Evidence map›Paper›PMID 16581910›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2006

Severe acute respiratory syndrome coronavirus papain-like protease: structure of a viral deubiquitinating enzyme.

Kiira Ratia, Kumar Singh Saikatendu, Bernard D Santarsiero, Naina Barretto, Susan C Baker, Raymond C Stevens, Andrew D Mesecar

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 268 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
268citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

268 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. COVID-19 prophylaxis with doxycycline and zinc in health care workers: a prospective, randomized, double-blind clinical trial.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2022
    Trial
  3. Article
  4. Structural analysis of the flexibility of the Ubl2 domain within the papain-like protease of SARS-CoV-2.Acta crystallographica. Section F, Structural biology communications · 2026
    Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Human Structural Homologues of SARS-CoV-2 PLmicroPublication biology · 2025
    Article
  14. Article
  15. Flavonoids Derived from the Roots ofPlants (Basel, Switzerland) · 2024
    Article
  16. Review
  17. Article
  18. Article
  19. Review
  20. Article

208 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

7 authors.

Kiira RatiaCenter for Pharmaceutical Biotechnology and Department of Medicinal Chemistry and Pharmacognosy, University of Illinois, Chicago, IL 60607, USA.
Kumar Singh Saikatendu
Bernard D Santarsiero
Naina Barretto
Susan C Baker
Raymond C Stevens
Andrew D Mesecar

Funding

Protein Expression and PurificationP01AI060915 · NIAID · UNIVERSITY OF ILLINOIS AT CHICAGO · PI JOHNSON, MICHAEL E. · 2005 to 2009
$7.7M
NCI NIH HHS Y1-CO-1020NIAID NIH HHS AI266200400058CNIAID NIH HHS P01 AI060915NIGMS NIH HHS Y1-GM-1104
6 · The paper itself

Abstract

Replication of severe acute respiratory syndrome (SARS) coronavirus (SARS-CoV) requires proteolytic processing of the replicase polyprotein by two viral cysteine proteases, a chymotrypsin-like protease (3CLpro) and a papain-like protease (PLpro). These proteases are important targets for development of antiviral drugs that would inhibit viral replication and reduce mortality associated with outbreaks of SARS-CoV. In this work, we describe the 1.85-A crystal structure of the catalytic core of SARS-CoV PLpro and show that the overall architecture adopts a fold closely resembling that of known deubiquitinating enzymes. Key features, however, distinguish PLpro from characterized deubiquitinating enzymes, including an intact zinc-binding motif, an unobstructed catalytically competent active site, and the presence of an intriguing, ubiquitin-like N-terminal domain. To gain insight into the active-site recognition of the C-terminal tail of ubiquitin and the related LXGG motif, we propose a model of PLpro in complex with ubiquitin-aldehyde that reveals well defined sites within the catalytic cleft that help to account for strict substrate-recognition motifs.

Indexed as

Binding SitesCoronavirus 3C ProteasesCrystallography, X-RayCysteine EndopeptidasesModels, MolecularPapainPeptide HydrolasesProtein Structure, SecondarySevere acute respiratory syndrome-related coronavirusUbiquitinViral ProteinsCoronavirus 3C ProteasesCysteine EndopeptidasesPapainPeptide HydrolasesUbiquitinViral Proteins

Identifiers

PMID16581910
PMCPMC1458639

What OpenQuestion holds

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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.