Evidence map›Paper›PMID 24710319›Full record

ArticlePloS one2014

Flexibility of the linker between the domains of DNA methyltransferase SsoII revealed by small-angle X-ray scattering: implications for transcription regulation in SsoII restriction-modification system.

Petr V Konarev, Galina S Kachalova, Alexandra Yu Ryazanova, Elena A Kubareva, Anna S Karyagina, Hans D Bartunik, Dmitri I Svergun

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.9field-weighted citation impact, top 27% 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

6 citing papers in PubMed, 8 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

7 authors at 3 institutions in 2 countries.

Petr V KonarevEuropean Molecular Biology Laboratory, Hamburg Outstation, Hamburg, Germany.
Galina S KachalovaBach Institute of Biochemistry, Russian Academy of Sciences, Moscow, Russia.
Alexandra Yu RyazanovaBelozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia.
Elena A KubarevaBelozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia.
Anna S KaryaginaBelozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia; Gamaleya Institute of Epidemiology and Microbiology, Moscow, Russia; Institute of Agricultural Biotechnology, Russian Academy of Sciences, Moscow, Russia.
Hans D BartunikBach Institute of Biochemistry, Russian Academy of Sciences, Moscow, Russia.
Dmitri I SvergunEuropean Molecular Biology Laboratory, Hamburg Outstation, Hamburg, Germany.
Lomonosov Moscow State University · RUA N Bach Institute of Biochemistry · RUEuropean Molecular Biology Laboratory · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

(Cytosine-5)-DNA methyltransferase SsoII (M.SsoII) consists of a methyltransferase domain (residues 72-379) and an N-terminal region (residues 1-71) which regulates transcription in SsoII restriction-modification system. Small-angle X-ray scattering (SAXS) is employed here to study the low resolution structure of M.SsoII and its complex with DNA containing the methylation site. The shapes reconstructed ab initio from the SAXS data reveal two distinct protein domains of unequal size. The larger domain matches the crystallographic structure of a homologous DNA methyltransferase HhaI (M.HhaI), and the cleft in this domain is occupied by DNA in the model of the complex reconstructed from the SAXS data. This larger domain can thus be identified as the methyltransferase domain whereas the other domain represents the N-terminal region. Homology modeling of the M.SsoII structure is performed by using the model of M.HhaI for the methyltransferase domain and representing the N-terminal region either as a flexible chain of dummy residues or as a rigid structure of a homologous protein (phage 434 repressor) connected to the methyltransferase domain by a short flexible linker. Both models are compatible with the SAXS data and demonstrate high mobility of the N-terminal region. The linker flexibility might play an important role in the function of M.SsoII as a transcription factor.

Indexed as

Transcription, GeneticBacterial ProteinsDNA, BacterialDNA-Cytosine MethylasesProtein Structure, TertiaryStructure-Activity RelationshipX-Ray DiffractionBacterial ProteinsDNA, BacterialDNA-Cytosine MethylasesDNA modification methylase SsoII

Identifiers

PMID24710319
PMCPMC3978073
OpenAlexW2088074515

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Registered trials

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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.