F. Reyes

TL;DR: The phenotypes of defined insertion mutants constructed for each gene also indicate that periplasmic nitrate reductase from R. sphaeroides DSM 158 is a dimeric complex of a 90kDa catalytic subunit and a 15kDa cytochrome c (NAPB), which receives electrons from a membrane‐anchored tetrahaem protein, thus allowing electron flow between membrane andPeriplasm.

TL;DR: The results suggest that chlorate and TMAO can be used as ancillary oxidants by Rhodobacter strains and that a single enzyme could be responsible for nitrate and chlorate reduction inR.

TL;DR: Different mutant strains carrying defined polar and non-polar insertions in each nap gene were constructed and characterization of these mutant strains demonstrates the participation of the nap gene products in the periplasmic nitrate reduction in R. sphaeroides.

TL;DR: Two types of dissimilatory nitrate reductases have been found in strains from Rhodobacter sphaeroides, one of them is coupled to a complete denitrifying pathway, and the other is a periplasmic protein whose physiological role seems to be the dissipation of excess reducing power, thus improving photoanaerobic growth.

TL;DR: Results that a single enzyme could reduce both nitrate and chlorate in R. sphaeroides DSM 158 show that this strain is able to use chlorate as an ancillary oxidant.