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Pathway Description
Hyperphenylalaninemia Due to 6-Pyruvoyltetrahydropterin Synthase Deficiency (ptps)
Homo sapiens
Disease Pathway
Created: 2013-08-29
Last Updated: 2022-11-01
BH4-deficient hyperphenylalaninemia has several causes. One such cause is a PTS deficiency resultant from a genetic mutation. (In particular, a mutation in the gene encoding 6-pyruvoyl-tetrahydropterin synthase.) The mutation is autosomal recessive. Common symptoms include: muscular hypotonia, ataxia, bradykinesia, choreoathetosis, depressivity, dysphagia, hyperkinesis, hypsarrhythmia, myoclonus, and others. BH4 is a cofactor involved in many things and associated with neurotransmitter synthesis. In short, the reduction of levels of BH4 creates issues in the metabolism of phenylalanine. This cascade of reactions produces the aforementioned symptoms.
References
Hyperphenylalaninemia Due to 6-Pyruvoyltetrahydropterin Synthase Deficiency (ptps) References
[Metagen: HYPERPHENYLALANINEMIA DUE TO 6-PYRUVOYLTETRAHYDROPTERIN SYNTHASE DEFICIENCY (PTPS)](http://metagene.de/program/d.prg?id_d=71)
[OMIM: 261640](http://omim.org/entry/261640})
Dhondt JL, Guibaud P, Rolland MO, Dorche C, Andre S, Forzy G, Hayte JM: Neonatal hyperphenylalaninaemia presumably caused by a new variant of biopterin synthetase deficiency. Eur J Pediatr. 1988 Feb;147(2):153-7.
Pubmed: 3366132
Ashida A, Owada M, Hatakeyama K: A missense mutation (A to G) of 6-pyruvoyltetrahydropterin synthase in tetrahydrobiopterin-deficient form of hyperphenylalaninemia. Genomics. 1994 Nov 15;24(2):408-10. doi: 10.1006/geno.1994.1642.
Pubmed: 7698774
Pterine Biosynthesis References
Lehninger, A.L. Lehninger principles of biochemistry (4th ed.) (2005). New York: W.H Freeman.
Salway, J.G. Metabolism at a glance (3rd ed.) (2004). Alden, Mass.: Blackwell Pub.
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Pubmed: 10727395
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Crabtree MJ, Channon KM: Synthesis and recycling of tetrahydrobiopterin in endothelial function and vascular disease. Nitric Oxide. 2011 Aug 1;25(2):81-8. doi: 10.1016/j.niox.2011.04.004. Epub 2011 Apr 22.
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Pubmed: 14702039
Zody MC, Garber M, Sharpe T, Young SK, Rowen L, O'Neill K, Whittaker CA, Kamal M, Chang JL, Cuomo CA, Dewar K, FitzGerald MG, Kodira CD, Madan A, Qin S, Yang X, Abbasi N, Abouelleil A, Arachchi HM, Baradarani L, Birditt B, Bloom S, Bloom T, Borowsky ML, Burke J, Butler J, Cook A, DeArellano K, DeCaprio D, Dorris L 3rd, Dors M, Eichler EE, Engels R, Fahey J, Fleetwood P, Friedman C, Gearin G, Hall JL, Hensley G, Johnson E, Jones C, Kamat A, Kaur A, Locke DP, Madan A, Munson G, Jaffe DB, Lui A, Macdonald P, Mauceli E, Naylor JW, Nesbitt R, Nicol R, O'Leary SB, Ratcliffe A, Rounsley S, She X, Sneddon KM, Stewart S, Sougnez C, Stone SM, Topham K, Vincent D, Wang S, Zimmer AR, Birren BW, Hood L, Lander ES, Nusbaum C: Analysis of the DNA sequence and duplication history of human chromosome 15. Nature. 2006 Mar 30;440(7084):671-5. doi: 10.1038/nature04601.
Pubmed: 16572171
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Pubmed: 15489334
Thony B, Leimbacher W, Burgisser D, Heizmann CW: Human 6-pyruvoyltetrahydropterin synthase: cDNA cloning and heterologous expression of the recombinant enzyme. Biochem Biophys Res Commun. 1992 Dec 30;189(3):1437-43. doi: 10.1016/0006-291x(92)90235-d.
Pubmed: 1282802
Ashida A, Hatakeyama K, Kagamiyama H: cDNA cloning, expression in Escherichia coli and purification of human 6-pyruvoyl-tetrahydropterin synthase. Biochem Biophys Res Commun. 1993 Sep 30;195(3):1386-93. doi: 10.1006/bbrc.1993.2197.
Pubmed: 8216273
Ashida A, Owada M, Hatakeyama K: A missense mutation (A to G) of 6-pyruvoyltetrahydropterin synthase in tetrahydrobiopterin-deficient form of hyperphenylalaninemia. Genomics. 1994 Nov 15;24(2):408-10. doi: 10.1006/geno.1994.1642.
Pubmed: 7698774
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