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The prokaryotic complex iron–sulfur molybdoenzyme family

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Rothery, Richard A., Workun, Gregory J., Weiner, Joel H.·2008·Biochimica et Biophysica Acta (BBA) - Biomembranes

Abstract

Bacterial genomes encode an extensive range of respiratory enzymes that enable respiratory metabolism with a diverse group of reducing and oxidizing substrates under both aerobic and anaerobic growth conditions. An important class of enzymes that contributes to this broad diversity is the complex iron-sulfur molybdoenzyme (CISM) family. The architecture of this class comprises the following subunits. (i) A molybdo-bis(pyranopterin guanine dinucleotide) (Mo-bisPGD) cofactor-containing catalytic subunit that also contains a cubane [Fe-S] cluster (FS0). (ii) A four-cluster protein (FCP) subunit that contains 4 cubane [Fe-S] clusters (FS1-FS4). (iii) A membrane anchor protein (MAP) subunit which anchors the catalytic and FCP subunits to the cytoplasmic membrane. In this review, we define the CISM family of enzymes on the basis of emerging structural and bioinformatic data, and show that the catalytic and FCP subunit architectures appear in a wide range of bacterial redox enzymes. We evaluate evolutionary events involving genes encoding the CISM catalytic subunit that resulted in the emergence of the complex I (NADH:ubiquinone oxidoreductase) Nqo3/NuoG subunit architecture. We also trace a series of evolutionary events leading from a primordial Cys-containing peptide to the FCP architecture. Finally, many of the CISM archetypes and related enzymes rely on the tat translocon to transport fully folded monomeric or dimeric subunits across the cytoplasmic membrane. We have used genome sequence data to establish that there is a bias against the presence of soluble periplasmic molybdoenzymes in bacteria lacking an outer membrane.

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Metadata

Authors
Rothery, R. A., Workun, G. J., & Weiner, J. H.
Venue
Biochimica et Biophysica Acta (BBA) - Biomembranes
Publisher
Elsevier BV
Published
2008-09
Volume
1778
Issue
9
Pages
1897-1929
ISSN
0005-2736 (ISSN-L)
OpenAlex
W2006615663
Cited by
225
References
10
FWCI
4.10
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: The prokaryotic complex iron–sulfur molybdoenzyme family. https://app.cochat.ai/papers/10.1016/j.bbamem.2007.09.002
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Rothery, R. A., Workun, G. J., & Weiner, J. H. (2008). The prokaryotic complex iron–sulfur molybdoenzyme family. Biochimica et Biophysica Acta (BBA) - Biomembranes. https://doi.org/10.1016/j.bbamem.2007.09.002

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