NADH-quinone oxidoreductase subunit A, encoded by the nuoA gene, is a component of the NADH dehydrogenase complex (Complex I) in bacteria. This complex is responsible for transferring electrons from NADH to quinones in the respiratory chain, generating a proton gradient across the membrane that drives ATP synthesis . The subunit A is typically embedded in the inner membrane and contributes to the proton pumping activity of the complex.
Pelodictyon phaeoclathratiforme is a brown-colored member of the Chlorobiaceae family, characterized by its net-like colonies and the presence of gas vacuoles. It is strictly anaerobic and phototrophic, using sulfide, sulfur, and thiosulfate as electron donors during anaerobic phototrophic growth . While there is no specific information on the recombinant nuoA from this species, understanding its native metabolism can provide insights into potential applications of recombinant proteins.
| Feature | General Function in Bacteria | Specific to Pelodictyon phaeoclathratiforme |
|---|---|---|
| Electron Transfer | Transfers electrons from NADH to quinones | Limited specific data available |
| Proton Pumping | Generates proton gradient across the membrane | Not specifically studied in P. phaeoclathratiforme |
| Metabolic Role | Essential for respiratory chain function | Important in anaerobic phototrophic metabolism |
| Expression and Purification | Typically expressed in host organisms like E. coli | Not reported for recombinant nuoA from P. phaeoclathratiforme |
KEGG: pph:Ppha_1873
STRING: 324925.Ppha_1873