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Cryo-Electron Microscopy structure of OmcZ nanowires from Geobacter sulfurreducens


ABSTRACT:

SUBMITTER: Yangqi Gu 

PROVIDER: EMPIAR-11439 | biostudies-other |

REPOSITORIES: biostudies-other

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Structure of Geobacter cytochrome OmcZ identifies mechanism of nanowire assembly and conductivity.

Gu Yangqi Y   Guberman-Pfeffer Matthew J MJ   Srikanth Vishok V   Shen Cong C   Giska Fabian F   Gupta Kallol K   Londer Yuri Y   Samatey Fadel A FA   Batista Victor S VS   Malvankar Nikhil S NS  

Nature microbiology 20230202 2


OmcZ nanowires produced by Geobacter species have high electron conductivity (>30 S cm<sup>-1</sup>). Of 111 cytochromes present in G. sulfurreducens, OmcZ is the only known nanowire-forming cytochrome essential for the formation of high-current-density biofilms that require long-distance (>10 µm) extracellular electron transport. However, the mechanisms underlying OmcZ nanowire assembly and high conductivity are unknown. Here we report a 3.5-Å-resolution cryogenic electron microscopy structure  ...[more]

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