دانلود رایگان مقاله لاتین انتقال الکترون از باکتری آناموکس از سایت الزویر
عنوان فارسی مقاله:
سیستم انتقال الکترون متصل به غشا از یک باکتری آناموکس: تجزیه و تحلیل پیچیده
عنوان انگلیسی مقاله:
Membrane-bound electron transport systems of an anammox bacterium: A complexome analysis
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Respiration is a quintessential property of most forms of life. This principle, also known as electron transport (ETP) or oxidative phosphorylation (OXPHOS), was comprehensively formulated in his seminal paper by Peter Mitchell just fifty years ago [1]. Herein, electrons derived from the oxidation of primary electron donors are transferred via one or more (membrane-bound) Respiratory Complexes (RCs) to a terminal electron acceptor [2]. Low-molecular weight mobile carriers dissolved in the cytoplasm (NADH, ferredoxins), in the membrane (quinones) or in the periplasmic solute (c-type cytochromes or blue copper proteins (BCPs)) act as electron shuttles in between the RCs. These systems are organized in such a way that the energy released in these redox processes is conserved as a proton- (or sodium-) motive force (pmf or smf) across a cell membrane. This force drives the synthesis of ATP by a H+ (or Na+)-dependent membrane-bound ATP synthase (ATPase, complex V). The canonical example for an oxidative phosphorylation system is the mitochondrion of Eukaryotes. In mitochondria, electrons from NADH and succinate oxidation are transferred through NADH dehydrogenase (NDH-1, complex I) and succinate dehydrogenase (complex II), respectively, and via a Rieske/cytochrome b-type RC (quinol:cytochrome c oxidoreductase, R/b, Complex III) to the terminal oxidase (complex IV) that reduces O2 to H2O. Eukaryotes are generally limited to oxygen-dependent (aerobic) respiration. In contrast, Prokaryotic organisms can use, in species-dependent ways, a vast variety of inorganic or organic electron donors and acceptors in their aerobic or anaerobic energy metabolism, each type of redox substrate requiring its dedicated RCs. Part of these processes have been studied extensively over the years and are covered in textbooks. Still, we have a limited understanding of respiratory processes and their variations in Prokaryotes, especially due to the fact that only a small subset (b1%) of these organisms have been cultured [3]. Recent advances in nucleotide-sequencing technologies allowed for mass data collection on environmental samples. Such (meta)genomic studies show an overwhelming variety of RCs in unknown prokaryotes (for example, see [4–15]). Nevertheless, a genomic analysis only provides a blueprint of the physiological capabilities of an organism. Further, translated protein sequences from these (meta)genomes can identify proteins homologous to enzymes with already known functions. As such, these analyses aid in the formulation of new hypotheses, but they cannot directly lead to the discovery of new functions of enzymes or novel assemblies of different proteins into functional complexes, as it is typical for RCs.
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کلمات کلیدی:
[PDF]Membrane-bound electron transport systems of an anammox bacterium iranarze.ir/wp-content/uploads/2016/10/E2261.pdf Jul 25, 2016 - Membrane-bound electron transport systems of an anammox .... treatment plant [19], anammox bacteria have been detected in virtually. Anammox - Wikipedia https://en.wikipedia.org/wiki/Anammox Anammox, an abbreviation for ANaerobic AMMonium OXidation, is a globally important ... The anammox bacteria are characterized by several striking properties: they all possess one .... enzyme or the reactions are catalyzed by different enzyme systems connected via an electron transport chain remains to be investigated. PDF(1670K) - Wiley Online Library onlinelibrary.wiley.com/doi/10.1111/mmi.12816/pdf by S Neumann - 2014 - Cited by 20 - Related articles Sep 28, 2014 - from the anammox bacterium Kuenenia stuttgartiensis. Sarah Neumann,1 .... These electrons then enter the electron transport chain after which ... Anammox - MicrobeWiki https://microbewiki.kenyon.edu/index.php/Anammox Aug 13, 2013 - TEM image of the anammox bacterium Kuenenia stuttgartiensis. ... Depiction of anammox process and the electron transport chain of the ... Archaeal Cell Envelope and Surface Structures: https://books.google.com/books?isbn=2889197735 Sonja-Verena Albers, Mecky Pohlschroder - 2016 Studies of the electron transport chain of the euryarcheon Halobacterium ... in the anammox bacterium Kuenenia stuttgartiensis as evaluated by 31P NMR. Microbial Ecology of Activated Sludge - Page 278 - Google Books Result https://books.google.com/books?isbn=1843390329 Robert Seviour, Per Halkjaer Nielsen - 2010 - Science Identificationof the first Anammoxbacterium, which was namedCandidatus ... electrons per oxidized N2H4 are transferred to an electron transport chain and from ...
