دانلود رایگان مقاله لاتین غشا فتوسنتزی در جلبک از سایت الزویر
عنوان فارسی مقاله:
معماری ابرمولکولی غشا فتوسنتزی در جلبک قرمز در پاسخ به گرسنگی نیتروژن
عنوان انگلیسی مقاله:
Supramolecular architecture of photosynthetic membrane in red algae in response to nitrogen starvation
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
The phycobilisome (PBS) is the main light harvesting complex in cyanobacteria and red algae [1,2], and it is among the largest light harvesting antennae in all photosynthetic organisms with an estimated molecular weight of 4.5–23 × 106 Da [3,4]. PBSs are attached to the stromal side of thylakoid membranes in a highly aggregated form and differ from the light harvesting complexes in green plants which are integrated in thylakoid membranes [5,6]. PBSs absorb and transfer solar energy with high efficiency to the photosystems that are located within thylakoid membrane [7–9]. The content of PBSs in cells is known to vary depending upon the growth conditions, and under optimal growth conditions, PBSs could account for half of all of the total soluble protein in the cells [10,11]. PBSs are composed of chromophore-linked phycobiliproteins and colorless hydrophobic linker polypeptides. Phycobiliproteins can be categorized into four main groups based on their spectra properties: allophycocyanin (APC), phycocyanin (PC), phycoerythrin (PE) and phycoerythrocyanin (PEC) [12]. Along with linker polypeptides, phycobiliproteins assemble into high molecular mass complexes, the PBSs [13]. Based on electron microscopic observations, PBSs can be sorted into three topological types: hemidiscoidal, hemispherical and bundle-shaped [14]. Hemidiscoidal PBSs are found in both cyanobacteria and red algae, and hemispherical PBS are in red algae [15]. Bundleshaped PBSs are found in only one species of cyanobacteria, Gloeobacter violaceus [16]. Transmission electron microscopy (TEM) is one of the most important tools for studying the ultrastructure of thylakoid membranes and their associated supramolecular complexes in photosynthetic organisms. TEM provides abundant direct observations and promotes photosynthesis research. In recent years, another important tool, atomic force microscopy (AFM), has proven to be a unique and powerful method for studying the supramolecular architecture of native photosynthetic membranes under near-physiological conditions [17]. Although photosynthetic membranes from purple bacteria [18,19] and higher plants [20–24] have been studied in detail with AFM, little research has been performed on the photosynthetic membranes of cyanobacteria or algae with AFM. Our previous study has reported the first AFM observation of the native supramolecular architecture of the photosynthetic membranes from the red alga Porphyridium cruentum
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کلمات کلیدی:
Photosynthetic membrane topography: quantitative in situ localization ... www.pnas.org/content/89/21/10021.abstract by L Mustardy - 1992 - Cited by 37 - Related articles Nov 1, 1992 - Specific labeling of PSI was 25% in GL and RL membranes, and PSII ... Watching the Native Supramolecular Architecture of Photosynthetic ... Watching the photosynthetic apparatus in native membranes - PNAS www.pnas.org/content/101/31/11293.abstract by S Scheuring - 2004 - Cited by 166 - Related articles Aug 3, 2004 - The long-range organization of a native photosynthetic membrane. ... Watching the Native Supramolecular Architecture of Photosynthetic ... The architecture of photosynthetic membranes: lateral and transverse ... www.cell.com/trends/biochemical-sciences/abstract/0968-0004(82)90014-7 by JM Anderson - 1982 - Cited by 174 - Related articles There is a marked transverse asymmetry in the organization of the supramolecular complexes involved in light-harvesting, electron transfer and proton ... Light-Harvesting Antennas in Photosynthesis https://books.google.com/books?isbn=9401720878 Beverley Green, W.W. Parson - 2013 - Science Mullineaux CW (1999) The thylakoid membranes of cyanobacteria: Structure, ... Visualization of the supramolecular architecture of chlorosomes (Chlorobium ... Photosynthesis III: Photosynthetic Membranes and Light Harvesting ... https://books.google.com/books?isbn=3642709362 L. Andrew Staehelin, Charles J. Arntzen - 2013 - Science Photosynthetic Membranes and Light Harvesting Systems L. Andrew ... of the supramolecular architecture of photosynthetic membranes of blue-green, red and ... Photosynthetic Reaction Center - Page 95 - Google Books Result https://books.google.com/books?isbn=0323140424 Johann Deisenhofer, J. R. Norris - 2012 - Science 4 Photosynthetic Light-Harvesting Systems tems, Organization, and ... of the supramolecular architecture of photosynthetic membranes of blue-green, red and ...
