1nen
From Proteopedia
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[[Category: Yankovskaya, V.]] | [[Category: Yankovskaya, V.]] | ||
[[Category: Membrane protein]] | [[Category: Membrane protein]] | ||
| + | [[Category: Oxidoreductase/electron transport complex]] | ||
[[Category: Respiratory complex]] | [[Category: Respiratory complex]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Apr 2 16:17:24 2009'' |
Revision as of 13:17, 2 April 2009
Complex II (Succinate Dehydrogenase) From E. Coli with Dinitrophenol-17 inhibitor co-crystallized at the ubiquinone binding site
The structure of Escherichia coli succinate dehydrogenase (SQR), analogous to the mitochondrial respiratory complex II, has been determined, revealing the electron transport pathway from the electron donor, succinate, to the terminal electron acceptor, ubiquinone. It was found that the SQR redox centers are arranged in a manner that aids the prevention of reactive oxygen species (ROS) formation at the flavin adenine dinucleotide. This is likely to be the main reason SQR is expressed during aerobic respiration rather than the related enzyme fumarate reductase, which produces high levels of ROS. Furthermore, symptoms of genetic disorders associated with mitochondrial SQR mutations may be a result of ROS formation resulting from impaired electron transport in the enzyme.
Architecture of succinate dehydrogenase and reactive oxygen species generation., Yankovskaya V, Horsefield R, Tornroth S, Luna-Chavez C, Miyoshi H, Leger C, Byrne B, Cecchini G, Iwata S, Science. 2003 Jan 31;299(5607):700-4. PMID:12560550
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
About this Structure
1NEN is a 4 chains structure of sequences from Escherichia coli. Full crystallographic information is available from OCA.
Reference
- Yankovskaya V, Horsefield R, Tornroth S, Luna-Chavez C, Miyoshi H, Leger C, Byrne B, Cecchini G, Iwata S. Architecture of succinate dehydrogenase and reactive oxygen species generation. Science. 2003 Jan 31;299(5607):700-4. PMID:12560550 doi:10.1126/science.1079605
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