| Structural highlights
Disease
[SUOX_HUMAN] Defects in SUOX are the cause of isolated sulfite oxidase deficiency (ISOD) [MIM:272300]; also known as sulfocysteinuria. ISOD is characterized by neurological abnormalities including multicystic leukoencephalopathy with brain atrophy. Patients often suffer from seizures. Often leads to death at an early age.[1] [2] [3] [4] [5]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The molybdenum- and iron-containing enzyme sulfite oxidase catalyzes the physiologically vital oxidation of sulfite to sulfate. Sulfite oxidase contains three domains: an N-terminal cytochrome b(5) domain, a central domain harboring the molybdenum cofactor (Moco) and a C-terminal dimerization domain. Oxidation of the substrate sulfite is coupled to the transfer of two electrons to the molybdenum cofactor. Subsequently, these electrons are passed on, one at a time, to the b(5) heme of sulfite oxidase and from there to the soluble electron carrier cytochrome c. The crystal structure of the oxidized human sulfite oxidase cytochrome b(5) domain has been determined at 1.2 A resolution and has been refined to a crystallographic R factor of 0.107 (R(free) = 0.137). A comparison of this structure with other b(5)-type cytochromes reveals distinct structural features present in the sulfite oxidase b(5) domain which promote optimal electron transport between the Moco of sulfite oxidase and the heme of cytochrome c.
The 1.2 A structure of the human sulfite oxidase cytochrome b(5) domain.,Rudolph MJ, Johnson JL, Rajagopalan KV, Kisker C Acta Crystallogr D Biol Crystallogr. 2003 Jul;59(Pt 7):1183-91. Epub 2003, Jun 27. PMID:12832761[6]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Kisker C, Schindelin H, Pacheco A, Wehbi WA, Garrett RM, Rajagopalan KV, Enemark JH, Rees DC. Molecular basis of sulfite oxidase deficiency from the structure of sulfite oxidase. Cell. 1997 Dec 26;91(7):973-83. PMID:9428520
- ↑ Garrett RM, Johnson JL, Graf TN, Feigenbaum A, Rajagopalan KV. Human sulfite oxidase R160Q: identification of the mutation in a sulfite oxidase-deficient patient and expression and characterization of the mutant enzyme. Proc Natl Acad Sci U S A. 1998 May 26;95(11):6394-8. PMID:9600976
- ↑ Edwards MC, Johnson JL, Marriage B, Graf TN, Coyne KE, Rajagopalan KV, MacDonald IM. Isolated sulfite oxidase deficiency: review of two cases in one family. Ophthalmology. 1999 Oct;106(10):1957-61. PMID:10519592 doi:S0161-6420(99)90408-6
- ↑ Johnson JL, Coyne KE, Garrett RM, Zabot MT, Dorche C, Kisker C, Rajagopalan KV. Isolated sulfite oxidase deficiency: identification of 12 novel SUOX mutations in 10 patients. Hum Mutat. 2002 Jul;20(1):74. PMID:12112661 doi:10.1002/humu.9038
- ↑ Lee HF, Mak BS, Chi CS, Tsai CR, Chen CH, Shu SG. A novel mutation in neonatal isolated sulphite oxidase deficiency. Neuropediatrics. 2002 Aug;33(4):174-9. PMID:12368985 doi:10.1055/s-2002-34491
- ↑ Rudolph MJ, Johnson JL, Rajagopalan KV, Kisker C. The 1.2 A structure of the human sulfite oxidase cytochrome b(5) domain. Acta Crystallogr D Biol Crystallogr. 2003 Jul;59(Pt 7):1183-91. Epub 2003, Jun 27. PMID:12832761
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