- "Ligand Responses of Vfr, the Virulence Factor Regulator from Pseudomonas aeruginosa"
Serate J, Roberts GP, Berg O, Journal of Bacteriology 193(18): 4859-4868 Sep 2011. Here we report that Vfr has important functional differences from CRP in terms of ligand sensing and response.
- "The Poor Growth of Rhodospirillum rubrum Mutants Lacking RubisCO Is Due to the Accumulation of Ribulose-1,5-Bisphosphate"
Wang D, Zhang YP, Pohlmann EL, et al., Journal of Bacteriology 193(13): 3293-3303 Jul 2011. However, we present analyses of cbbM mutants in Rhodospirillum rubrum that indicate that toxicity is the result of an elevated intracellular pool of ribulose-1,5-bisphosphate (RuBP).
- "Sustaining N-2-Dependent Growth in the Presence of CO"
Kerby RL, Roberts GP, Journal of Bacteriology 193 (3): 774-777 Feb 2011. Low levels of carbon monoxide inhibit the N-2-dependent growth of Rhodospirillum rubrum unless the similar to 100-residue CowN protein is expressed.
- "Elimination of Rubisco alters the regulation of nitrogenase activity and increases hydrogen production in Rhodospirillum rubrum"
Wang D, Zhang YP, Welch E, et al., International Journal of Hydrogen Energy 35 (14): 7377-7385 Jul 2010. The combination of mutations in nifA, draT and cbbM greatly increased H-2 production of R. rubrum, especially in the presence of excess of ammonium. Furthermore, these mutants are able to produce H-2 over a much longer time frame than the wild type, increasing the potential of these recombinant strains for the biological production of H-2.