Results 1 to 10 of about 60,887 (99)
The making of a chloroplast [PDF]
Since its endosymbiotic beginning, the chloroplast has become fully integrated into the biology of the host eukaryotic cell. The exchange of genetic information from the chloroplast to the nucleus has resulted in considerable co-ordination in the activities of these two organelles during all stages of plant development. Here, we give an overview of the
Waters, M, Langdale, J
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SYNTHESIS OF CHLOROPLAST DNA IN ISOLATED CHLOROPLASTS [PDF]
Chloroplasts isolated from Euglena gracilis incorporated both tritiated thymidine 5'-triphosphate and tritiated deoxyadenosine 5'-triphosphate into an acid-stable fraction. The incorporation was dependent on the presence of all four deoxynucleoside triphosphates and was sensitive to treatment with deoxyribonuclease and actinomycin D.
N. Steele Scott+2 more
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Chloroplasts are descendants of cyanobacteria and divide by binary fission. Several components of the division apparatus have been identified in the past several years and we are beginning to appreciate the plastid division process at a mechanistic level.
Shin-ya Miyagishima+4 more
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A ‘foldosome’ in the chloroplast? [PDF]
The proper functioning of many cytosolic proteins involved in signal transduction depends on protein folding steps carried out cooperatively by a multichaperone complex containing the Hsp90 and Hsp70 machineries. We have recently found that also in the chloroplast the Hsp90 and Hsp70 machineries form a multichaperone complex, although chloroplast Hsp90
Michael Schroda, Timo Mühlhaus
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The principal function of the chloroplast is to capture solar quanta and to store them in some stable form. We are in the process of trying to construct a totally synthetic system that would simulate some of the reactions of the two photosystems which occur in natural chloroplasts.
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Chloroplast SRP54s are Essential for Chloroplast Development in Rice [PDF]
Abstract Background The chloroplast signal recognition particle 54 (cpSRP54) is known for targeting the light-harvesting complex proteins to thylakoids and plays a critical role for chloroplast development in Arabidopsis, but little is known in rice.
Yongfeng Shi+7 more
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Chloroplast envelope protein encoded by chloroplast genome [PDF]
The gene product of an open reading frame of chloroplast genome, ORF 231 in pea, was immunochemically detected in chloroplast and etioplast envelopes. This is the first protein of a Chloroplast Envelope Membrane encoded by a chloroplast genome. It was named CEM A and the gene, cem A.
Yukiko Sasaki+3 more
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Turnover-synthesis of chloroplast DNA in developing chloroplasts [PDF]
The mechanism for the turnover-synthesis of chloroplast DNA in the absence of net synthesis during the chloroplast maturation in Euglena gracilis was determined. DNA synthesis was measured by incorporation of32Pi into chloroplast DNA. The density label, 15N, was incorporated to examine the mechanism of turnover-synthesis. The newly synthesized segments
C L Hershberger, A M Walfield
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Relocation of chloroplast proteins from cytosols into chloroplasts
The chloroplasts in terrestrial plants play a functional role as a major sensor for perceiving physiological changes under normal and stressful conditions. Despite the fact that the plant chloroplast genome encodes around 120 genes, which are mainly essential for photosynthesis and chloroplast biogenesis, the functional roles of the genes remain to be ...
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Transport of Proteins into Chloroplasts [PDF]
A system has been constructed in vitro for the binding of cytoplasmically synthesized chloroplast proteins to the chloroplast envelope which precedes the uptake into the organelle in vivo.Isolated chloroplast envelopes from young pea or spinach are capable of binding the majority of proteins obtained by translation of poly(A)‐containing RNA from ...
Jörg Pfisterer+2 more
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