Sulfur Isotope Effects of Dissimilatory Sulfite Reductase [PDF]
Frontiers in Microbiology, 2015 The precise interpretation of environmental sulfur isotope records requires a quantitative understanding of the biochemical controls on sulfur isotope fractionation by the principle isotope-fractionating process within the S cycle, microbial sulfate ...
William D. Leavitt +6 more
doaj +7 more sources
Structural evolution of the ancient enzyme, dissimilatory sulfite reductase. [PDF]
Proteins, 2022 Abstract Dissimilatory sulfite reductase is an ancient enzyme that has linked the global sulfur and carbon biogeochemical cycles since at least 3.47 Gya. While much has been learned about the phylogenetic distribution and diversity of DsrAB across environmental gradients, far less is known about the structural ...
Colman DR +6 more
europepmc +6 more sources
The Maize Sulfite Reductase Is Involved in Cold and Oxidative Stress Responses [PDF]
Frontiers in Plant Science, 2018 Sulfite reductase (SiR) functions in sulfate assimilation pathway. However, whether it is involved in stress response in crops is largely unknown. Here, the SiR ortholog from Zea mays (ZmSiR) was characterized.
Zongliang Xia +3 more
doaj +2 more sources
Impairment of Sulfite Reductase Decreases Oxidative Stress Tolerance in Arabidopsis Thaliana [PDF]
Frontiers in Plant Science, 2016 As an essential enzyme in the sulfate assimilation reductive pathway, sulfite reductase (SiR) plays important roles in diverse metabolic processes such as sulfur homeostasis and cysteine metabolism.
Meiping Wang +3 more
doaj +2 more sources
Sulfite Reductase Co-suppression in Tobacco Reveals Detoxification Mechanisms and Downstream Responses Comparable to Sulfate Starvation [PDF]
Frontiers in Plant Science, 2018 Sulfite reductase (SIR) is a key enzyme in higher plants in the assimilatory sulfate reduction pathway. SIR, being exclusively localized in plastids, catalyzes the reduction of sulfite (SO32−) to sulfide (S2−) and is essential for plant life.
Marcel Naumann +7 more
doaj +2 more sources
Regulation and Maturation of the Shewanella oneidensis Sulfite Reductase SirA. [PDF]
Sci Rep, 2020 AbstractShewanella oneidensis, a metal reducer and facultative anaerobe, expresses a large number of c-type cytochromes, many of which function as anaerobic reductases. All of these proteins contain the typical heme-binding motif CXXCH and require the Ccm proteins for maturation. Two c-type cytochrome reductases also possess atypical heme-binding sites,
Brockman KL +4 more
europepmc +4 more sources
Structure of dimerized assimilatory NADPH-dependent sulfite reductase reveals the minimal interface for diflavin reductase binding [PDF]
Nature CommunicationsEscherichia coli NADPH-dependent assimilatory sulfite reductase (SiR) reduces sulfite by six electrons to make sulfide for incorporation into sulfur-containing biomolecules. SiR has two subunits: an NADPH, FMN, and FAD-binding diflavin flavoprotein and a
Behrouz Ghazi Esfahani +8 more
doaj +2 more sources
The interaction of ferredoxin-linked sulfite reductase with ferredoxin [PDF]
FEBS Letters, 1987 Spinach sulfite reductase has been shown to co‐migrate during gel filtration chromatography at low ionic strength with spinach ferredoxin. No co‐migration was observed at high ionic strength. These results indicate that the two proteins form a high‐affinity, electrostatically stabilized complex, as had previously been demonstrated for three other ...
Masakazu Hirasawa +2 more
exaly +2 more sources
Zero-valent sulfur is the product of assimilatory sulfite reductase and a substrate of cysteine synthase [PDF]
Applied and Environmental MicrobiologyThe process of the assimilatory sulfate reduction consists of sulfate reduction to hydrogen sulfide (H2S) and then H2S assimilation for cysteine synthesis.
Qun Cao +5 more
doaj +2 more sources
Journal of Experimental Botany, 2021 Abstract Chloroplast-localized adenosine-5’-phosphosulphate reductase (APR) generates sulfite and plays a pivotal role in reduction of sulfate to cysteine. The peroxisome-localized sulfite oxidase (SO) oxidizes excess sulfite to sulfate.
Aizat Bekturova +2 more
exaly +5 more sources