Molecular Mechanisms of Microbial Extracellular Electron Transfer: The Importance of Multiheme Cytochromes
Extracellular electron transfer is a key metabolic process of many organisms that enables them to exchange electrons with extracellular electron donors/acceptors. The discovery of organisms with these abilities and the understanding of their electron transfer processes has become a priority for the...
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| Format: | Article |
| Language: | English |
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IMR Press
2022-06-01
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| Series: | Frontiers in Bioscience-Landmark |
| Subjects: | |
| Online Access: | https://www.imrpress.com/journal/FBL/27/6/10.31083/j.fbl2706174 |
| _version_ | 1811342787385229312 |
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| author | Catarina M. Paquete Leonor Morgado Carlos A. Salgueiro Ricardo O. Louro |
| author_facet | Catarina M. Paquete Leonor Morgado Carlos A. Salgueiro Ricardo O. Louro |
| author_sort | Catarina M. Paquete |
| collection | DOAJ |
| description | Extracellular electron transfer is a key metabolic process of many organisms that enables them to exchange electrons with extracellular electron donors/acceptors. The discovery of organisms with these abilities and the understanding of their electron transfer processes has become a priority for the scientific and industrial community, given the growing interest on the use of these organisms in sustainable biotechnological processes. For example, in bioelectrochemical systems electrochemical active organisms can exchange electrons with an electrode, allowing the production of energy and added-value compounds, among other processes. In these systems, electrochemical active organisms exchange electrons with an electrode through direct or indirect mechanisms, using, in most cases, multiheme cytochromes. In numerous electroactive organisms, these proteins form a conductive pathway that allows electrons produced from cellular metabolism to be transferred across the cell surface for the reduction of an electrode, or vice-versa. Here, the mechanisms by which the most promising electroactive bacteria perform extracellular electron transfer will be reviewed, emphasizing the proteins involved in these pathways. The ability of some of the organisms to perform bidirectional electron transfer and the pathways used will also be highlighted. |
| first_indexed | 2024-04-13T19:17:08Z |
| format | Article |
| id | doaj.art-b48880635198401aae75d9b52808ec90 |
| institution | Directory Open Access Journal |
| issn | 2768-6701 |
| language | English |
| last_indexed | 2024-04-13T19:17:08Z |
| publishDate | 2022-06-01 |
| publisher | IMR Press |
| record_format | Article |
| series | Frontiers in Bioscience-Landmark |
| spelling | doaj.art-b48880635198401aae75d9b52808ec902022-12-22T02:33:38ZengIMR PressFrontiers in Bioscience-Landmark2768-67012022-06-0127617410.31083/j.fbl2706174S2768-6701(22)00533-0Molecular Mechanisms of Microbial Extracellular Electron Transfer: The Importance of Multiheme CytochromesCatarina M. Paquete0Leonor Morgado1Carlos A. Salgueiro2Ricardo O. Louro3Institute of Chemical and Biological Technology António Xavier (ITQB NOVA), NOVA University Lisbon, 2780-157 Oeiras, PortugalAssociate Laboratory i4HB – Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, PortugalAssociate Laboratory i4HB – Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, PortugalInstitute of Chemical and Biological Technology António Xavier (ITQB NOVA), NOVA University Lisbon, 2780-157 Oeiras, PortugalExtracellular electron transfer is a key metabolic process of many organisms that enables them to exchange electrons with extracellular electron donors/acceptors. The discovery of organisms with these abilities and the understanding of their electron transfer processes has become a priority for the scientific and industrial community, given the growing interest on the use of these organisms in sustainable biotechnological processes. For example, in bioelectrochemical systems electrochemical active organisms can exchange electrons with an electrode, allowing the production of energy and added-value compounds, among other processes. In these systems, electrochemical active organisms exchange electrons with an electrode through direct or indirect mechanisms, using, in most cases, multiheme cytochromes. In numerous electroactive organisms, these proteins form a conductive pathway that allows electrons produced from cellular metabolism to be transferred across the cell surface for the reduction of an electrode, or vice-versa. Here, the mechanisms by which the most promising electroactive bacteria perform extracellular electron transfer will be reviewed, emphasizing the proteins involved in these pathways. The ability of some of the organisms to perform bidirectional electron transfer and the pathways used will also be highlighted.https://www.imrpress.com/journal/FBL/27/6/10.31083/j.fbl2706174extracellular electron transferbioelectrochemical systemsbiogeochemical cycling of elementselectroactive organismsreduction potentialironmultiheme cytochromes |
| spellingShingle | Catarina M. Paquete Leonor Morgado Carlos A. Salgueiro Ricardo O. Louro Molecular Mechanisms of Microbial Extracellular Electron Transfer: The Importance of Multiheme Cytochromes Frontiers in Bioscience-Landmark extracellular electron transfer bioelectrochemical systems biogeochemical cycling of elements electroactive organisms reduction potential iron multiheme cytochromes |
| title | Molecular Mechanisms of Microbial Extracellular Electron Transfer: The Importance of Multiheme Cytochromes |
| title_full | Molecular Mechanisms of Microbial Extracellular Electron Transfer: The Importance of Multiheme Cytochromes |
| title_fullStr | Molecular Mechanisms of Microbial Extracellular Electron Transfer: The Importance of Multiheme Cytochromes |
| title_full_unstemmed | Molecular Mechanisms of Microbial Extracellular Electron Transfer: The Importance of Multiheme Cytochromes |
| title_short | Molecular Mechanisms of Microbial Extracellular Electron Transfer: The Importance of Multiheme Cytochromes |
| title_sort | molecular mechanisms of microbial extracellular electron transfer the importance of multiheme cytochromes |
| topic | extracellular electron transfer bioelectrochemical systems biogeochemical cycling of elements electroactive organisms reduction potential iron multiheme cytochromes |
| url | https://www.imrpress.com/journal/FBL/27/6/10.31083/j.fbl2706174 |
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