Evidence map›Paper›PMID 17565172›Full record

ArticleActa crystallographica. Section F, Structural biology and crystallization communications2007

Oligomerization of BenM, a LysR-type transcriptional regulator: structural basis for the aggregation of proteins in this family.

Obidimma C Ezezika, Sandra Haddad, Ellen L Neidle, Cory Momany

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In one paragraph

Article in Acta crystallographica. Section F, Structural biology and crystallization communications, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.4field-weighted citation impact, top 17% 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

17 citing papers in PubMed, 37 citations in OpenAlex.

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  16. Crystallization and preliminary X-ray analysis of CrgA, a LysR-type transcriptional regulator from pathogenic Neisseria meningitidis MC58.Acta crystallographica. Section F, Structural biology and crystallization communications · 2008
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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.

Obidimma C EzezikaDepartment of Microbiology, University of Georgia, Athens, GA 30602, USA.
Sandra Haddad
Ellen L Neidle
Cory Momany
University of Georgia · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

LysR-type transcriptional regulators comprise the largest family of homologous regulatory DNA-binding proteins in bacteria. A problematic challenge in the crystallization of LysR-type regulators stems from the insolubility and precipitation difficulties encountered with high concentrations of the full-length versions of these proteins. A general oligomerization scheme is proposed for this protein family based on the structures of the effector-binding domain of BenM in two different space groups, P4(3)22 and C222(1). These structures used the same oligomerization scheme of dimer-dimer interactions as another LysR-type regulator, CbnR, the full-length structure of which is available [Muraoka et al. (2003), J. Mol. Biol. 328, 555-566]. Evaluation of packing relationships and surface features suggests that BenM can form infinite oligomeric arrays in crystals through these dimer-dimer interactions. By extrapolation to the liquid phase, such dimer-dimer interactions may contribute to the significant difficulty in crystallizing full-length members of this family. The oligomerization of dimeric units to form biologically important tetramers appears to leave unsatisfied oligomerization sites. Under conditions that favor association, such as neutral pH and concentrations appropriate for crystallization, higher order oligomerization could cause solubility problems with purified proteins. A detailed model by which BenM and other LysR-type transcriptional regulators may form these arrays is proposed.

Indexed as

Bacterial ProteinsBiopolymersCrystallizationCrystallographyModels, MolecularProtein BindingProtein ConformationRecombinant ProteinsTranscription FactorsBacterial ProteinsBenM protein, AcinetobacterBiopolymersRecombinant ProteinsTranscription Factors

Identifiers

PMID17565172
PMCPMC2334995
OpenAlexW2028104786

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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.