Evidence map›Paper›PMID 22408162›Full record

ArticleJournal of bacteriology2012

Two isoforms of Geobacter sulfurreducens PilA have distinct roles in pilus biogenesis, cytochrome localization, extracellular electron transfer, and biofilm formation.

Lubna V Richter, Steven J Sandler, Robert M Weis

Open access · bronzeAbstract read
In one paragraph

Article in Journal of bacteriology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
7.2field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

30 citing papers in PubMed, 91 citations in OpenAlex.

  1. Type IV pilin regulation: a transcriptional overview.Critical reviews in microbiology · 2026
    Review
  2. Article
  3. Article
  4. The varied roles ofFrontiers in microbiology · 2023
    Article
  5. Article
  6. Article
  7. Genetic analysis of electroactive biofilms.International microbiology : the official journal of the Spanish Society for Microbiology · 2021
    Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Biology and biotechnology of microbial pilus nanowires.Journal of industrial microbiology & biotechnology · 2020
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Frontiers in microbiology · 2019
    Review
  18. Harnessing the power of microbial nanowires.Microbial biotechnology · 2018
    Review
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Lubna V RichterDepartment of Chemistry, University of Massachusetts at Amherst, Amherst, Massachusetts, USA.
Steven J Sandler
Robert M Weis
University of Massachusetts Amherst · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Type IV pili of Geobacter sulfurreducens are composed of PilA monomers and are essential for long-range extracellular electron transfer to insoluble Fe(III) oxides and graphite anodes. A previous analysis of pilA expression indicated that transcription was initiated at two positions, with two predicted ribosome-binding sites and translation start codons, potentially producing two PilA preprotein isoforms. The present study supports the existence of two functional translation start codons for pilA and identifies two isoforms (short and long) of the PilA preprotein. The short PilA isoform is found predominantly in an intracellular fraction. It seems to stabilize the long isoform and to influence the secretion of several outer-surface c-type cytochromes. The long PilA isoform is required for secretion of PilA to the outer cell surface, a process that requires coexpression of pilA with nine downstream genes. The long isoform was determined to be essential for biofilm formation on certain surfaces, for optimum current production in microbial fuel cells, and for growth on insoluble Fe(III) oxides.

Indexed as

Amino Acid SequenceBacterial AdhesionBase SequenceBiofilmsCytochromesElectron TransportFimbriae, BacterialFimbriae ProteinsGene Expression Regulation, BacterialGeobacterMolecular Sequence DataProtein IsoformsProtein TransportReverse Transcriptase Polymerase Chain ReactionSurface PropertiesCytochromesFimbriae ProteinsProtein Isoforms

Identifiers

PMID22408162
PMCPMC3347174
OpenAlexW2109428457

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.