نتایج جستجو برای: synechocystis
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Photosystem II (PSII), the enzyme responsible for photosynthetic oxygen evolution, is a rapidly turned over membrane protein complex. However, the factors that regulate biogenesis of PSII are poorly defined. Previous proteomic analysis of the PSII preparations from the cyanobacterium Synechocystis sp PCC 6803 detected a novel protein, Psb29 (Sll1414), homologs of which are found in all cyanobac...
Many of the ribosomal protein (RP) genes in both bacterial and chloroplast genomes occur, for reasons not yet understood, in operons that include nonribosomal genes. Here we report such an operon organization in a cyanobacterium (Synechocystis PCC6803) involving the genes for four RPs that are important in the GTPase function of the ribosome and the aroC gene encoding chorismate synthase, a key...
BACKGROUND Cyanobacteria are phototrophic prokaryotes that convert inorganic carbon as CO2 into organic compounds at the expense of light energy. They need only inorganic nutrients and can be cultivated to high densities using non-arable land and seawater. This has made cyanobacteria attractive organisms for the production of biofuels and chemical feedstock. Synechocystis sp. PCC 6803 is one of...
BACKGROUND Recent studies using transcript and metabolite profiles of wild-type and gene deletion mutants revealed that photorespiratory pathways are essential for the growth of Synechocystis sp. PCC 6803 under atmospheric conditions. Pool size changes of primary metabolites, such as glycine and glycolate, indicated a link to photorespiration. METHODOLOGY/PRINCIPAL FINDINGS The (13)C labellin...
Thylakoid membranes isolated from the cyanobacterium Synechocystis sp. strain PCC6803 were capable of desaturating the acyl groups in monogalactosyl diacylglycerol. This desaturation reaction required the reduced form of ferredoxin.
Title of Document: NEW INSIGHT INTO ISOPRENOID BIOSYNTHESIS IN THE CYANOBACTERIUM SYNECHOCYSTIS SP. STRAIN PCC 6803 Kelly Ann Poliquin, Doctor of Philosophy, 2006 Directed By: Professor Elisabeth Gantt, Department of Cell Biology and Molecular Genetics In cyanobacteria, many compounds including chlorophylls, carotenoids, and quinones are synthesized from the isoprenoid precursors isopentenyl di...
Nitrogen limitation induces dormancy in the cyanobacterium Synechocystis. During dormancy, the bacterium neither photosynthesizes nor divides, yet it maintains low-level metabolic activity. A new study shows how provision of a nitrogen source initiates a regimented genetic program that initially kick-starts metabolism and ultimately photosynthesis.
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