Evidence map›Paper›PMID 26598703›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2015

Structural basis of substrate recognition by a bacterial deubiquitinase important for dynamics of phagosome ubiquitination.

Michael J Sheedlo, Jiazhang Qiu, Yunhao Tan, Lake N Paul, Zhao-Qing Luo, Chittaranjan Das

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 77 papers.

0numbers the graph read from it
0cells of the map it votes in
77citing papers in PubMed
8.4field-weighted citation impact, top 2% 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

77 citing papers in PubMed, 115 citations in OpenAlex.

  1. mLife · 2026
    Article
  2. Substrate biasing in UCHL5 proteoforms.bioRxiv : the preprint server for biology · 2026
    Article
  3. Article
  4. Review
  5. iScience · 2026
    Article
  6. Article
  7. Review
  8. Article
  9. mLife · 2025
    Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Review
  19. Article
  20. Article

17 more citing papers are in PubMed but not listed here.

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

6 authors at 1 institution in 1 country.

Michael J SheedloDepartment of Chemistry, Purdue University, West Lafayette, IN 47907;
Jiazhang QiuDepartment of Biological Sciences, Purdue University, West Lafayette, IN 47907;
Yunhao TanDepartment of Biological Sciences, Purdue University, West Lafayette, IN 47907;
Lake N PaulBindley Biosciences Center, Purdue University, West Lafayette, IN 47907.
Zhao-Qing LuoDepartment of Biological Sciences, Purdue University, West Lafayette, IN 47907; luoz@purdue.edu cdas@purdue.edu.
Chittaranjan DasDepartment of Chemistry, Purdue University, West Lafayette, IN 47907; luoz@purdue.edu cdas@purdue.edu.
Purdue University West Lafayette · US

Funding

Transgenic Mouse Core Facility Shared Resource (TMCF-SR)P30CA023168 · NCI · PURDUE UNIVERSITY WEST LAFAYETTE · PI John Tesmer · 1985 to 2026
$43.4M
Nonlinear Optical Imaging for Guiding Protein Structure DeterminationR01GM103401 · NIGMS · PURDUE UNIVERSITY · PI SIMPSON, GARTH JASON · 2012 to 2018
$1.7M
Modulation of Host Vesicle Trafficking by Legionella pneumophilaK02AI085403 · NIAID · PURDUE UNIVERSITY · PI LUO, ZHAO-QING · 2010 to 2014
$556k
Probing novel innate immune detection mechanisms using an intracellular bacterialR21AI105714 · NIAID · PURDUE UNIVERSITY · PI LUO, ZHAO-QING · 2014 to 2015
$411k
Molecular Mechanisms of Host Function Exploitation by Type IV effectors of LegionR56AI103168 · NIAID · PURDUE UNIVERSITY · PI LUO, ZHAO-QING · 2013 to 2013
$327k
NCI NIH HHS P30 CA023168NIAID NIH HHS K02 AI085403NIAID NIH HHS K02AI085403NIAID NIH HHS R21 AI105714NIAID NIH HHS R21AI105714NIAID NIH HHS R56 AI103168NIAID NIH HHS R56AI103168NIGMS NIH HHS 2R01GM103401NIGMS NIH HHS R01 GM103401
6 · The paper itself

Abstract

Manipulation of the host's ubiquitin network is emerging as an important strategy for counteracting and repurposing the posttranslational modification machineries of the host by pathogens. Ubiquitin E3 ligases encoded by infectious agents are well known, as are a variety of viral deubiquitinases (DUBs). Bacterial DUBs have been discovered, but little is known about the structure and mechanism underlying their ubiquitin recognition. In this report, we found that members of the Legionella pneumophila SidE effector family harbor a DUB module important for ubiquitin dynamics on the bacterial phagosome. Structural analysis of this domain alone and in complex with ubiquitin vinyl methyl ester (Ub-VME) reveals unique molecular contacts used in ubiquitin recognition. Instead of relying on the Ile44 patch of ubiquitin, as commonly used in eukaryotic counterparts, the SdeADub module engages Gln40 of ubiquitin. The architecture of the active-site cleft presents an open arrangement with conformational plasticity, permitting deubiquitination of three of the most abundant polyubiquitin chains, with a distinct preference for Lys63 linkages. We have shown that this preference enables efficient removal of Lys63 linkages from the phagosomal surface. Remarkably, the structure reveals by far the most parsimonious use of molecular contacts to achieve deubiquitination, with less than 1,000 Å(2) of accessible surface area buried upon complex formation with ubiquitin. This type of molecular recognition appears to enable dual specificity toward ubiquitin and the ubiquitin-like modifier NEDD8.

Indexed as

UbiquitinationAmino Acid SequenceBacterial ProteinsHEK293 CellsHumansLegionella pneumophilaMembrane ProteinsMolecular Sequence DataPhagosomesUbiquitinUbiquitin-Specific ProteasesBacterial ProteinsMembrane ProteinsSdeA protein, Legionella pneumophilaUbiquitinUbiquitin-Specific ProteasesdeubiquitinaseLegionellaphagosometype IV secretionubiquitination

Identifiers

PMID26598703
PMCPMC4679006
OpenAlexW2172667145

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.