Photosynthesis was well-established on the earth at least 3.5 thousand million years ago,
and it is widely believed that these ancient organisms had similar metabolic capabilities to …

Photosynthetic organisms transform the energy of sunlight into chemical potential in a
specialized membrane-bound pigment-protein complex called the reaction center. Following …

Genome-resolved environmental metagenomic sequencing has uncovered substantial
previously unrecognized microbial diversity relevant for understanding the ecology and …

In 1961, two concepts of energy coupling were published, one by Mitchell I and the other by
Williams z, both dealing with the transfer of charges (electrons, H÷, OH-) in biological energy …

Green bacteria are a diverse group of chlorophototrophic organisms belonging to three
major taxa within the domain Bacteria: Chlorobi, Chloroflexi, and Acidobacteria. Most …

The primary processes of photosynthesis lead to transformation of solar radiation into
electrochemical Gibbs energy-the driving force for life on Earth. These intricate and …

A thermophilic photosynthetic purple bacterium was isolated from the waters of a hot spring
in Yellowstone National Park, Wyoming. The organism differs from all known purple bacteria …

Due to the great abundance of genomes and protein structures that today span a broad
diversity of organisms, now more than ever before, it is possible to reconstruct the molecular …

A comparison of spectral properties of reaction centers from Chloroflexus aurantiacus and
Rhodopseudomonas sphaeroides (R-26) is reported. Treatment of reaction centers from …

Type II reaction centers (RCs) have two acceptor quinones that act in series. The primary
quinone, QA, cycles between the oxidized quinone and singly reduced semiquinone. QA is …