Evidence map›Paper›PMID 17652323›Full record

ArticleNucleic acids research2007

Changes in the conformation of 5S rRNA cause alterations in principal functions of the ribosomal nanomachine.

Ekaterini C Kouvela, George V Gerbanas, Maria A Xaplanteri, Alexandros D Petropoulos, George P Dinos, Dimitrios L Kalpaxis

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
0.7field-weighted citation impact, top 31% 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

12 citing papers in PubMed, 21 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

6 authors at 1 institution in 1 country.

Ekaterini C KouvelaLaboratory of Biochemistry, School of Medicine, University of Patras, GR-26500 Patras, Greece.
George V Gerbanas
Maria A Xaplanteri
Alexandros D Petropoulos
George P Dinos
Dimitrios L Kalpaxis
University of Patras · GR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

5S rRNA is an integral component of the large ribosomal subunit in virtually all living organisms. Polyamine binding to 5S rRNA was investigated by cross-linking of N1-azidobenzamidino (ABA)-spermine to naked 5S rRNA or 50S ribosomal subunits and whole ribosomes from Escherichia coli cells. ABA-spermine cross-linking sites were kinetically measured and their positions in 5S rRNA were localized by primer extension analysis. Helices III and V, and loops A, C, D and E in naked 5S rRNA were found to be preferred polyamine binding sites. When 50S ribosomal subunits or poly(U)-programmed 70S ribosomes bearing tRNA(Phe) at the E-site and AcPhe-tRNA at the P-site were targeted, the susceptibility of 5S rRNA to ABA-spermine was greatly reduced. Regardless of 5S rRNA assembly status, binding of spermine induced significant changes in the 5S rRNA conformation; loop A adopted an apparent 'loosening' of its structure, while loops C, D, E and helices III and V achieved a more compact folding. Poly(U)-programmed 70S ribosomes possessing 5S rRNA cross-linked with spermine were more efficient than control ribosomes in tRNA binding, peptidyl transferase activity and translocation. Our results support the notion that 5S rRNA serves as a signal transducer between regions of 23S rRNA responsible for principal ribosomal functions.

Indexed as

AzidesBase SequenceEscherichia coliKineticsModels, MolecularMolecular Sequence DataNucleic Acid ConformationPeptidyl TransferasesPhotoaffinity LabelsPoly URibosomesRNA, BacterialRNA, Ribosomal, 5SRNA, Transfer, Amino AcylSpermineAzidesN(1)-(azidobenzamidino)sperminePeptidyl TransferasesPhotoaffinity LabelsPoly URNA, BacterialRNA, Ribosomal, 5SRNA, Transfer, Amino AcylSperminetRNA, N-acetylphenylalanine-

Identifiers

PMID17652323
PMCPMC1976436
OpenAlexW2113282301

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.