6533b823fe1ef96bd127e1e1

RESEARCH PRODUCT

Metabolic Engineering of Bacterial Respiration: High vs. Low P/O and the Case of Zymomonas mobilis

Elina BaloditeUldis KalnenieksReinis Rutkis

subject

0301 basic medicineHistologyAerobic bacterialcsh:Biotechnologyrespiratory chainBiomedical EngineeringRespiratory chainBioengineering02 engineering and technologyOxidative phosphorylationZymomonas mobilisMetabolic engineeringredox balance03 medical and health scienceslcsh:TP248.13-248.65RespirationBioprocessstress resistencebiologyenergy couplingChemistryZymomonas mobilis021001 nanoscience & nanotechnologybiology.organism_classificationElectron transport chain030104 developmental biologyBiochemistry0210 nano-technologymetabolic engineeringBiotechnology

description

Respiratory chain plays a pivotal role in the energy and redox balance of aerobic bacteria. By engineering respiration, it is possible to alter the efficiency of energy generation and intracellular redox state, and thus affect the key bioprocess parameters: cell yield, productivity and stress resistance. Here we summarize the current metabolic engineering and synthetic biology approaches to bacterial respiratory metabolism, with a special focus on the respiratory chain of the ethanologenic bacterium Zymomonas mobilis. Electron transport in Z. mobilis can serve as a model system of bacterial respiration with low oxidative phosphorylation efficiency. Its application for redox balancing and relevance for improvement of stress tolerance are analyzed.

10.3389/fbioe.2019.00327https://www.frontiersin.org/article/10.3389/fbioe.2019.00327/full