Novel Na+-Dependent Respiration in Hyperthermophilic Archaeon, Thermococcus onnurineus NA1

Title
Novel Na+-Dependent Respiration in Hyperthermophilic Archaeon, Thermococcus onnurineus NA1
Author(s)
임재규; 이현숙; 이정현; Volker Muller; 강성균
KIOST Author(s)
Lee, Hyun Sook(이현숙)Lee, Jung Hyun(이정현)Kang, Sung Gyun(강성균)
Publication Year
2014-05-01
Abstract
Chemiosmotic energy transduction to ATP synthesis is the most basic process in life form. Throughout the prokaryotic membranes or mitochondrial inner membranes, energy-transducing protein complexes help transform the chemical energy from the cells metabolic intake into various useful forms of energy for the cell. Some of these complexes couple reduction-oxidation (redox) reactions to transporting and establishing chemiosmotic gradient across the membrane to drive otherwise energetically unfavorable process such as ATP synthesis and assorted transporters of other ions and/or molecules. Complex I is the most well known energy transducing enzyme that consists of 14 enzymes in bacteria, transferring electrons from NADH through a complex chain to quinones which process pumps protons across membrane and then generate proton coupled electrical membrane potential. Complex I is an example of the modular structure composed of electron donor/transfer module, connecting module, and intrinsic membrane module in Escherichia coli, has been also thought to have close relationship with Group 4 hydrogenases. The group 4 hydrogenases that widely distributed among bacteria and archaea, have been recognized as a energy converting enzyme composed in modular structure as well as the key enzyme in hydrogen production. Of particular, Mbh hydrogenase from Pyrococcus furiosus which catalyzes the reduction of H+ with electrons derived from ree cells metabolic intake into various useful forms of energy for the cell. Some of these complexes couple reduction-oxidation (redox) reactions to transporting and establishing chemiosmotic gradient across the membrane to drive otherwise energetically unfavorable process such as ATP synthesis and assorted transporters of other ions and/or molecules. Complex I is the most well known energy transducing enzyme that consists of 14 enzymes in bacteria, transferring electrons from NADH through a complex chain to quinones which process pumps protons across membrane and then generate proton coupled electrical membrane potential. Complex I is an example of the modular structure composed of electron donor/transfer module, connecting module, and intrinsic membrane module in Escherichia coli, has been also thought to have close relationship with Group 4 hydrogenases. The group 4 hydrogenases that widely distributed among bacteria and archaea, have been recognized as a energy converting enzyme composed in modular structure as well as the key enzyme in hydrogen production. Of particular, Mbh hydrogenase from Pyrococcus furiosus which catalyzes the reduction of H+ with electrons derived from re
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/26305
Bibliographic Citation
한국미생물학회 국제학술대회, pp.137, 2014
Publisher
한국미생물학회
Type
Conference
Language
English
Publisher
한국미생물학회
Related Researcher
Research Interests

marine biotechnology,molecular microbiology,해양생명공학,분자미생물학

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