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

Patrícia N. Refojo; Filipa Calisto; Miguel A. Ribeiro; Miguel Teixeira; Manuela M. Pereira

doi:10.1515/hsz-2016-0323

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

Patrícia N. Refojo, Filipa Calisto, Miguel A. Ribeiro, Miguel Teixeira, Manuela M. Pereira

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

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.

Original language	English
Pages (from-to)	1037-1044
Number of pages	8
Journal	Biological Chemistry
Volume	398
Issue number	9
DOIs	https://doi.org/10.1515/hsz-2016-0323
Publication status	Published - 28 Aug 2017

Keywords

bc complex
cytochrome c oxidase
lipoprotein
quinone
respiratory chain

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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.",

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AU - Refojo, Patrícia N.

AU - Calisto, Filipa

AU - Ribeiro, Miguel A.

AU - Teixeira, Miguel

AU - Pereira, Manuela M.

PY - 2017/8/28

Y1 - 2017/8/28

N2 - 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.

AB - 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.

KW - bc complex

KW - cytochrome c oxidase

KW - lipoprotein

KW - quinone

KW - respiratory chain

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JO - Biological Chemistry

JF - Biological Chemistry

IS - 9

ER -

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

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Keywords

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