Evidence map›Paper›PMID 19122193›Full record

ArticleThe Journal of biological chemistry2009

Characterization and in vitro reaction properties of 19 unique hairpin telomeres from the linear plasmids of the lyme disease spirochete.

Yvonne Tourand, Jan Deneke, Tara J Moriarty, George Chaconas

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
1.9field-weighted citation impact, top 16% 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

29 citing papers in PubMed, 43 citations in OpenAlex.

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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

4 authors at 1 institution in 1 country.

Yvonne TourandDepartment of Biochemistry and Molecular Biology, University of Calgary, Calgary, Alberta T2N 4N1, Canada.
Jan Deneke
Tara J Moriarty
George Chaconas
University of Calgary · CA

Funding

CIHR 78190
6 · The paper itself

Abstract

The genome of the Lyme disease pathogen Borrelia burgdorferi contains about a dozen linear DNA molecules that carry covalently closed hairpin telomeres as a specialized mechanism for dealing with the end-replication problem. The hairpin telomeres are generated from replicative intermediates through a two-step transesterification promoted by the telomere resolvase ResT. Although the genome of B. burgdorferi has been sequenced, the sequence of most telomeres has remained unknown because of difficulties in recovering and completely sequencing the covalently closed hairpin ends. In this study we report a new approach for the direct sequencing Borrelia telomeres and report the sequence, characterization, and in vitro reaction properties of 19 unique telomeres. Surprisingly, a variation of greater than 160-fold in the initial reaction rates of in vitro ResT-mediated telomere resolution was observed between the most active and least active telomeres. Moreover, three of the hairpin telomeres were completely inactive in vitro, but their in vivo functionality was demonstrated. Our results provide important new information on the structure and function of the B. burgdorferi telomeres and suggest the possibility that factors besides the telomere resolvase ResT may influence the reaction in vivo and rescue those telomeres that are not functional in vitro with ResT alone.

Indexed as

Lyme DiseaseBacterial ProteinsBase SequenceBorrelia burgdorferiCell-Free SystemDNA, BacterialDNA ReplicationEndodeoxyribonucleasesGenome, BacterialMolecular Sequence DataPlasmidsTelomereBacterial ProteinsDNA, BacterialEndodeoxyribonucleasesResT protein, Borrelia

Identifiers

PMID19122193
PMCPMC2652300
OpenAlexW2092995889

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.