Journal
BIORESOURCE TECHNOLOGY
Volume 255, Issue -, Pages 308-317Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.01.133
Keywords
Extracellular electron transfer; Cell-surface exposed conductive proteins; Multiheme c-type cytochromes; Electroactive bacteria; Microbial electrochemical technologies
Funding
- Fundacao para a Ciencia e a Tecnologia (FCT) Portugal [SFRH/BPD/96952/2013, SFRH/BD/88664/2012, PTDC/BBB-BQB/4178/2014, PTDC/BBB-BQB/3554/2014]
- Microbiologia Molecular, Estrutural e Celular - FEDER through COMPETE - Programa Operacional Competitividade e Internacionalizacao (POCI) [LISBOA-01-0145-FEDER-007660]
- ITQB research unit GREEN-it Bioresources for sustainability [UID/Multi/04551/2013]
- BBSRC [BB/K00929X/1, BB/P01819X/1] Funding Source: UKRI
- Fundação para a Ciência e a Tecnologia [SFRH/BD/88664/2012, PTDC/BBB-BQB/3554/2014, PTDC/BBB-BQB/4178/2014] Funding Source: FCT
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Electroactive microorganisms have attracted significant interest for the development of novel biotechnological systems of low ecological footprint. These can be used for the sustainable production of energy, bioremediation of metal-contaminated environments and production of added-value products. Currently, almost 100 microorganisms from the Bacterial and Archaeal domains are considered electroactive, given their ability to efficiently interact with electrodes in microbial electrochemical technologies. Cell-surface exposed conductive proteins are key players in the electron transfer between cells and electrodes. Interestingly, it seems that among the electroactive organisms identified so far, these cell-surface proteins fall into one of four groups. In this review, the different types of cell-surface conductive proteins found in electroactive organisms will be overviewed, focusing on their structural and functional properties.
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