User:Nikhil Malvankar/Geobacter pilus

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Structural basis for metallic-like conductivity in microbial nanowires.

Nikhil S. Malvankar, Madeline Vargas, Kelly Nevin, Pier-Luc Tremblay, Kenneth Evans-Lutterodt, Dmytro Nykypanchuk, Eric Martz, Mark T. Tuominen, Derek R. Lovley. mBio 6(2):e00084-15 (2015). (doi:10.1128/mBio.00084-15)


Molecular Tour

Geobacter pilus homology model

Theoretical Model: The protein structure described on this page was determined theoretically, and hence should be interpreted with caution.


Pilus Model

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Notes & References

  1. A Geobacter sulfurreducens pilin (pilA) homology model was constructed by Swiss-Model, templated on the X-ray crystallographic structure of Pseudomonas aeruginosa pilin (1oqw, chain A). This model represents residues 1-60 of the mature pilin protein (length 61 amino acids: residues 30-90 of Q74D23), sequence FTLIELLIVVAIIGILAAIAIPQFSAYRVKAYNSAASSDLRNLKTALESAFADDQTYPPES. This monomer includes six aromatic residues, F1, F24, Y27, Y32, F51 and Y57.
  2. We employed the NMR structure of Geobacter sulfurreducens pilin, 2m7g. We employed model 5 of this 18-conformer ensemble because model 5 had the best clash score and MolProbity score.
  3. The Geobacter sequence is identical to the template Pseudomonas sequence in 22 of the first 23 residues. Residues 24-50 have 26% sequence identity.
  4. Craig L, Pique ME, Tainer JA. Type IV pilus structure and bacterial pathogenicity. Nat Rev Microbiol. 2004 May;2(5):363-78. PMID:15100690 doi:

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Eric Martz

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