| Autor: |
Yates MD; Center for Bio/Molecular Science and Engineering, Naval Research Laboratory, Washington, DC 20375, USA. tender@nrl.navy.mil., Golden JP, Roy J, Strycharz-Glaven SM, Tsoi S, Erickson JS, El-Naggar MY, Calabrese Barton S, Tender LM |
| Jazyk: |
angličtina |
| Zdroj: |
Physical chemistry chemical physics : PCCP [Phys Chem Chem Phys] 2015 Dec 28; Vol. 17 (48), pp. 32564-70. Date of Electronic Publication: 2015 Nov 27. |
| DOI: |
10.1039/c5cp05152e |
| Abstrakt: |
Microbial biofilms grown utilizing electrodes as metabolic electron acceptors or donors are a new class of biomaterials with distinct electronic properties. Here we report that electron transport through living electrode-grown Geobacter sulfurreducens biofilms is a thermally activated process with incoherent redox conductivity. The temperature dependency of this process is consistent with electron-transfer reactions involving hemes of c-type cytochromes known to play important roles in G. sulfurreducens extracellular electron transport. While incoherent redox conductivity is ubiquitous in biological systems at molecular-length scales, it is unprecedented over distances it appears to occur through living G. sulfurreducens biofilms, which can exceed 100 microns in thickness. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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