Protein Family Models

Bacterial polysulfide reductase is an integral membrane protein complex responsible for quinone-coupled reduction of polysulfide, a process important in extreme environments such as deep-sea vents and hot springs. Polysulfides are a class of compounds composed of chains of sulfur atoms, which in their simplest form are present as an anion with general formula Sn(2-). In nature, polysulfides are found in particularly high concentrations in extreme volcanic or geothermically active environments. Here, the reduction and oxidation of polysulfides are vital processes for many bacteria and are essential steps in the global sulfur cycle. In particular, the reduction of polysulfide to hydrogen sulfide in these environments is usually linked to energy-generating respiratory processes, supporting growth of many microorganisms, particularly hyperthermophiles. [1]. 18536726. Molecular mechanism of energy conservation in polysulfide respiration. Jormakka M, Yokoyama K, Yano T, Tamakoshi M, Akimoto S, Shimamura T, Curmi P, Iwata S;. Nat Struct Mol Biol. 2008;15:730-737. (from Pfam)

Date:

2024-10-16

Members of this family include the

Gene:

nrfD

Date:

2024-10-16

polysulfide reductase NrfD/PsrC family protein may be a component of polysulfide reductase, an integral membrane protein complex responsible for quinone-coupled reduction of polysulfide| cytochrome c nitrite reductase subunit NrfD family protein similar to Escherichia coli cytochrome c nitrite reductase subunit NrfD which is a membrane protein and probably involved in transferring electrons from the quinone pool to the type-c cytochromes

Date:

2017-03-02