Manganese impairs the QoxABCD terminal oxidase leading to respiration‐associated toxicity

2021 ◽  
Author(s):  
Ankita J. Sachla ◽  
Yuanchan Luo ◽  
John D. Helmann
Keyword(s):  
Terminal Oxidase

scholarly journals Cardiolipin enhances the enzymatic activity of cytochrome bd and cytochrome bo3 solubilized in dodecyl-maltoside

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Amer H. Asseri ◽  
Albert Godoy-Hernandez ◽  
Hojjat Ghasemi Goojani ◽  
Holger Lill ◽  
Junshi Sakamoto ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Oxygen Consumption ◽  
Integral Membrane Proteins ◽  
Terminal Oxidase ◽  
Geobacillus Thermodenitrificans ◽  
E Coli ◽  
Cytochrome Bd ◽  
Cytochrome Bo3 ◽  
Dodecyl Maltoside ◽  
Consumption Activity

AbstractCardiolipin (CL) is a lipid that is found in the membranes of bacteria and the inner membranes of mitochondria. CL can increase the activity of integral membrane proteins, in particular components of respiratory pathways. We here report that CL activated detergent-solubilized cytochrome bd, a terminal oxidase from Escherichia coli. CL enhanced the oxygen consumption activity ~ twofold and decreased the apparent KM value for ubiquinol-1 as substrate from 95 µM to 35 µM. Activation by CL was also observed for cytochrome bd from two Gram-positive species, Geobacillus thermodenitrificans and Corynebacterium glutamicum, and for cytochrome bo3 from E. coli. Taken together, CL can enhance the activity of detergent-solubilized cytochrome bd and cytochrome bo3.

A novel a-type terminal oxidase from Sulfolobusacidocaldarius with cytochrome c oxidase activity

1989 ◽  
Vol 165 (3) ◽  
pp. 1110-1114 ◽  
Author(s):  
Takayoshi Wakagi ◽  
Tatsuo Yamauchi ◽  
Tairo Oshima ◽  
Michele Müller ◽  
Angello Azzi ◽  
...  
Keyword(s):  
Cytochrome C ◽  
Cytochrome C Oxidase ◽  
Oxidase Activity ◽  
Terminal Oxidase

In vitro characterization of a plastid terminal oxidase (PTOX)

2003 ◽  
Vol 270 (18) ◽  
pp. 3787-3794 ◽  
Author(s):  
Eve-Marie Josse ◽  
Jean-Pierre Alcaraz ◽  
Anne-Marie Laboure ◽  
Marcel Kuntz
Keyword(s):  
Terminal Oxidase ◽  
In Vitro Characterization ◽  
Plastid Terminal Oxidase
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