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Photosynthetic Reaction Center Mutagenesis via Chimeric Rescue of a Non-functional Rhodobacter capsulatus puf Operon with Sequences from Rhodobacter sphaeroides
photosynthesis recombination bacteria energy transfer antenna
2016/5/23
Photosynthetically active chimeric reaction centers which utilize genetic information from both Rhodobacter capsulatus and Rb. sphaeroides puf operons were isolated using a novel method termed chimeri...
Spectroscopic and Redox Properties of Sym1 and (M)F195H Rhodobacter capsulatus Reaction Center Symmetry Mutants Which Affect the Initial Electron Donor
Circular Dichroism Electron Spin Resonance Spectroscopy Electron Transport Genes, Bacterial Kinetics Light-Harvesting Protein Complexes Mutation Oxidation-Reduction Photosynthetic Reaction Center Complex Proteins Plasmids Protein Conformation Rhodobacter capsulatus Spectrophotometry
2016/5/23
The redox properties, absorption, electroabsorption, CD, EPR, and P+QA- recombination kinetics have been measured for the special pairs of two mutants of Rhodobacter capsulatus reaction centers involv...
Biochemical Characterization and Electron-Transfer Reactions of sym1,a Rhodobacter capsulatus Reaction Center Symmetry Mutant which Affects the Initial Electron Donor
Biochemical Characterization Electron-Transfer Reactions sym1 Rhodobacter capsulatus Reaction Center Initial Electron Donor
2016/5/23
A 51 bp section of the Rhodobacter capsulatus photosynthetic reaction center M subunit gene (nucleotides M562-M612 of the pufM structural sequence) encoding amino acids M187-M203 was replaced by the h...
Photochemical Hole-Burning Spectroscopy of a Photosynthetic Reaction Center Mutant with Altered Charge Separation Kinetics:Properties and Decay of the Initially Excited State
PRIMARY ELECTRON-DONOR VIRIDIS REACTION CENTERS BACTERIAL REACTION CENTERS RHODOPSEUDOMONAS-VIRIDIS RHODOBACTER-SPHAEROIDES BURNED SPECTRA PURPLE BACTERIA LOW-TEMPERATURE ABSORPTION HETERODIMER
2016/5/23
Photochemical hole-burning spectra have been obtained for the lowest energy electronic absorption band of the primary electron donor P of photosynthetic reaction centers (RCs) that exhibit different r...
Stark Effect Spectroscopy of Carotenoids in Reaction Center and Antenna Complexes from Photosynthetic Bacteria
Stark effect Electric field effect Carotenoid Carotenoid bandshift
2016/5/23
The effects of electric fields on the absorption spectra of the carotenoids spheroidene and spheroidenone in photosynthetic antenna and reaction center complexes (wild-type and several mutants) from p...
Stark Effect Spectroscopy of the Rhodobacter sphaeroides Reaction Center Heterodimer Mutant
Rhodobacter sphaeroides Macromolecular Substances Light-Harvesting Protein Complexes Photosynthetic Reaction Center Complex Proteins Bacterial Proteins Spectrophotometry Mutation Thermodynamics
2016/5/23
The effect of an electric field has been measured on the absorption spectrum (Stark effect) of the heterodimer mutant (M)H202L of Rhodobacter sphaeroides reaction centers, where the primary electron d...
Chimeric Rescue of Rb. capsulatus Reaction Center Genes with Sequences from Rb.sphaeroides
Chimeric Rescue Rb. capsulatus Reaction Center Genes Rb.sphaeroides
2016/5/23
Site-directed mutagenesis is becoming a very important technique in the study of photosynthetic reaction center structure-function relationships. However, there are certain disadvantages associated wi...
A Structural Model for the Photosynthetic Reaction Center
Structural Model Photosynthetic Reaction Center
2016/5/20
We describe here the synthesis and characterization of the solution conformation of a molecule which brings into close proximity the principal molecular components believed to participate in the initi...
A Covalently Bound Dimeric Derivative of Pyrochlorophyllide a. A Possible Model for Reaction Center Chlorophyll
Dimeric Derivative Pyrochlorophyllide Reaction Center Chlorophyll
2016/5/20
Molecular aggregation of chlorophyll has been the subject of intense study in several While there is good evidence for keto carbonyl-Mg interactions in nonbasic solvents, there is much less structural...
A Cell Senses Its Curves:New Research from the Whitman Center
Cell Senses Curves Whitman Center
2016/5/6
Can a cell sense its own shape? Working in the MBL’s Whitman Center research community, scientists from Dartmouth College developed an ingenious experiment to ask this question. Their concl...
Fermentation Festival Leads to Rapid Response System at Center for Microbiome Innovation
Fermentation Festiva Response System at Center Microbiome Innovation
2016/5/6
The personalized collections of microorganisms and molecules found in, on and around us — known as our microbiome and metabolome, respectively — are increasingly recognized for their influences on eve...
Outcome of home parenteral nutrition in 251 children over a 14-y period: report of a single center
home parenteral nutrition children outcome complications growth
2018/11/30
Background: Parenteral nutrition (PN) is the main treatment for intestinal failure.
Objective: We aimed to review the indications for home parenteral nutrition (HPN) in children and describe the outc...
NSF funds new $5.9 million Arctic data center at the University of California,Santa Barbara
NSF Arctic data center University of California Santa Barbara
2016/3/28
The National Science Foundation (NSF) has made a five-year, $5.9 million award to a national partnership, led by the National Center for Ecological Analysis and Synthesis (NCEAS) at the University of ...
Galactic center's gamma rays unlikely to originate from dark matter,evidence shows
Galactic center gamma rays dark matter
2016/2/23
Bursts of gamma rays from the center of our galaxy are not likely to be signals of dark matter but rather other astrophysical phenomena such as fast-rotating stars called millisecond pulsars, accordin...
One-step generation of multipartite entanglement among nitrogen-vacancy center ensembles
One-step generation multipartite entanglement nitrogen-vacancy center ensembles
2016/1/22
We describe a one-step, deterministic and scalable scheme for creating macroscopic arbitrary entangled coherent states (ECSs) of separate nitrogen-vacancy center ensembles (NVEs) that couple to a supe...