Evidence map›Paper›PMID 21421560›Full record

ArticleNucleic acids research2011

A type IV modification-dependent restriction enzyme SauUSI from Staphylococcus aureus subsp. aureus USA300.

Shuang-Yong Xu, Anna R Corvaglia, Siu-Hong Chan, Yu Zheng, Patrick Linder

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed
6.4field-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

60 citing papers in PubMed, 105 citations in OpenAlex.

  1. Article
  2. Article
  3. Genetic engineering ofMicrobial genomics · 2026
    Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Review
  9. Integrated genomic and proteomic analysis of the mouse-adaptedCurrent research in microbial sciences · 2025
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Characterization of theFrontiers in microbiology · 2023
    Article
  16. Review
  17. Review
  18. Article
  19. Article
  20. Review
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

5 authors at 2 institutions in 2 countries.

Shuang-Yong XuNew England Biolabs, Inc. 240 County Road, Ipswich, MA 01938, USA. xus@neb.com
Anna R Corvaglia
Siu-Hong Chan
Yu Zheng
Patrick Linder
University of Geneva · CHNew England Biolabs (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A gene encoding a putative DNA helicase from Staphylococcus aureus USA300 was cloned and expressed in Escherichia coli. The protein was purified to over 90% purity by chromatography. The purified enzyme, SauUSI, predominantly cleaves modified DNA containing 5mC and 5-hydroxymethylcytosine. Cleavage of 5mC-modified plasmids indicated that the sites S5mCNGS (S = C or G) are preferentially digested. The endonuclease activity requires the presence of adenosine triphosphate (ATP) or dATP whereas the non-hydrolyzable γ-S-ATP does not support activity. SauUSI activity was inhibited by ethylenediaminetetraacetic acid. It is most active in Mg(++) buffers. No companion methylase gene was found near the SauUSI restriction gene. The absence of a cognate methylase and cleavage of modified DNA indicate that SauUSI belongs to type IV restriction endonucleases, a group that includes EcoK McrBC and Mrr. SauUSI belongs to a family of highly similar homologs found in other sequenced S. aureus, S. epidermidis and S. carnosus genomes. More distant SauUSI orthologs can be found in over 150 sequenced bacterial/archaea genomes. Finally, we demonstrated the biological function of the type IV REase in restricting 5mC-modified plasmid DNA by transformation into clinical S. aureus strain SA564, and in restricting phage λ infection when the endonuclease is expressed in E. coli.

Indexed as

Adenosine TriphosphateColiphagesDeoxyadenine NucleotidesDNA Restriction EnzymesEscherichia coliMetalsMutagenesis, Site-DirectedPolymerase Chain ReactionProtein Structure, TertiarySodium ChlorideStaphylococcus aureusSubstrate Specificity2'-deoxyadenosine triphosphateAdenosine TriphosphateDeoxyadenine NucleotidesDNA Restriction EnzymesMetalsSodium Chloride

Identifiers

PMID21421560
PMCPMC3141236
OpenAlexW2126521696

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.