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Showing 1 to 10 of 10 for “"phycobilisome"”.
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The Physiological Effects of Phycobilisome Antenna Modification on the Cyanobacterium Synechocystis sp. PCC 6803
<p>Phycobilisomes are the large, membrane extrinsic light harvesting antenna of cyanobacteria. They function to absorb light energy and deliver it efficiently to the photosystems, thereby increasing photosynthetic light absorption. Wild type phycobilisomes in the model organism Synechocystis sp. …
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Pigment orientation changes detected by low temperature linear dichroism spectroscopy: cold-hardening transition in phycobilisome-containing organisms
… dichroism (LD) spectra of Synechococcus 6301 phycobilisome/thylakoid membrane fragments cross-linked in light state 1 and light state 2 with glutaraldehyde showed differences in both chlorophyll a and phycobilin orientation. A decrease in the relative amplitude of the 681nm chlorophyll a …
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Characterization of the phosphorylation of thylakoid membrane proteins from cyanobacterium synechococcus sp. PCC 6301 in light state 1 and light state 2
… for the mechanism of the state transition in phycobilisome (PBS) containing organisms, two involving protein phosphorylation. A procedure for the rapid isolation of thylakoid membranes and PBS fractions from the cyanobacterium Synechococcus m. PCC 6301 in light state 1 and light state 2 was …
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Characterization of cpeY and cpeZ mutants in Fremyella diplosiphon strain UTEX 481
<p>Phycoerythrin (PE) present on the outer phycobilisome (PBS) rods in <em>Fremyella diplosiphon</em> contains covalently attached phycoerythrobilin (PEB) chromophores for efficient photosynthetic light capture. Chromophore ligation on phycobiliprotein subunits occurs through bilin lyase catalyzed …
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Fabrication of a luminescent solar concentrator that minimizes self-absorption losses using inter-chromophore energy transfer
… Finding inspiration from the architecture of phycobilisome antenna complexes, a system of chromophores is developed that minimizes self-absorption through Firster energy transfer. Precise control of intermolecular spacing is achieved through thermal evaporation of small molecule organics. A …
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Flow Cytometric Analysis for Cyanobacteria in 36 New Jersey Freshwater Bodies
… to their autofluorescence properties from the phycobilisome.</p>
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Engineering the optical properties of luminescent solar concentrators at the molecular scale
… transport losses and trapping losses. We used phycobilisomes, a biological light-harvesting complex, as dyes in the LSC collector to circumvent transport losses caused by photon re-absorption. The selfassembled structure of phycobilisomes couples numerous donor chromophores to a handful of …
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Study on polypeptides of cyanobacterial photosystem 2
… Evidence in support of glycosylation of phycobilisome components was also produced with polypeptides of 34.5, 45 78 and 90kDa appearing to be glycosylated. A polypeptide of 50kDa which is closely associated with PS2 was shown to be related , in terms of homology, to a 20kDa DCCD-binding …
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Optimizing electrogenic activity from photosynthetic bacteria in bioelectrochemical systems
… BESs, or biophotovoltaic (BPV) devices. The phycobilisome (PBS) antenna size was altered to modify light absorption. At low to medium light intensities the optimum PBS antenna size was found to consist of one phycocyanin (PC) disc. Incorporating pulsed amplitude fluorescence (PAM) …
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Characterization of Slr1098, a Protein with Similarity to the Bilin Lyase Subunit CpcE from the Cyanobacterium Synechocystis sp. PCC 6803
The goal of this research is to investigate the role of the slr1098 gene in the cyanobacterium Synechocystis sp. PCC 6803, a gene with similarity to cpcE which encodes a subunit of an enzyme involved in bilin attachment to phycocyanin. This protein is hypothesized to be involved in oligomerization …