The DOI matches its Crossref record; 51 of the 51 references it cites were found in a registry or an index.
Structure of Microbial Nanowires Reveals Stacked Hemes that Transport Electrons over Micrometers
Open accessAbstract
Summary Long-range (>10 μm) transport of electrons along networks of Geobacter sulfurreducens protein filaments, known as microbial nanowires, has been invoked to explain a wide range of globally important redox phenomena. These nanowires were previously thought to be type IV pili composed of PilA protein. Here we report a 3.7 Å resolution cryo-electron microscopy structure which surprisingly reveals that, rather than PilA, G. sulfurreducens nanowires are assembled by micrometer-long polymerization of the hexaheme cytochrome OmcS, with hemes packed within ~3.5–6 Å of each other. The inter-subunit interfaces show unique structural elements such as inter-subunit parallel-stacked hemes and axial coordination of heme by histidines from neighbouring subunits. Wild-type OmcS filaments show 100-fold greater conductivity than other filaments from an ΔomcS strain, highlighting the importance of OmcS to conductivity in these nanowires. This structure explains the remarkable capacity of soil bacteria to transport electrons to remote electron acceptors for respiration and energy sharing.
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Metadata
- Authors
- Wang, F., Gu, Y., O’Brien, J. P., Yi, S. M., Yalcin, S. E., Srikanth, V., Shen, C., Vu, D., Ing, N. L., Hochbaum, A. I., Egelman, E. H., & Malvankar, N. S.
- Venue
- Cell
- Publisher
- Elsevier BV
- Published
- 2019-04
- Volume
- 177
- Issue
- 2
- Pages
- 361-369.e10
- ISSN
- 0092-8674 (ISSN-L)
- OpenAlex
- W2929827553
- Cited by
- 567
- References
- 51
- FWCI
- 28.61
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Wang, F., Gu, Y., O’Brien, J. P., Yi, S. M., Yalcin, S. E., Srikanth, V., Shen, C., Vu, D., Ing, N. L., Hochbaum, A. I., Egelman, E. H., & Malvankar, N. S. (2019). Structure of Microbial Nanowires Reveals Stacked Hemes that Transport Electrons over Micrometers. Cell. https://doi.org/10.1016/j.cell.2019.03.029
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