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Kynurenine 3-monooxygenase

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Structure of the kynurenine 3-monooxygenase dimer, generated from 4J34. One monomer is depicted in cartoon format (cyan) and the second monomer is displayed in ribbon format (green). The flexible linker regions (residues 96-104) are colored red. Flavin adenine dinucleotide (FAD) is shown as spheres
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with the human kynurenine 3-monooxygenase protein. Studies have shown the beneficial effects of enzyme inhibition in these eukaryotic kynurenine 3-monooxygenase active sites, thus making this enzyme an attractive target for human drug design.
687:. Administration of potent enzyme inhibitors has demonstrated promising pharmacological results. Specifically, genetic elimination of the kynurenine 3-monooxygenase enzyme has been shown to suppress toxicity of the 443:-kynurenine, structural studies of the enzyme in yeast co-crystallized with UPF 648 reveal how the FAD cofactor and substrate are bound in the active site. Chemical similarities between UPF 648 and 667:
at the glycine site of the NMDA receptor. As a result, regulation at the kynurenine 3-monooxygenase enzyme determines the neurotoxic and neuroprotective potential of the kynurenine pathway.
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and has one FAD-binding domain as its prosthetic group. Kynurenine 3-monooxygenase contains a linker region involved in substrate binding following a second strand of an antiparallel
195: 537:-kynurenine with concomitant interconversion of NADPH to NADP. The reaction mechanism is not entirely known, but is believed to follow mechanisms related to the 1447:"The brain metabolite kynurenic acid inhibits α7 nicotinic receptor activity and increases non-α7 nicotinic receptor expression:Physiopathological implications" 214: 1146:: substrate-like inhibitors both stimulate flavin reduction and stabilize the flavin-peroxo intermediate yet result in the production of hydrogen peroxide". 295: 270: 1643:"Downregulated Kynurenine 3-Monooxygenase Gene Expression and Enzyme Activity in Schizophrenia and Genetic Association With Schizophrenia Endophenotypes" 850:
Smith, Jason R.; Jamie, Joanne F.; Guillemin, Gilles J. (February 2016). "Kynurenine-3-monooxygenase: a review of structure, mechanism, and inhibitors".
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subtype of glutamate receptors, producing excitotoxic lesions in the central nervous system of mammals. Quinolinic acid is also the bioprecursor of NAD.
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in kynurenine 3-monooxygenase-deficient patients results in a shift towards kynurenic acid production, believed to be related to cognitive deficits in
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Foucher AL, McIntosh A, Douce G, Wastling J, Tait A, Turner CM (2006). "A proteomic analysis of arsenical drug resistance in Trypanosoma brucei".
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as the oxidant. Kynurenine 3-monooxygenase catalyzes the insertion of molecular oxygen into the aromatic ring of kynurenine to produce 3-hydroxy-
2329: 2068: 376:. Kynurenine 3-monooxygenase serves as an important branch point in the kynurenine pathway and, as a result, is an attractive drug target for 819: 553:-kynurenine-FAD-hydroperoxide intermediate. This intermediate is the electrophilic source for the hydroxylation reaction, yielding a primary 655:
Inhibition of kynurenine 3-monooxygenase leads to an increase of kynurenic acid in the kynurenine pathway. This metabolite functions as an
2819: 2229: 1269:"Targeted Deletion of Kynurenine 3-Monooxygenase in Mice: A New Tool for Studying Kynurenine Pathway Metabolism in Periphery and Brain" 1229:
Thevandavakkam MA, et al. (2010). "Targeting kynurenine 3-monooxygenase (KMO). Implications for therapy in Huntington's disease".
1692:"Kynurenine 3-monooxygenase polymorphisms: relevance for kynurenic acid synthesis in patients with schizophrenia and healthy controls" 2503: 2202: 1545:
Campesan, S.; Green, E. W.; Breda, C.; Sathyasaikumar, K. V.; Muchowski, P. J.; Schwarcz, R.; Kyriacou, C. P.; Giorgini, F (2011).
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Kynurenine 3-monooxygenase is an attractive drug target for several neurodegenerative and neuroinflammatory diseases, especially
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The mechanism of kynurenine 3-monooxygenase FAD is shown in blue. The substrate, intermediate, and product are depicted in black.
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Okamoto H, Hayaishi O (1967). "Flavin adenine dinucleotide requirement for kynurenine hydroxylase of rat liver mitochondria".
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Filippini, Graziella Allegri; Costa, Carlo V. L.; Bertazzo, Antonella; International Meeting on Tryptophan Research (1998).
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Amaral, M. (2014). "Crystal Structure of kynurenine 3-monooxygenase – truncated at position 394 plus HIS tag cleaved".
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Stone, T. W.; Perkins, M. N. (1981). "Quinolinic acid: A potent endogenous excitant at amino acid receptors in CNS".
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Hoekstra, PJ; Anderson, GM; Troost, PW (2007). "Plasma kynurenine and related measures in tic disorder patients".
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Yukiko, Hirata; Takashi, Kawachi; Takashi, Sugimura (2 October 1967). "Fatty liver induced by injection of
2814: 2450: 2366: 2115: 1835:"Identification of Metabolites, Clinical Chemistry Markers and Transcripts Associated with Hepatotoxicity" 1318:
Rios, C.; Santamaria, A. (1991). "Quinolinic acid is a potent lipid peroxidant in rat brain homogenates".
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Hilmas, C.; Pereira, E. F.; Alkondon, M.; Rassoulpour, A.; Schwarcz, R.; Albuquerque, E. X. (2001).
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While no scientific literature reports a crystal image of a kynurenine 3-monooxygenase complex with
155: 2804: 2613: 2347: 1100:"Functional characterization and mechanism of action of recombinant human kynurenine 3-hydroxylase" 656: 285: 79: 57: 951:
Amaral, M; Levy, C; Heyes, DJ; Lafite, P; Outeiro, TF; Giorgini, F; Leys, D; Scrutton, NS (2013).
388:. Currently, most research on the kynurenine 3-monooxygenase enzyme has been focused primarily on 2546: 2110: 1958: 1815: 1623: 1343: 825: 606: 397: 348: 2256: 2144: 2034: 1987: 1950: 1915: 1874: 1807: 1772: 1721: 1672: 1615: 1580: 1527: 1478: 1427: 1378: 1335: 1300: 1246: 1211: 1163: 1121: 1080: 1031: 990: 916: 875: 867: 815: 713: 429:
C-terminus acts as the mitochondrial anchoring domain and participates in enzymatic activity.
385: 381: 255: 146: 619:-Kynurenine is an important branch point of this metabolic pathway, being converted into the 2592: 2587: 2561: 2489: 2024: 1979: 1942: 1907: 1864: 1854: 1799: 1762: 1752: 1711: 1703: 1662: 1654: 1607: 1570: 1562: 1517: 1509: 1468: 1458: 1417: 1409: 1370: 1327: 1290: 1280: 1238: 1201: 1155: 1111: 1070: 1062: 1023: 980: 972: 908: 859: 807: 763: 717: 634: 115: 2639: 2623: 2536: 2234: 788: 645: 547:-kynurenine binds, NADPH reduces FAD and leaves as NADP. Oxygen then binds and creates an 414: 314: 91: 563:-kynurenine in complex with the enzyme (E Fl HOH-P). Dissociation of 3-hydroxy- 513:
also form polar contacts with the carboxylate in the amino acid moiety on the substrate.
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is believed to be the oxygen-binding site above the re-side of the FAD prosthetic group.
50: 1850: 968: 732:. Kynurenine-3-monooxygenase deficiency is associated with disorders of the brain (e.g. 2788: 2677: 2618: 2460: 2440: 2435: 2077: 1869: 1834: 1767: 1740: 1716: 1691: 1667: 1642: 1575: 1546: 1522: 1497: 1473: 1463: 1446: 1422: 1397: 1295: 1268: 1075: 1050: 985: 952: 729: 725: 630: 580: 352: 190: 2029: 2000: 1658: 1206: 1185: 1008:
Hirai KH, et al. (2010). "Dual role of the carboxyl-terminal region of pig liver
170: 2798: 2582: 2541: 1983: 1911: 1374: 1116: 1099: 1014:-kynurenine 3-monooxygenase: mitochondrial-targeting signal and enzymatic activity". 893:
Horn, U.; Ullrich, V.; Staudinger, H.J (1971). "Purification and characterization of
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MĂĽller, N; Myint, AM; Schwarz, MJ (2010). "Inflammatory Biomarkers and Depression".
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Giorgini, F.; Guidetti, P.; Nguyen, Q.; Bennett, S. C.; Muchowski, P. J. (2005).
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Recent advances in tryptophan research : tryptophan and serotonin pathways
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form of the product and the C4a-hydroxy-FAD. Tautomerization yields 3-hydroxy-
505:-kynurenine carbonyl group, as well as on the hydrogen on the FAD N3 atom. Arg 426: 418: 377: 310: 261: 232: 1757: 871: 495:) positioned around the substrate's aromatic benzene moiety. A conserved Gln 2729: 2703: 2380: 2343: 2287: 2081: 1285: 705: 389: 251: 2038: 1954: 1946: 1878: 1811: 1776: 1725: 1676: 1619: 1584: 1531: 1482: 1431: 1304: 1250: 1167: 1125: 1084: 1035: 994: 879: 1991: 1919: 1382: 1339: 920: 767: 2159: 1215: 243: 103: 1739:
Campbell, Brian M.; Charych, Erik; Lee, Anna W.; Möller, Thomas (2014).
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Crozier-Reabe, KR; et al. (2008). "Kynurenine 3-monooxygenase from
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Kynurenine 3-monooxygenase deficiency, which can be caused by genetic
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Buness A, Roth A, Herrmann A, Schmitz O, Kamp H, et al. (2014).
1398:"Kynurenines in the mammalian brain. When physiology meets pathology" 356: 278: 247: 202: 98: 86: 74: 1413: 1066: 1513: 720:. Recent research suggests that hyperphysiologic concentrations of 2716: 2444: 2179: 2137: 2130: 2125: 2120: 644:
Kynurenine 3-monooxygenase regulates the downstream production of
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Each monomer contains a conserved hydrophobic pocket (residues Leu
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Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism
1741:"Kynurenines in CNS disease: regulation byinflammatory cytokines" 2224: 2212: 2207: 2197: 2192: 2175: 2149: 1641:
Wonodi I, Colin-Stine O, Sathyasaikumar KV, et al. (2011).
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Schwarcz, R.; Bruno, J. P.; Muchowski, P. J.; Wu, H. Q. (2012).
806:. Advances in Experimental Medicine and Biology. Vol. 398. 629:-kynurenine via kynurenine 3-monooxygenase, the neuroprotectant 110: 2485: 2050: 648:, which can generate reactive free radicals and activates the 1267:
Giorgini F, Huang SY, Sathyasaikumar KV, et al. (2013).
449:-kynurenine suggest that the substrate binds adjacent to the 396:, both of which have been demonstrated to have high sequence 1186:"Flavin-oxygen derivatives involved in the hydroxylation of 309:
Kynurenine 3-monooxygenase is the expression product of the
953:"Structural basis of kynurenine 3-monooxygenase inhibition" 2481: 899:-kynurenine 3-hydroxylase (EC 1.14.1.2.) from rat liver". 757: 755: 753: 499:
polar residue is also involved in hydrogen bonding on the
324:-kynurenine, NADPH:oxygen oxidoreductase (3-hydroxylating) 2001:"Studies on oxygenases; enzymatic formation of 3-hydroxy- 1547:"The kynurenine pathway modulates neurodegeneration in a 609:. The kynurenine pathway is responsible for over 95% of 593:
Kynurenine 3-monooxygenase catalyzes the conversion of
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of the flavoprotein. A loop containing the residues Pro
605:-kynurenine, an important bioactive metabolite in the 355:, to be specific, those acting on paired donors, with 2772: 1137: 1135: 421:, a six-stranded antiparallel β-sheet domain, and an 2668: 2632: 2601: 2570: 2519: 2425: 2397: 2375: 2338: 2306: 2270: 2170: 2097: 1690:Holtze M, Saetre P, Engberg G, et al. (2012). 213: 201: 189: 184: 164: 145: 133: 121: 109: 97: 85: 73: 68: 56: 44: 39: 21: 1262: 1260: 1179: 1177: 946: 944: 942: 940: 938: 936: 934: 932: 930: 2497: 2062: 845: 843: 841: 839: 8: 2504: 2490: 2482: 2069: 2055: 2047: 633:through kynurenine amino transferases, or 181: 27: 2028: 1868: 1858: 1766: 1756: 1715: 1666: 1574: 1521: 1472: 1462: 1421: 1294: 1284: 1205: 1115: 1074: 984: 521:Kynurenine-3-monooxygenase catalyzes the 1999:Saito Y, Hayaishi O, Rothberg S (1957). 2779: 749: 708:, or both, leads to an accumulation of 351:. This enzyme belongs to the family of 784: 773: 18: 712:and to a shift within the tryptophan 573:O leads to the free enzyme (E Fl 7: 2262:24-hydroxycholesterol 7α-hydroxylase 326:. Other names in common use include 1273:The Journal of Biological Chemistry 661:α7 nicotinic acetylcholine receptor 34:color-coded according to atom type. 1464:10.1523/JNEUROSCI.21-19-07463.2001 14: 1659:10.1001/archgenpsychiatry.2011.71 2782: 1231:CNS Neurol. Disord. Drug Targets 1117:10.1046/j.1432-1327.2000.01104.x 1098:Breton, J.; et al. (2000). 697:models of Huntington's disease. 409:Kynurenine 3-monooxygenase is a 2242:Cholesterol 7 alpha-hydroxylase 2188:Flavin-containing monooxygenase 901:Hoppe-Seyler's Z. Physiol. Chem 539:flavin-dependent monooxygenases 1551:model of Huntington's disease" 1184:Entsch B, et al. (1976). 1: 2030:10.1016/S0021-9258(19)63696-3 1972:Biochem. Biophys. Res. Commun 1207:10.1016/S0021-9258(17)33523-8 1190:-hydroxybenzoate hydroxylase" 425:at the carboxy-terminal. The 1984:10.1016/0006-291X(67)90469-X 1912:10.1016/0005-2760(67)90153-1 1860:10.1371/journal.pone.0097249 1792:Eur Child Adolesc Psychiatry 1375:10.1016/0014-2999(81)90587-2 1049:Mole D, et al. (2016). 913:10.1515/bchm2.1971.352.1.837 864:10.1016/j.drudis.2015.11.001 368:-kynurenine. It employs one 349:kynurenine catabolic pathway 2471:Deoxyhypusine monooxygenase 730:visuospatial working memory 716:towards kynurenic acid and 2836: 2820:Enzymes of known structure 1243:10.2174/187152710793237430 386:neuroinflammatory diseases 237:kynurenine 3-monooxygenase 22:kynurenine 3-monooxygenase 2660:Michaelis–Menten kinetics 2466:Ecdysone 20-monooxygenase 2417:Stearoyl-CoA desaturase-1 2389:Dopamine beta-hydroxylase 2357:Phenylalanine hydroxylase 1804:10.1007/s00787-007-1009-1 1745:Frontiers in Neuroscience 1612:10.1007/s12640-010-9210-2 1567:10.1016/j.cub.2011.04.028 812:10.1007/978-1-4613-0381-7 599:-kynurenine to 3-hydroxy- 531:-kynurenine to 3-hydroxy- 341:-kynurenine-3-hydroxylase 180: 26: 2552:Diffusion-limited enzyme 1758:10.3389/fnins.2014.00012 328:kynurenine 3-hydroxylase 317:of this enzyme class is 2810:NADPH-dependent enzymes 1286:10.1074/jbc.M113.503813 1144:Pseudomonas fluorescens 613:oxidative degradation. 2451:Squalene monooxygenase 2367:Tryptophan hydroxylase 2116:HIF prolyl-hydroxylase 1947:10.1002/pmic.200500419 783:Cite journal requires 585: 413:containing asymmetric 343:. It participates in 332:kynurenine hydroxylase 2645:Eadie–Hofstee diagram 2578:Allosteric regulation 2247:Methane monooxygenase 2220:Nitric oxide synthase 1696:J Psychiatry Neurosci 691:protein in yeast and 583: 345:tryptophan metabolism 2655:Lineweaver–Burk plot 2362:Tyrosine hydroxylase 2086:steroid hydroxylases 852:Drug Discovery Today 740:) and of the liver. 2312:iron–sulfur protein 1851:2014PLoSO...997249B 1647:Arch Gen Psychiatry 1279:(51): 36554–36566. 1154:(47): 12420–12433. 977:10.1038/nature12039 969:2013Natur.496..382A 768:10.2210/pdb4j34/pdb 685:Parkinson's disease 589:Biological function 2614:Enzyme superfamily 2547:Enzyme promiscuity 2111:Prolyl hydroxylase 1798:(Suppl 1): 71–77. 1708:10.1503/jpn.100175 1402:Nat. Rev. Neurosci 1332:10.1007/bf00966592 726:predictive pursuit 607:kynurenine pathway 586: 2770: 2769: 2479: 2478: 2145:Lysyl hydroxylase 2007:-kynurenine from 1457:(19): 7463–7473. 1363:Eur. J. Pharmacol 1326:(10): 1139–1143. 1160:10.1021/bi8010434 1028:10.1093/jb/mvq099 963:(7445): 382–385. 821:978-1-4613-8026-9 714:metabolic pathway 671:Disease relevance 569:-kynurenine and H 382:neurodegenerative 256:chemical reaction 229: 228: 225: 224: 128:metabolic pathway 2827: 2787: 2786: 2778: 2650:Hanes–Woolf plot 2593:Enzyme activator 2588:Enzyme inhibitor 2562:Enzyme catalysis 2506: 2499: 2492: 2483: 2071: 2064: 2057: 2048: 2042: 2032: 2012: 2011: 2006: 2005: 1995: 1966: 1941:(9): 2726–2732. 1924: 1923: 1897: 1896: 1889: 1883: 1882: 1872: 1862: 1830: 1824: 1823: 1787: 1781: 1780: 1770: 1760: 1736: 1730: 1729: 1719: 1687: 1681: 1680: 1670: 1638: 1632: 1631: 1595: 1589: 1588: 1578: 1542: 1536: 1535: 1525: 1493: 1487: 1486: 1476: 1466: 1442: 1436: 1435: 1425: 1393: 1387: 1386: 1358: 1352: 1351: 1315: 1309: 1308: 1298: 1288: 1264: 1255: 1254: 1226: 1220: 1219: 1209: 1200:(9): 2550–2563. 1181: 1172: 1171: 1139: 1130: 1129: 1119: 1110:(4): 1092–1099. 1095: 1089: 1088: 1078: 1046: 1040: 1039: 1013: 1012: 1005: 999: 998: 988: 948: 925: 924: 898: 897: 890: 884: 883: 847: 834: 833: 799: 793: 792: 786: 781: 779: 771: 759: 718:anthranilic acid 635:anthranilic acid 628: 627: 618: 617: 604: 603: 598: 597: 568: 567: 562: 561: 552: 551: 546: 545: 536: 535: 530: 529: 504: 503: 448: 447: 442: 441: 367: 366: 340: 339: 323: 322: 291: 290: 266: 265: 182: 31: 19: 2835: 2834: 2830: 2829: 2828: 2826: 2825: 2824: 2795: 2794: 2793: 2781: 2773: 2771: 2766: 2678:Oxidoreductases 2664: 2640:Enzyme kinetics 2628: 2624:List of enzymes 2597: 2566: 2537:Catalytic triad 2515: 2510: 2480: 2475: 2429:- miscellaneous 2421: 2393: 2371: 2334: 2302: 2266: 2257:14α-demethylase 2166: 2093: 2078:Oxidoreductases 2075: 2045: 2009: 2008: 2003: 2002: 1998: 1969: 1932: 1928: 1927: 1894: 1893: 1891: 1890: 1886: 1832: 1831: 1827: 1789: 1788: 1784: 1738: 1737: 1733: 1689: 1688: 1684: 1640: 1639: 1635: 1597: 1596: 1592: 1561:(11): 961–966. 1544: 1543: 1539: 1495: 1494: 1490: 1444: 1443: 1439: 1414:10.1038/nrn3257 1395: 1394: 1390: 1360: 1359: 1355: 1317: 1316: 1312: 1266: 1265: 1258: 1228: 1227: 1223: 1183: 1182: 1175: 1141: 1140: 1133: 1104:Eur. J. Biochem 1097: 1096: 1092: 1067:10.1038/nm.4020 1055:Nature Medicine 1048: 1047: 1043: 1010: 1009: 1007: 1006: 1002: 950: 949: 928: 895: 894: 892: 891: 887: 849: 848: 837: 822: 801: 800: 796: 782: 772: 761: 760: 751: 746: 673: 646:quinolinic acid 625: 624: 615: 614: 601: 600: 595: 594: 591: 576: 572: 565: 564: 559: 558: 549: 548: 543: 542: 533: 532: 527: 526: 519: 512: 508: 501: 500: 498: 494: 490: 486: 482: 478: 474: 470: 463: 459: 445: 444: 439: 438: 435: 407: 364: 363: 360: 353:oxidoreductases 337: 336: 320: 319: 315:systematic name 303: 288: 287: 282: 263: 262: 35: 17: 12: 11: 5: 2833: 2831: 2823: 2822: 2817: 2812: 2807: 2797: 2796: 2792: 2791: 2768: 2767: 2765: 2764: 2751: 2738: 2725: 2712: 2699: 2686: 2672: 2670: 2666: 2665: 2663: 2662: 2657: 2652: 2647: 2642: 2636: 2634: 2630: 2629: 2627: 2626: 2621: 2616: 2611: 2605: 2603: 2602:Classification 2599: 2598: 2596: 2595: 2590: 2585: 2580: 2574: 2572: 2568: 2567: 2565: 2564: 2559: 2554: 2549: 2544: 2539: 2534: 2529: 2523: 2521: 2517: 2516: 2511: 2509: 2508: 2501: 2494: 2486: 2477: 2476: 2474: 2473: 2468: 2463: 2458: 2453: 2448: 2441:Heme oxygenase 2438: 2436:Cyclooxygenase 2432: 2430: 2423: 2422: 2420: 2419: 2414: 2408: 2406: 2395: 2394: 2392: 2391: 2385: 2383: 2373: 2372: 2370: 2369: 2364: 2359: 2353: 2351: 2336: 2335: 2333: 2332: 2327: 2322: 2316: 2314: 2304: 2303: 2301: 2300: 2295: 2290: 2284: 2282: 2268: 2267: 2265: 2264: 2259: 2254: 2249: 2244: 2239: 2238: 2237: 2232: 2227: 2217: 2216: 2215: 2210: 2205: 2200: 2195: 2184: 2182: 2168: 2167: 2165: 2164: 2163: 2162: 2157: 2147: 2142: 2141: 2140: 2135: 2134: 2133: 2128: 2123: 2107: 2105: 2103:2-oxoglutarate 2095: 2094: 2076: 2074: 2073: 2066: 2059: 2051: 2044: 2043: 2023:(2): 921–934. 1996: 1978:(3): 394–399. 1967: 1929: 1926: 1925: 1906:(2): 233–241. 1898:-tryptophan". 1884: 1825: 1782: 1731: 1682: 1653:(7): 665–674. 1633: 1606:(2): 308–318. 1590: 1537: 1514:10.1038/ng1542 1508:(5): 526–531. 1488: 1437: 1408:(7): 465–477. 1388: 1369:(4): 411–412. 1353: 1320:Neurochem. Res 1310: 1256: 1237:(6): 791–800. 1221: 1173: 1131: 1090: 1061:(2): 202–209. 1041: 1022:(6): 639–650. 1000: 926: 907:(6): 837–842. 885: 858:(2): 315–324. 835: 820: 794: 785:|journal= 748: 747: 745: 742: 672: 669: 631:kynurenic acid 590: 587: 574: 570: 518: 515: 510: 506: 496: 492: 488: 484: 480: 476: 472: 468: 461: 457: 434: 431: 406: 403: 392:models and in 358: 307: 306: 301: 280: 227: 226: 223: 222: 217: 211: 210: 205: 199: 198: 193: 187: 186: 178: 177: 168: 162: 161: 150: 143: 142: 137: 131: 130: 125: 119: 118: 113: 107: 106: 101: 95: 94: 89: 83: 82: 77: 71: 70: 66: 65: 60: 54: 53: 48: 42: 41: 37: 36: 32: 24: 23: 15: 13: 10: 9: 6: 4: 3: 2: 2832: 2821: 2818: 2816: 2815:Flavoproteins 2813: 2811: 2808: 2806: 2803: 2802: 2800: 2790: 2785: 2780: 2776: 2762: 2758: 2757: 2752: 2749: 2745: 2744: 2739: 2736: 2732: 2731: 2726: 2723: 2719: 2718: 2713: 2710: 2706: 2705: 2700: 2697: 2693: 2692: 2687: 2684: 2680: 2679: 2674: 2673: 2671: 2667: 2661: 2658: 2656: 2653: 2651: 2648: 2646: 2643: 2641: 2638: 2637: 2635: 2631: 2625: 2622: 2620: 2619:Enzyme family 2617: 2615: 2612: 2610: 2607: 2606: 2604: 2600: 2594: 2591: 2589: 2586: 2584: 2583:Cooperativity 2581: 2579: 2576: 2575: 2573: 2569: 2563: 2560: 2558: 2555: 2553: 2550: 2548: 2545: 2543: 2542:Oxyanion hole 2540: 2538: 2535: 2533: 2530: 2528: 2525: 2524: 2522: 2518: 2514: 2507: 2502: 2500: 2495: 2493: 2488: 2487: 2484: 2472: 2469: 2467: 2464: 2462: 2459: 2457: 2454: 2452: 2449: 2446: 2442: 2439: 2437: 2434: 2433: 2431: 2428: 2424: 2418: 2415: 2413: 2410: 2409: 2407: 2404: 2400: 2396: 2390: 2387: 2386: 2384: 2382: 2378: 2374: 2368: 2365: 2363: 2360: 2358: 2355: 2354: 2352: 2349: 2348:BH4 dependent 2345: 2341: 2337: 2331: 2328: 2326: 2323: 2321: 2318: 2317: 2315: 2313: 2309: 2305: 2299: 2296: 2294: 2291: 2289: 2286: 2285: 2283: 2281: 2277: 2273: 2269: 2263: 2260: 2258: 2255: 2253: 2250: 2248: 2245: 2243: 2240: 2236: 2233: 2231: 2228: 2226: 2223: 2222: 2221: 2218: 2214: 2211: 2209: 2206: 2204: 2201: 2199: 2196: 2194: 2191: 2190: 2189: 2186: 2185: 2183: 2181: 2177: 2173: 2169: 2161: 2158: 2156: 2153: 2152: 2151: 2148: 2146: 2143: 2139: 2136: 2132: 2129: 2127: 2124: 2122: 2119: 2118: 2117: 2114: 2113: 2112: 2109: 2108: 2106: 2104: 2100: 2096: 2091: 2087: 2083: 2079: 2072: 2067: 2065: 2060: 2058: 2053: 2052: 2049: 2040: 2036: 2031: 2026: 2022: 2018: 2017:J. Biol. Chem 2014: 1997: 1993: 1989: 1985: 1981: 1977: 1973: 1968: 1964: 1960: 1956: 1952: 1948: 1944: 1940: 1936: 1931: 1930: 1921: 1917: 1913: 1909: 1905: 1901: 1888: 1885: 1880: 1876: 1871: 1866: 1861: 1856: 1852: 1848: 1845:(5): e97249. 1844: 1840: 1836: 1829: 1826: 1821: 1817: 1813: 1809: 1805: 1801: 1797: 1793: 1786: 1783: 1778: 1774: 1769: 1764: 1759: 1754: 1750: 1746: 1742: 1735: 1732: 1727: 1723: 1718: 1713: 1709: 1705: 1701: 1697: 1693: 1686: 1683: 1678: 1674: 1669: 1664: 1660: 1656: 1652: 1648: 1644: 1637: 1634: 1629: 1625: 1621: 1617: 1613: 1609: 1605: 1601: 1600:Neurotox. Res 1594: 1591: 1586: 1582: 1577: 1572: 1568: 1564: 1560: 1556: 1552: 1550: 1541: 1538: 1533: 1529: 1524: 1519: 1515: 1511: 1507: 1503: 1499: 1492: 1489: 1484: 1480: 1475: 1470: 1465: 1460: 1456: 1452: 1448: 1441: 1438: 1433: 1429: 1424: 1419: 1415: 1411: 1407: 1403: 1399: 1392: 1389: 1384: 1380: 1376: 1372: 1368: 1364: 1357: 1354: 1349: 1345: 1341: 1337: 1333: 1329: 1325: 1321: 1314: 1311: 1306: 1302: 1297: 1292: 1287: 1282: 1278: 1274: 1270: 1263: 1261: 1257: 1252: 1248: 1244: 1240: 1236: 1232: 1225: 1222: 1217: 1213: 1208: 1203: 1199: 1195: 1194:J. Biol. Chem 1191: 1189: 1180: 1178: 1174: 1169: 1165: 1161: 1157: 1153: 1149: 1145: 1138: 1136: 1132: 1127: 1123: 1118: 1113: 1109: 1105: 1101: 1094: 1091: 1086: 1082: 1077: 1072: 1068: 1064: 1060: 1056: 1052: 1045: 1042: 1037: 1033: 1029: 1025: 1021: 1017: 1004: 1001: 996: 992: 987: 982: 978: 974: 970: 966: 962: 958: 954: 947: 945: 943: 941: 939: 937: 935: 933: 931: 927: 922: 918: 914: 910: 906: 902: 889: 886: 881: 877: 873: 869: 865: 861: 857: 853: 846: 844: 842: 840: 836: 831: 827: 823: 817: 813: 809: 805: 798: 795: 790: 777: 769: 765: 758: 756: 754: 750: 743: 741: 739: 738:tic disorders 735: 734:schizophrenia 731: 727: 723: 719: 715: 711: 707: 703: 702:polymorphisms 698: 696: 695: 690: 686: 682: 678: 670: 668: 666: 662: 658: 653: 651: 647: 642: 640: 636: 632: 622: 612: 608: 588: 582: 578: 556: 540: 524: 523:hydroxylation 516: 514: 465: 455: 453: 432: 430: 428: 424: 420: 416: 412: 404: 402: 399: 395: 391: 387: 383: 379: 378:immunological 375: 371: 361: 354: 350: 346: 342: 333: 329: 325: 316: 312: 305: 297: 293: 283: 276: 272: 268: 260: 259: 258: 257: 253: 249: 245: 242: 238: 234: 221: 218: 216: 212: 209: 206: 204: 200: 197: 194: 192: 188: 183: 179: 176: 172: 169: 167: 166:Gene Ontology 163: 160: 157: 154: 151: 148: 144: 141: 138: 136: 132: 129: 126: 124: 120: 117: 114: 112: 108: 105: 104:NiceZyme view 102: 100: 96: 93: 90: 88: 84: 81: 78: 76: 72: 67: 64: 61: 59: 55: 52: 49: 47: 43: 38: 30: 25: 20: 2756:Translocases 2753: 2740: 2727: 2714: 2701: 2691:Transferases 2688: 2675: 2532:Binding site 2280:flavoprotein 2084:, including 2082:dioxygenases 2020: 2016: 2013:-kynurenine" 1975: 1971: 1938: 1934: 1903: 1899: 1887: 1842: 1838: 1828: 1795: 1791: 1785: 1748: 1744: 1734: 1702:(1): 53–57. 1699: 1695: 1685: 1650: 1646: 1636: 1603: 1599: 1593: 1558: 1554: 1548: 1540: 1505: 1501: 1491: 1454: 1450: 1440: 1405: 1401: 1391: 1366: 1362: 1356: 1323: 1319: 1313: 1276: 1272: 1234: 1230: 1224: 1197: 1193: 1187: 1151: 1148:Biochemistry 1147: 1143: 1107: 1103: 1093: 1058: 1054: 1044: 1019: 1015: 1003: 960: 956: 904: 900: 888: 855: 851: 803: 797: 776:cite journal 699: 692: 677:Huntington's 674: 654: 643: 639:kynureninase 592: 520: 466: 451: 436: 408: 347:through the 335: 331: 327: 318: 308: 236: 230: 92:BRENDA entry 2527:Active site 1451:J. Neurosci 681:Alzheimer's 433:Active site 427:hydrophobic 292:-kynurenine 267:-kynurenine 80:IntEnz view 40:Identifiers 2805:EC 1.14.13 2799:Categories 2730:Isomerases 2704:Hydrolases 2571:Regulation 2412:Tyrosinase 2379:: reduced 2342:: reduced 2310:: reduced 2274:: reduced 1935:Proteomics 1751:(12): 12. 1555:Curr. Biol 1549:Drosophila 1502:Nat. Genet 1016:J. Biochem 744:References 722:kynurenine 710:kynurenine 694:Drosophila 689:huntingtin 665:antagonist 663:and as an 657:antagonist 623:3-hydroxy- 621:neurotoxin 611:tryptophan 311:KMO (gene) 286:3-hydroxy- 233:enzymology 149:structures 116:KEGG entry 63:9029-61-2 2609:EC number 2381:ascorbate 2344:pteridine 872:1359-6446 706:cytokines 517:Mechanism 405:Structure 252:catalyzes 244:1.14.13.9 69:Databases 51:1.14.13.9 2633:Kinetics 2557:Cofactor 2520:Activity 2039:13502353 1963:24074942 1955:16526094 1879:24836604 1839:PLOS ONE 1820:39150343 1812:17665285 1777:24567701 1726:21693093 1677:21727251 1620:20658274 1585:21636279 1532:15806102 1483:11567036 1432:22678511 1348:28669340 1305:24189070 1251:20942784 1168:18954092 1126:10672018 1085:26752518 1036:20802227 995:23575632 880:26589832 830:38080353 555:ketimine 541:. After 415:subunits 398:homology 370:cofactor 246:) is an 220:proteins 208:articles 196:articles 153:RCSB PDB 2789:Biology 2743:Ligases 2513:Enzymes 2427:1.14.99 2405:: other 2399:1.14.18 2377:1.14.17 2340:1.14.16 2308:1.14.15 2272:1.14.14 2172:1.14.13 2099:1.14.11 1992:6076241 1920:4168935 1870:4023975 1847:Bibcode 1768:3915289 1717:3244499 1668:3855543 1628:3225744 1576:3929356 1523:1449881 1474:6762893 1423:3681811 1383:6268428 1340:1686636 1296:3868768 1076:4871268 986:3736096 965:Bibcode 921:5087636 659:of the 509:and Tyr 423:α-helix 419:β-sheet 175:QuickGO 140:profile 123:MetaCyc 58:CAS no. 2775:Portal 2717:Lyases 2276:flavin 2155:ALKBH1 2037:  1990:  1961:  1953:  1918:  1877:  1867:  1818:  1810:  1775:  1765:  1724:  1714:  1675:  1665:  1626:  1618:  1583:  1573:  1530:  1520:  1481:  1471:  1430:  1420:  1381:  1346:  1338:  1303:  1293:  1249:  1216:816794 1214:  1166:  1124:  1083:  1073:  1034:  993:  983:  957:Nature 919:  878:  870:  828:  818:  683:, and 384:, and 334:, and 313:. The 248:enzyme 203:PubMed 185:Search 171:AmiGO 159:PDBsum 99:ExPASy 87:BRENDA 75:IntEnz 46:EC no. 16:Enzyme 2669:Types 2445:HMOX1 2180:NADPH 2138:P4HTM 2131:EGLN3 2126:EGLN2 2121:EGLN1 2092:1.14) 1959:S2CID 1816:S2CID 1624:S2CID 1344:S2CID 826:S2CID 491:, Phe 487:, Pro 483:, Phe 479:, Leu 475:, Ile 471:, Met 454:-face 411:dimer 394:yeast 271:NADPH 250:that 135:PRIAM 2761:list 2754:EC7 2748:list 2741:EC6 2735:list 2728:EC5 2722:list 2715:EC4 2709:list 2702:EC3 2696:list 2689:EC2 2683:list 2676:EC1 2461:21A2 2456:17A1 2330:11A1 2325:11B2 2320:11B1 2288:19A1 2235:NOS3 2230:NOS2 2225:NOS1 2213:FMO5 2208:FMO4 2203:FMO3 2198:FMO2 2193:FMO1 2176:NADH 2150:AlkB 2035:PMID 1988:PMID 1951:PMID 1916:PMID 1875:PMID 1808:PMID 1773:PMID 1722:PMID 1673:PMID 1616:PMID 1581:PMID 1528:PMID 1479:PMID 1428:PMID 1379:PMID 1336:PMID 1301:PMID 1247:PMID 1212:PMID 1164:PMID 1122:PMID 1081:PMID 1032:PMID 991:PMID 917:PMID 876:PMID 868:ISSN 816:ISBN 789:help 728:and 650:NMDA 460:–Gln 296:NADP 254:the 235:, a 215:NCBI 156:PDBe 111:KEGG 2298:2E1 2293:2D6 2278:or 2252:3A4 2178:or 2160:FTO 2025:doi 2021:229 1980:doi 1943:doi 1908:doi 1904:144 1865:PMC 1855:doi 1800:doi 1763:PMC 1753:doi 1712:PMC 1704:doi 1663:PMC 1655:doi 1608:doi 1571:PMC 1563:doi 1518:PMC 1510:doi 1469:PMC 1459:doi 1418:PMC 1410:doi 1371:doi 1328:doi 1291:PMC 1281:doi 1277:288 1239:doi 1202:doi 1198:251 1156:doi 1112:doi 1108:267 1071:PMC 1063:doi 1024:doi 1020:148 981:PMC 973:doi 961:496 909:doi 905:352 860:doi 808:doi 764:doi 637:by 577:). 525:of 497:325 493:322 489:321 485:246 481:234 477:232 473:230 469:221 462:325 458:321 390:rat 374:FAD 231:In 191:PMC 147:PDB 2801:: 2403:19 2174:: 2101:: 2090:EC 2080:: 2033:. 2019:. 2015:. 1986:. 1976:29 1974:. 1957:. 1949:. 1937:. 1914:. 1902:. 1873:. 1863:. 1853:. 1841:. 1837:. 1814:. 1806:. 1796:16 1794:. 1771:. 1761:. 1747:. 1743:. 1720:. 1710:. 1700:37 1698:. 1694:. 1671:. 1661:. 1651:68 1649:. 1645:. 1622:. 1614:. 1604:19 1602:. 1579:. 1569:. 1559:21 1557:. 1553:. 1526:. 1516:. 1506:37 1504:. 1500:. 1477:. 1467:. 1455:21 1453:. 1449:. 1426:. 1416:. 1406:13 1404:. 1400:. 1377:. 1367:72 1365:. 1342:. 1334:. 1324:16 1322:. 1299:. 1289:. 1275:. 1271:. 1259:^ 1245:. 1233:. 1210:. 1196:. 1192:. 1176:^ 1162:. 1152:47 1150:. 1134:^ 1120:. 1106:. 1102:. 1079:. 1069:. 1059:22 1057:. 1053:. 1030:. 1018:. 989:. 979:. 971:. 959:. 955:. 929:^ 915:. 903:. 874:. 866:. 856:21 854:. 838:^ 824:. 814:. 780:: 778:}} 774:{{ 752:^ 736:, 704:, 679:, 641:. 575:ox 511:97 507:83 452:Re 380:, 372:, 330:, 298:+ 294:+ 284:⇌ 277:+ 273:+ 269:+ 241:EC 173:/ 2777:: 2763:) 2759:( 2750:) 2746:( 2737:) 2733:( 2724:) 2720:( 2711:) 2707:( 2698:) 2694:( 2685:) 2681:( 2505:e 2498:t 2491:v 2447:) 2443:( 2401:- 2350:) 2346:( 2088:( 2070:e 2063:t 2056:v 2041:. 2027:: 2010:L 2004:L 1994:. 1982:: 1965:. 1945:: 1939:6 1922:. 1910:: 1895:L 1881:. 1857:: 1849:: 1843:9 1822:. 1802:: 1779:. 1755:: 1749:8 1728:. 1706:: 1679:. 1657:: 1630:. 1610:: 1587:. 1565:: 1534:. 1512:: 1485:. 1461:: 1434:. 1412:: 1385:. 1373:: 1350:. 1330:: 1307:. 1283:: 1253:. 1241:: 1235:9 1218:. 1204:: 1188:p 1170:. 1158:: 1128:. 1114:: 1087:. 1065:: 1038:. 1026:: 1011:L 997:. 975:: 967:: 923:. 911:: 896:L 882:. 862:: 832:. 810:: 791:) 787:( 770:. 766:: 626:L 616:L 602:L 596:L 571:2 566:L 560:L 550:L 544:L 534:L 528:L 502:L 446:L 440:L 365:L 359:2 357:O 338:L 321:L 304:O 302:2 300:H 289:L 281:2 279:O 275:H 264:L 239:(

Index


EC no.
1.14.13.9
CAS no.
9029-61-2
IntEnz
IntEnz view
BRENDA
BRENDA entry
ExPASy
NiceZyme view
KEGG
KEGG entry
MetaCyc
metabolic pathway
PRIAM
profile
PDB
RCSB PDB
PDBe
PDBsum
Gene Ontology
AmiGO
QuickGO
PMC
articles
PubMed
articles
NCBI
proteins

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