Evidence map›Paper›PMID 21138844›Full record

ArticleThe Journal of biological chemistry2011

Structure and dynamics of the first archaeal parvulin reveal a new functionally important loop in parvulin-type prolyl isomerases.

Łukasz Jaremko, Mariusz Jaremko, Imadeldin Elfaki, Jonathan W Mueller, Andrzej Ejchart, Peter Bayer, Igor Zhukov

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
0.9field-weighted citation impact, top 26% 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

18 citing papers in PubMed, 29 citations in OpenAlex.

  1. Pitfalls in measurements of RJournal of biomolecular NMR · 2025
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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 3 countries.

Łukasz JaremkoInstitute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, 02-106 Warsaw, Poland.
Mariusz Jaremko
Imadeldin Elfaki
Jonathan W Mueller
Andrzej Ejchart
Peter Bayer
Igor Zhukov
Institute of Biochemistry and Biophysics, Polish Academy of Sciences · PLUniversity of Duisburg-Essen · DENational Institute of Chemistry · SI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Parvulins are a group of peptidyl-prolyl isomerases (PPIases) responsible for important biological processes in all kingdoms of life. The PinA protein from the psychrophilic archaeon Cenarchaeum symbiosum is a parvulin-like PPIase. Due to its striking similarity to the human parvulins Pin1 and Par14, PinA constitutes an interesting subject for structural and functional studies. Here, we present the first high resolution NMR structure of an archaeal parvulin, PinA, based on 1798 conformational restraints. Structure calculation yields an ensemble of 20 convergent low energy structures with a backbone r.m.s.d. value of 0.6 Å within the secondary structure elements. The overall fold of PinA comprises the β-α(3)-β-α-β(2) fold typical for all parvulin structures known so far, but with helix III being a short 3(10)-helix. A detailed comparison of this high resolution structure of the first archaeal PinA protein with bacterial and eukaryotic parvulin PPIase structures reveals an atypically large catalytic binding site. This feature provides an explanation for cold-adapted protein function. Moreover, the residues in and around 3(10)-helix III exhibit strong intramolecular dynamics on a microsecond to millisecond timescale and display structural heterogeneity within the NMR ensemble. A putative peptide ligand was found for PinA by phage display and was used for (1)H-(15)N-HSQC titrations. Again, the flexible region around 3(10)-helix III as well as residues of the peptide binding pocket showed the strongest chemical shift perturbations upon peptide binding. The local flexibility of this region also was modulated by ligand binding. A glycine and two positively charged residues are conserved in most parvulin proteins in this flexible loop region, which may be of general functional importance for parvulin-type PPIases.

Indexed as

Protein FoldingArchaeal ProteinsCrenarchaeotaHumansNIMA-Interacting Peptidylprolyl IsomeraseNuclear Magnetic Resonance, BiomolecularPeptidylprolyl IsomeraseProtein Structure, SecondaryStructural Homology, ProteinArchaeal ProteinsNIMA-Interacting Peptidylprolyl IsomerasePeptidylprolyl IsomerasePIN1 protein, humanPIN4 protein, human

Identifiers

PMID21138844
PMCPMC3057832
OpenAlexW2067049305

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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.