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Pathway Description
Hypermethioninemia
Homo sapiens
Disease Pathway
Created: 2022-11-21
Last Updated: 2023-10-25
Hypermethioninemia is a rare error of metabolism (IEM) which arises when there is a disfunction in the gene called AHCY. This gene is responsible for Adenosylhomocysteinase, an enzyme which takes S-adenosyl homocysteine as input, and produces homocysteine as its output. This outputted compound through the its respective pathway may be turned back into cysteine methionine. A dysfunctional defect Adenosylhomocysteinase can lead to the build of of these two compounds in the blood. Of particular interest is that individuals who are affected by hypermethioninemia present a wide spectrum of symptoms. This ranges anywhere from the complete absence of symptoms, to mental retardation, muscle weakness, liver problems, and unusual facial features.
References
Hypermethioninemia References
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Pubmed: 1527987
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Pubmed: 9042912
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Pubmed: 1191305
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Pubmed: 7229751
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Pubmed: 14702039
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Pubmed: 9680386
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Pubmed: 8826441
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Pubmed: 8940272
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Pubmed: 8968737
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Pubmed: 8968735
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Pubmed: 9013615
Wang J, Hegele RA: Genomic basis of cystathioninuria (MIM 219500) revealed by multiple mutations in cystathionine gamma-lyase (CTH). Hum Genet. 2003 Apr;112(4):404-8. doi: 10.1007/s00439-003-0906-8. Epub 2003 Feb 6.
Pubmed: 12574942
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Pubmed: 1339280
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Pubmed: 9790750
Kraus JP, Janosik M, Kozich V, Mandell R, Shih V, Sperandeo MP, Sebastio G, de Franchis R, Andria G, Kluijtmans LA, Blom H, Boers GH, Gordon RB, Kamoun P, Tsai MY, Kruger WD, Koch HG, Ohura T, Gaustadnes M: Cystathionine beta-synthase mutations in homocystinuria. Hum Mutat. 1999;13(5):362-75. doi: 10.1002/(SICI)1098-1004(1999)13:5<362::AID-HUMU4>3.0.CO;2-K.
Pubmed: 10338090
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Pubmed: 7903580
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Pubmed: 12818402
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Pubmed: 8798461
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Pubmed: 10075673
Stanley BA, Pegg AE, Holm I: Site of pyruvate formation and processing of mammalian S-adenosylmethionine decarboxylase proenzyme. J Biol Chem. 1989 Dec 15;264(35):21073-9.
Pubmed: 2687270
Pajunen A, Crozat A, Janne OA, Ihalainen R, Laitinen PH, Stanley B, Madhubala R, Pegg AE: Structure and regulation of mammalian S-adenosylmethionine decarboxylase. J Biol Chem. 1988 Nov 15;263(32):17040-9.
Pubmed: 2460457
Bechtel S, Rosenfelder H, Duda A, Schmidt CP, Ernst U, Wellenreuther R, Mehrle A, Schuster C, Bahr A, Blocker H, Heubner D, Hoerlein A, Michel G, Wedler H, Kohrer K, Ottenwalder B, Poustka A, Wiemann S, Schupp I: The full-ORF clone resource of the German cDNA Consortium. BMC Genomics. 2007 Oct 31;8:399. doi: 10.1186/1471-2164-8-399.
Pubmed: 17974005
Wahlfors J, Alhonen L, Kauppinen L, Hyvonen T, Janne J, Eloranta TO: Human spermidine synthase: cloning and primary structure. DNA Cell Biol. 1990 Mar;9(2):103-10. doi: 10.1089/dna.1990.9.103.
Pubmed: 2344393
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Pubmed: 2069720
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. doi: 10.1038/nature04727.
Pubmed: 16710414
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