Structural Organization of Photosynthetic Apparatus in Agranal Chloroplasts of Maize
نویسندگان
چکیده
منابع مشابه
Circular dichroism spectra of granal and agranal chloroplasts of maize.
Granum-containing chloroplasts from mesophyll cells of maize (Zea mays L. var. MV 861) leaves exhibited circular dichroism spectra with a large double signal; peaks at 696 nm (+) and 680 nm (-). In the circular dichroism spectra obtained with agranal chloroplasts of bundle sheath cells, this large double signal is absent. Separation of grana lamellae, in a medium of low salt concentration and i...
متن کاملStructure of the Photosynthetic Apparatus in Protein-embedded Chloroplasts
The photosynthetic apparatus in higher plants has been found to be located in complex lipoprotein membrane systems in the chloroplasts called grana. Electron microscopy has provided invaluable information in determining the fine structure of grana (6-9, 11, 21, 28-30). However, due to the harsh methods employed in fixation (usually by osmium tetroxide or potassium permanganate) and dehydration ...
متن کاملEvidence for a role of VIPP1 in the structural organization of the photosynthetic apparatus in Chlamydomonas.
The vesicle-inducing protein in plastids (VIPP1) was suggested to play a role in thylakoid membrane formation via membrane vesicles. As this functional assignment is under debate, we investigated the function of VIPP1 in Chlamydomonas reinhardtii. Using immunofluorescence, we localized VIPP1 to distinct spots within the chloroplast. In VIPP1-RNA interference/artificial microRNA cells, we consis...
متن کاملSupramolecular organization of the photosynthetic apparatus of Rhodobacter sphaeroides.
Native tubular membranes were purified from the purple non-sulfur bacterium Rhodobacter sphaeroides. These tubular structures contain all the membrane components of the photosynthetic apparatus, in the relative ratio of one cytochrome bc1 complex to two reaction centers, and approximately 24 bacteriochlorophyll molecules per reaction center. Electron micrographs of negative-stained membranes di...
متن کاملInfluence of light on the heat sensitivity of the photosynthetic apparatus in isolated spinach chloroplasts.
The most heat-sensitive functions of chloroplasts in Spinacia oleracea L. including the stromal carboxylation reaction, the light-induced electrical field gradient across the thylakoid membrane, as well as the overall photosynthetic CO(2) fixation were less affected by heat if chloroplasts were heated in the light: 50% inactivation occurred around 35 degrees C in the dark and around 40 degrees ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2008
ISSN: 0021-9258
DOI: 10.1074/jbc.m803711200