scholarly journals An ecf mutation in Escherichia coli pleiotropically affecting energy coupling in active transport but not generation or maintenance of membrane potential

1977 ◽  
Vol 252 (23) ◽  
pp. 8582-8588
Author(s):  
J.S. Hong
Keyword(s):  
Escherichia Coli ◽  
Membrane Potential ◽  
Active Transport ◽  
Energy Coupling

scholarly journals Energy coupling to active transport in anaerobically grown mutants of Escherichia Coli K12

1976 ◽  
Vol 154 (3) ◽  
pp. 731-734 ◽  
Author(s):  
S J. Gutowski ◽  
H Rosenberg
Keyword(s):  
Escherichia Coli ◽  
Electron Transport ◽  
Active Transport ◽  
Adenosine Triphosphatase ◽  
Energy Coupling ◽  
High Energy ◽  
Escherichia Coli K12 ◽  
Anaerobic Electron Transport ◽  
Glutamine Uptake

1. Anaerobic uptake of proline requires either the presence of a coupled Mg2+-stimulated adenosine triphosphatase or anaerobic electron transport. 2. Anaerobic uptake of glutamine does not require anaerobic electron transport even in the absence of a coupled Mg+2-stimulated adenosine triphosphatase. 3. These results support previous suggestions [Berger (1973) Proc. Natl. Acad. Sci. U.S.A. 70, 1514––1518; Berger & Heppel (1974) J. Biol. Chem. 249, 7747-7755; Kobayashi, Kin & Anraku (1974) J. Biochem. (Tokyo) 76, 251-261] that two distinct mechanisms of energy coupling to active transport exist in Escherichia coli in that energization of anaerobic proline uptake requires the ‘high-energy membrane state’, whereas the energization of anaerobic glutamine uptake does not.

scholarly journals Energy Coupling in Membrane Vesicles of Escherichia coli

1974 ◽  
Vol 249 (9) ◽  
pp. 2939-2945
Author(s):  
Hajime Hirata ◽  
Karlheinz Altendorf ◽  
Franklin M. Harold
Keyword(s):  
Escherichia Coli ◽  
Membrane Vesicles ◽  
Energy Coupling
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