| Structural highlights
Disease
[SODC_HUMAN] Defects in SOD1 are the cause of amyotrophic lateral sclerosis type 1 (ALS1) [MIM:105400]. ALS1 is a familial form of amyotrophic lateral sclerosis, a neurodegenerative disorder affecting upper and lower motor neurons and resulting in fatal paralysis. Sensory abnormalities are absent. Death usually occurs within 2 to 5 years. The etiology of amyotrophic lateral sclerosis is likely to be multifactorial, involving both genetic and environmental factors. The disease is inherited in 5-10% of cases leading to familial forms.[1] [2] [3] [4] [5] [6] [7] [8] [:][9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [40] [41] [42] [43] [44] [45]
Function
[SODC_HUMAN] Destroys radicals which are normally produced within the cells and which are toxic to biological systems.
Publication Abstract from PubMed
We introduce a new approach to improve structural and dynamical determination of large metalloproteins using solid-state nuclear magnetic resonance (NMR) with (1)H detection under ultrafast magic angle spinning (MAS). The approach is based on the rapid and sensitive acquisition of an extensive set of (15)N and (13)C nuclear relaxation rates. The system on which we demonstrate these methods is the enzyme Cu, Zn superoxide dismutase (SOD), which coordinates a Cu ion available either in Cu(+) (diamagnetic) or Cu(2+) (paramagnetic) form. Paramagnetic relaxation enhancements are obtained from the difference in rates measured in the two forms and are employed as structural constraints for the determination of the protein structure. When added to (1)H-(1)H distance restraints, they are shown to yield a twofold improvement of the precision of the structure. Site-specific order parameters and timescales of motion are obtained by a Gaussian axial fluctuation (GAF) analysis of the relaxation rates of the diamagnetic molecule, and interpreted in relation to backbone structure and metal binding. Timescales for motion are found to be in the range of the overall correlation time in solution, where internal motions characterized here would not be observable.
Structure and backbone dynamics of a microcrystalline metalloprotein by solid-state NMR.,Knight MJ, Pell AJ, Bertini I, Felli IC, Gonnelli L, Pierattelli R, Herrmann T, Emsley L, Pintacuda G Proc Natl Acad Sci U S A. 2012 Jul 10;109(28):11095-100. Epub 2012 Jun 21. PMID:22723345[46]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
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- ↑ Kawamata J, Shimohama S, Takano S, Harada K, Ueda K, Kimura J. Novel G16S (GGC-AGC) mutation in the SOD-1 gene in a patient with apparently sporadic young-onset amyotrophic lateral sclerosis. Hum Mutat. 1997;9(4):356-8. PMID:9101297 doi:<356::AID-HUMU9>3.0.CO;2-3 10.1002/(SICI)1098-1004(1997)9:4<356::AID-HUMU9>3.0.CO;2-3
- ↑ Orrell RW, Marklund SL, deBelleroche JS. Familial ALS is associated with mutations in all exons of SOD1: a novel mutation in exon 3 (Gly72Ser). J Neurol Sci. 1997 Dec 9;153(1):46-9. PMID:9455977
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- ↑ Murakami T, Warita H, Hayashi T, Sato K, Manabe Y, Mizuno S, Yamane K, Abe K. A novel SOD1 gene mutation in familial ALS with low penetrance in females. J Neurol Sci. 2001 Aug 15;189(1-2):45-7. PMID:11535232
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- ↑ Alexander MD, Traynor BJ, Miller N, Corr B, Frost E, McQuaid S, Brett FM, Green A, Hardiman O. "True" sporadic ALS associated with a novel SOD-1 mutation. Ann Neurol. 2002 Nov;52(5):680-3. PMID:12402272 doi:10.1002/ana.10369
- ↑ Niwa J, Ishigaki S, Hishikawa N, Yamamoto M, Doyu M, Murata S, Tanaka K, Taniguchi N, Sobue G. Dorfin ubiquitylates mutant SOD1 and prevents mutant SOD1-mediated neurotoxicity. J Biol Chem. 2002 Sep 27;277(39):36793-8. Epub 2002 Jul 26. PMID:12145308 doi:10.1074/jbc.M206559200
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- ↑ del Grande A, Luigetti M, Conte A, Mancuso I, Lattante S, Marangi G, Stipa G, Zollino M, Sabatelli M. A novel L67P SOD1 mutation in an Italian ALS patient. Amyotroph Lateral Scler. 2011 Mar;12(2):150-2. doi: 10.3109/17482968.2011.551939., Epub 2011 Jan 19. PMID:21247266 doi:10.3109/17482968.2011.551939
- ↑ Chio A, Borghero G, Pugliatti M, Ticca A, Calvo A, Moglia C, Mutani R, Brunetti M, Ossola I, Marrosu MG, Murru MR, Floris G, Cannas A, Parish LD, Cossu P, Abramzon Y, Johnson JO, Nalls MA, Arepalli S, Chong S, Hernandez DG, Traynor BJ, Restagno G. Large proportion of amyotrophic lateral sclerosis cases in Sardinia due to a single founder mutation of the TARDBP gene. Arch Neurol. 2011 May;68(5):594-8. doi: 10.1001/archneurol.2010.352. Epub 2011, Jan 10. PMID:21220647 doi:10.1001/archneurol.2010.352
- ↑ Knight MJ, Pell AJ, Bertini I, Felli IC, Gonnelli L, Pierattelli R, Herrmann T, Emsley L, Pintacuda G. Structure and backbone dynamics of a microcrystalline metalloprotein by solid-state NMR. Proc Natl Acad Sci U S A. 2012 Jul 10;109(28):11095-100. Epub 2012 Jun 21. PMID:22723345 doi:10.1073/pnas.1204515109
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