Evidence map›Paper›PMID 26452092›Full record

ArticleeLife2015

Two-subunit DNA escort mechanism and inactive subunit bypass in an ultra-fast ring ATPase.

Ninning Liu, Gheorghe Chistol, Carlos Bustamante

Open access · goldAbstract read
In one paragraph

Article in eLife, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

11 citing papers in PubMed, 19 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. How Did the Archaellum Get Its Rotation?Frontiers in microbiology · 2021
    Review
  6. Milestones inMicrobial cell (Graz, Austria) · 2020
    Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. 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 2 institutions in 1 country.

Ninning LiuJason L. Choy Laboratory of Single Molecule Biophysics, University of California, Berkeley, United States.
Gheorghe ChistolJason L. Choy Laboratory of Single Molecule Biophysics, University of California, Berkeley, United States.
Carlos BustamanteJason L. Choy Laboratory of Single Molecule Biophysics, University of California, Berkeley, United States.
University of California, Berkeley · USLawrence Berkeley National Laboratory · US

Funding

THE PHYSICAL CHEMISTRY OF NUCLEIC ACIDSR01GM032543 · NIGMS · UNIVERSITY OF OREGON · PI CARLOS Jose BUSTAMANTE · 1985 to 2026
$6.4M
Mechanisms of Viral DNA PackagingR01GM071552 · NIGMS · UNIVERSITY OF CALIFORNIA BERKELEY · PI BUSTAMANTE, CARLOS JOSE · 2004 to 2015
$4.7M
Howard Hughes Medical InstituteNIGMS NIH HHS R01 GM032543NIGMS NIH HHS R01GM032543NIGMS NIH HHS R01 GM071552NIGMS NIH HHS R01GM071552
6 · The paper itself

Abstract

SpoIIIE is a homo-hexameric dsDNA translocase responsible for completing chromosome segregation in Bacillus subtilis. Here, we use a single-molecule approach to monitor SpoIIIE translocation when challenged with neutral-backbone DNA and non-hydrolyzable ATP analogs. We show that SpoIIIE makes multiple essential contacts with phosphates on the 5'→3' strand in the direction of translocation. Using DNA constructs with two neutral-backbone segments separated by a single charged base pair, we deduce that SpoIIIE's step size is 2 bp. Finally, experiments with non-hydrolyzable ATP analogs suggest that SpoIIIE can operate with non-consecutive inactive subunits. We propose a two-subunit escort translocation mechanism that is strict enough to enable SpoIIIE to track one DNA strand, yet sufficiently compliant to permit the motor to bypass inactive subunits without arrest. We speculate that such a flexible mechanism arose for motors that, like SpoIIIE, constitute functional bottlenecks where the inactivation of even a single motor can be lethal for the cell.

Indexed as

Adenosine TriphosphatasesBacillus subtilisBacterial ProteinsDNA, BacterialModels, BiologicalProtein BindingAdenosine TriphosphatasesBacterial ProteinsDNA, Bacterialspore-specific proteins, BacillusbiophysicsB. subtilisintersubunit coordinationneutral DNARing Atpasesingle-moleculeSpoIIIE/FtsKstep sizestructural biology

Identifiers

PMID26452092
PMCPMC4728128
OpenAlexW2201750299

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.