Evidence map›Paper›PMID 20194796›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2010

A zinc-binding site by negative selection induces metallodrug susceptibility in an essential chaperonin.

Shujian Cun, Hongzhe Sun

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

13 citing papers in PubMed, 48 citations in OpenAlex.

  1. Article
  2. Metal Complexes as Antiviral Agents for SARS-CoV-2.Chembiochem : a European journal of chemical biology · 2021
    Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Functional disruption of peroxiredoxin by bismuth antiulcer drugs attenuates Helicobacter pylori survival.Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry · 2017
    Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Recent advances in bioinorganic chemistry of bismuth.Current opinion in chemical biology · 2012
    Review
  13. 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

2 authors at 1 institution in 1 country.

Shujian CunDepartment of Chemistry and Open Laboratory of Chemical Biology, University of Hong Kong, Pokfulam Road, Hong Kong, China.
Hongzhe Sun
Hong Kong Metropolitan University · HK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

GroES is an indispensable chaperonin virtually found throughout all life forms. Consequently, mutations of this protein must be critically scrutinized by natural selection. Nevertheless, the homolog from a potentially virulent gastric pathogen, Helicobacter pylori, strikingly features a histidine/cysteine-rich C terminus that shares no significant homology with other family members. Additionally, three more (H45, C51, and C53) are uniquely present in its apical domain. The statistical analyses show that these residues may have originated from negative selection, presumably driven by either dependent or independent amino acid mutations. In the absence of the C-terminal metal-binding domain, the mutant protein still exhibits a substantial capacity for zinc binding in vivo. The biochemical properties of site-directed mutants indicate that H45, C51, and C53 make up an oxidation-sensitive zinc-binding site that may donate the bound metal to a zinc acceptor. Of interest, bismuth antiulcer drugs strongly bind at this site (K(d) of approximately 7 x 10(-26) M), replacing the bound zinc and consequently inducing the disruption of the quaternary structure. Because biological features by negative selection are usually inert to change during evolution, this study sheds light on a promising field whereby medicines can be designed or improved to specifically target the residues that uniquely evolved in pathogenic proteins so as to retard the emergence of drug resistance.

Indexed as

Selection, GeneticAmino Acid SequenceAmino Acid SubstitutionBinding, CompetitiveBinding SitesBismuthChaperonin 10CysteineDrug ResistanceEscherichia coliHelicobacter pyloriHistidineKineticsMolecular Sequence DataMutant ProteinsOxidation-ReductionBismuthChaperonin 10CysteineHistidineMutant ProteinsZinc

Identifiers

PMID20194796
PMCPMC2841863
OpenAlexW1993648414

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.