کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10795208 | 1052561 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chloroplast NDH: A different enzyme with a structure similar to that of respiratory NADH dehydrogenase
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کلمات کلیدی
photosystem I/IIPTOXNPQNAINDHPMFblue-native - آبی بومیCyclic electron transport - انتقال الکترون سیسیلNon-photochemical quenching - خنک سازی غیر فتوشیمیاییChloroplast - سبزدیسه، کلروپلاستcyt - سیتcytochrome - سیتوکرومphotosystem I - عکس سیستم منPhotosynthesis - فتوسنتزFerredoxin - فریدوکسیینComplex I - مجتمع IProtein assembly - مونتاژ پروتئینproton motive force - نیروی حرکتی پروتونplastid terminal oxidase - پلاستیک ترمینال اکسیدازplastoquinone - پلواستیکینون
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Eleven genes encoding chloroplast NADH dehydrogenase-like (NDH) complex have been discovered in plastid genomes on the basis of their homology with genes encoding respiratory complex I. Despite this structural similarity, chloroplast NDH and its evolutionary origin NDH-1 in cyanobacteria accept electrons from ferredoxin (Fd), indicating that chloroplast NDH is an Fd-dependent plastoquinone (PQ) reductase rather than an NAD(P)H dehydrogenase. In Arabidopsis thaliana, chloroplast NDH interacts with photosystem I (PSI); this interaction is needed to stabilize NDH, especially under high light. On the basis of these distinct characters of chloroplast and cyanobacterial NDH, it can be distinguished as a photosynthetic NDH from respiratory complex I. In fact, chloroplast NDH forms part of the machinery of photosynthesis by mediating the minor pathway of PSI cyclic electron transport. Along with the antimycin A-sensitive main pathway of PSI cyclic electron transport, chloroplast NDH compensates the ATP/NADPH production ratio in the light reactions of photosynthesis. In this review, I revisit the original concept of chloroplast NDH on the basis of its similarity to respiratory complex I and thus introduce current progress in the field to researchers focusing on respiratory complex I. I summarize recent progress on the basis of structure and function. Finally, I introduce the results of our examination of the process of assembly of chloroplast NDH. Although the process requires many plant-specific non-subunit factors, the core processes of assembly are conserved between chloroplast NDH and respiratory complex I. This article is part of a Special Issue entitled Respiratory complex I, edited by Volker Zickermann and Ulrich Brandt.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochimica et Biophysica Acta (BBA) - Bioenergetics - Volume 1857, Issue 7, July 2016, Pages 1015-1022
Journal: Biochimica et Biophysica Acta (BBA) - Bioenergetics - Volume 1857, Issue 7, July 2016, Pages 1015-1022
نویسندگان
Toshiharu Shikanai,