Although the biogeochemistry of the two environmentally hazardous compounds arsenic
and sulfide has been extensively investigated, the biological interference of these two toxic …

Eutrophication and deoxygenation possibly occur in coastal waters due to excessive
nutrients from agricultural and aquacultural activities, leading to sulfide accumulation …

Sulfide inhibits oxygenic photosynthesis by blocking electron transfer between H2O and the
oxygen-evolving complex in the D1 protein of Photosystem II. The ability of cyanobacteria to …

Arsenic is a ubiquitous contaminant and a toxic metalloid which presents two main redox
states in nature: arsenite [AsIII] and arsenate [AsV]. Arsenic resistance in Synechocystis sp …

Abstract Background The unicellular cyanobacterium Synechocystis sp. PCC 6803 is a
model microbe for studying biochemistry, genetics and molecular biology of photobiological …

Arsenic is one of the most important global environmental pollutants. Here we show that the
cyanobacterium Synechocystis sp. strain PCC 6803 contains an arsenic and antimony …

Homologues of the genes cysB, cysl, cysH, cysD, cysN, and selD were identified in the
genome of the phototrophic purple sulfur bacterium Allochromatium vinosum (formerly …

Sulfur is one of the most versatile elements in life due to its reactivity in different oxidation
and reduction states. In contrast to the assimilatory provision of sulfur-containing cell …

Most photosynthetic bacteria can grow photoautotrophically using inorganic sulfur
compounds (ie sulfide, sulfur, polysulfides, thiosulfate, or sulfite) as electron donors for CO 2 …

In the phototrophic sulfur bacterium Allochromatium vinosum, sulfur of oxidation state zero
stored in intracellular sulfur globules is an obligate intermediate during the oxidation of …