Evidence map›Paper›PMID 17449079›Full record

ArticleVirology2007

In vivo particle polymorphism results from deletion of a N-terminal peptide molecular switch in brome mosaic virus capsid protein.

Shauni L Calhoun, Jeffrey A Speir, A L N Rao

Open access · greenAbstract read
In one paragraph

Article in Virology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
3.7field-weighted citation impact, top 8% 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

10 citing papers in PubMed, 22 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. 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

3 authors at 2 institutions in 1 country.

Shauni L CalhounDepartment of Plant Pathology, University of California, Riverside, CA 92521, USA.
Jeffrey A Speir
A L N Rao
University of California, Riverside · USScripps Research Institute · US

Funding

Studies of large and small-scale virus capsid dynamicsR01GM054076 · NIGMS · SCRIPPS RESEARCH INSTITUTE, THE · PI JOHNSON, JOHN EMIL · 1995 to 2014
$6.2M
tRNA mediated assembly in an icosahedral RNA virusR01GM064465 · NIGMS · UNIVERSITY OF CALIFORNIA RIVERSIDE · PI RAO, A L · 2003 to 2006
$989k
NIGMS NIH HHS GM064465-01A2NIGMS NIH HHS GM54076NIGMS NIH HHS R01 GM054076NIGMS NIH HHS R01 GM064465
6 · The paper itself

Abstract

The interaction between brome mosaic virus (BMV) coat protein (CP) and viral RNA is a carefully orchestrated process resulting in the formation of homogeneous population of infectious virions with T=3 symmetry. Expression in vivo of either wild type or mutant BMV CP through homologous replication never results in the assembly of aberrant particles. In this study, we report that deletion of amino acid residues 41-47 from the N-proximal region of BMV CP resulted in the assembly of polymorphic virions in vivo. Purified virions from symptomatic leaves remain non-infectious and Northern blot analysis of virion RNA displayed packaging defects. Biochemical characterization of variant CP by circular dichroism and MALDI-TOF, respectively, revealed that the engineered deletion affected the protein structure and capsid dynamics. Most significantly, CP subunits dissociated from polymorphic virions are incompetent for in vitro reassembly. Based on these observations, we propose a chaperon-mediated mechanism for the assembly of variant CP in vivo and also hypothesize that (41)KAIKAIA(47) N-proximal peptide functions as a molecular switch in regulating T=3 virion symmetry.

Indexed as

Amino Acid SequenceBromovirusCapsid ProteinsMicroscopy, ElectronModels, MolecularMolecular Sequence DataMutationPhenotypePolymorphism, GeneticProtein ConformationProtein SubunitsRNA StabilityRNA, ViralSequence DeletionSequence Homology, Amino AcidSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationCapsid ProteinsProtein SubunitsRNA, Viral

Identifiers

PMID17449079
PMCPMC2681301
OpenAlexW2034362953

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.