelps K, Phillimore BJ, Plumb R, Rajan J, Raymond C, Rouse G, Saenphimmachak C, Sehra HK, Sheridan E, Shownkeen R, Sims S, Skuce CD, Smith M, Steward C, Subramanian S, Sycamore N, Tracey A, Tromans A, Van Helmond Z, Wall M, Wallis JM, White S, Whitehead SL, Wilkinson JE, Willey DL, Williams H, Wilming L, Wray PW, Wu Z, Coulson A, Vaudin M, Sulston JE, Durbin R, Hubbard T, Wooster R, Dunham I, Carter NP, McVean G, Ross MT, Harrow J, Olson MV, Beck S, Rogers J, Bentley DR, Banerjee R, Bryant SP, Burford DC, Burrill WD, Clegg SM, Dhami P, Dovey O, Faulkner LM, Gribble SM, Langford CF, Pandian RD, Porter KM, Prigmore E: The DNA sequence and biological annotation of human chromosome 1. Nature. 2006 May 18;441(7091):315-21. [PubMed ]
4. Stone TW, Darlington LG: Endogenous kynurenines as targets for drug discovery and development. Nat Rev Drug Discov. 2002 Aug;1(8):609-20. [PubMed ]