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Pathway Description
Ornithine Aminotransferase Deficiency (OAT Deficiency)
Homo sapiens
Disease Pathway
Ornithine aminotransferase deficiency (OAT deficiency, ornithine keto acid aminotransferase deficiency, OKT deficiency, ornithine-delta-aminotransferase deficiency, gyrate atrophy of the choroid and retina) is an autosomal recessive disorder of ornithine metabolism caused by a defective ornithine aminotransferase (OAT). OAT catalyzes the conversion of ornithine into proline which is a conditionally essential amino acid. This disease is characterized by a very large accumulation of ornithine in the blood. Symptoms of the disease include tunnel vision, night blindness, myopia, and progressive vision loss.
References
Ornithine Aminotransferase Deficiency (OAT Deficiency) References
[OMIM: Entry 258870](http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=258870)
Akaki Y, Hotta Y, Mashima Y, Murakami A, Kennaway NG, Weleber RG, Inana G: A deletion in the ornithine aminotransferase gene in gyrate atrophy. J Biol Chem. 1992 Jun 25;267(18):12950-4.
Pubmed: 1618792
Brody LC, Mitchell GA, Obie C, Michaud J, Steel G, Fontaine G, Robert MF, Sipila I, Kaiser-Kupfer M, Valle D: Ornithine delta-aminotransferase mutations in gyrate atrophy. Allelic heterogeneity and functional consequences. J Biol Chem. 1992 Feb 15;267(5):3302-7.
Pubmed: 1737786
Hotta Y, Kennaway NG, Weleber RG, Inana G: Inheritance of ornithine aminotransferase gene, mRNA, and enzyme defect in a family with gyrate atrophy of the choroid and retina. Am J Hum Genet. 1989 Mar;44(3):353-7.
Pubmed: 2916581
Cleary MA, Dorland L, de Koning TJ, Poll-The BT, Duran M, Mandell R, Shih VE, Berger R, Olpin SE, Besley GT: Ornithine aminotransferase deficiency: diagnostic difficulties in neonatal presentation. J Inherit Metab Dis. 2005;28(5):673-9. doi: 10.1007/s10545-005-0074-1.
Pubmed: 16151897
Arginine and Proline Metabolism 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.
Wu G, Bazer FW, Davis TA, Kim SW, Li P, Marc Rhoads J, Carey Satterfield M, Smith SB, Spencer TE, Yin Y: Arginine metabolism and nutrition in growth, health and disease. Amino Acids. 2009 May;37(1):153-68. doi: 10.1007/s00726-008-0210-y. Epub 2008 Nov 23.
Pubmed: 19030957
Wu G, Morris SM Jr: Arginine metabolism: nitric oxide and beyond. Biochem J. 1998 Nov 15;336 ( Pt 1):1-17. doi: 10.1042/bj3360001.
Pubmed: 9806879
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