Functional analysis and expression of the mono-heme containing cytochrome c subunit of alternative complex III in Chloroflexus aurantiacus

2013 ◽  
Vol 535 (2) ◽  
pp. 197-204 ◽  
Author(s):  
Xinliu Gao ◽  
Erica Wunderlich Majumder ◽  
Yisheng Kang ◽  
Hai Yue ◽  
Robert E. Blankenship
Keyword(s):  
Functional Analysis ◽  
Cytochrome C ◽  
Complex Iii ◽  
Chloroflexus Aurantiacus ◽  
C Subunit ◽  
Alternative Complex Iii

The monoheme cytochrome c subunit of Alternative Complex III is a direct electron donor to caa3 oxygen reductase in Rhodothermus marinus

2017 ◽  
Vol 398 (9) ◽  
pp. 1037-1044 ◽  
Author(s):  
Patrícia N. Refojo ◽  
Filipa Calisto ◽  
Miguel A. Ribeiro ◽  
Miguel Teixeira ◽  
Manuela M. Pereira
Keyword(s):  
Cytochrome C ◽  
Electron Donor ◽  
Complex Iii ◽  
Rhodothermus Marinus ◽  
Oxidoreductase Activity ◽  
C Subunit ◽  
Respiratory Chains ◽  
Oxygen Reductase ◽  
Alternative Complex Iii

Abstract Alternative Complex III (ACIII) is an example of the robustness and flexibility of prokaryotic respiratory chains. It performs quinol:cytochrome c oxidoreductase activity, being functionally equivalent to the bc1 complex but structurally unrelated. In this work we further explored ACIII investigating the role of its monoheme cytochrome c subunit (ActE). We expressed and characterized the individually isolated ActE, which allowed us to suggest that ActE is a lipoprotein and to show its function as a direct electron donor to the caa3 oxygen reductase.

scholarly journals The Monoheme c Subunit of Respiratory Alternative Complex III Is Not Essential for Electron Transfer to Cytochrome aa 3 in Flavobacterium johnsoniae

2021 ◽  
Author(s):  
Katarzyna Lorencik ◽  
Robert Ekiert ◽  
Yongtao Zhu ◽  
Mark J. McBride ◽  
Robert B. Gennis ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Energy Conversion ◽  
Protein Complexes ◽  
Complex Iii ◽  
Mitochondrial Complex ◽  
Unknown Mechanism ◽  
Flavobacterium Johnsoniae ◽  
Fundamental Process ◽  
C Subunit ◽  
Alternative Complex Iii

Energy conversion is a fundamental process of all organisms, realized by specialized protein complexes, one of which is alternative complex III (ACIII). ACIII is a functional analogue of well-known mitochondrial complex III, but operates according to a different, still unknown mechanism.

Structure of the Alternative Complex III from Flavobacterium johnsoniae in a Supercomplex with Cytochrome c Oxidase

2020 ◽  
Vol 34 (S1) ◽  
pp. 1-1
Author(s):  
Robert Gennis ◽  
Chang Sun ◽  
Samir Benlekbir ◽  
Padmaja Venkatakrishnan ◽  
Yuhang Wang ◽  
...  
Keyword(s):  
Cytochrome C ◽  
Cytochrome C Oxidase ◽  
Complex Iii ◽  
Flavobacterium Johnsoniae ◽  
Alternative Complex Iii

scholarly journals Membrane topology of beef-heart ubiquinone-cytochrome c reductase (complex III).

1981 ◽  
Vol 256 (21) ◽  
pp. 11132-11136 ◽  
Author(s):  
H. Gutweniger ◽  
R. Bisson ◽  
C. Montecucco
Keyword(s):  
Cytochrome C ◽  
Membrane Topology ◽  
Complex Iii ◽  
Beef Heart ◽  
Cytochrome C Reductase

scholarly journals Structural and functional analysis of aa3-type and cbb3-type cytochrome c oxidases of Paracoccus denitrificans reveals significant differences in proton-pump design

1996 ◽  
Vol 20 (6) ◽  
pp. 1247-1260 ◽  
Author(s):  
Jan-Willem L. Gier ◽  
Mike Schepper ◽  
Willem N. M. Reijnders ◽  
Stef J. Dyck ◽  
Dirk Jan Slotboom ◽  
...  
Keyword(s):  
Functional Analysis ◽  
Cytochrome C ◽  
Proton Pump ◽  
Paracoccus Denitrificans ◽  
Pump Design

scholarly journals Characterization and activity of Alternative Complex III from Rhodothermus marinus

2016 ◽  
Vol 1857 ◽  
pp. e36
Author(s):  
Filipa Calisto ◽  
Patrícia N. Refojo ◽  
Cláudia Bispo ◽  
Cláudia Andrade ◽  
Rui Gardner ◽  
...  
Keyword(s):  
Complex Iii ◽  
Rhodothermus Marinus ◽  
Alternative Complex Iii
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