Evidence map›Paper›PMID 21539790›Full record

ArticleBiophysical journal2011

Electronic structure of neighboring extein residue modulates intein C-terminal cleavage activity.

Philip T Shemella, Natalya I Topilina, Ikko Soga, Brian Pereira, Georges Belfort, Marlene Belfort, Saroj K Nayak

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2011. 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
1.1field-weighted citation impact, top 24% 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, 20 citations in OpenAlex.

  1. Article
  2. Gold Nanoparticles Augment N-Terminal Cleavage and Splicing Reactions inFrontiers in bioengineering and biotechnology · 2021
    Article
  3. SufB intein of Mycobacterium tuberculosis as a sensor for oxidative and nitrosative stresses.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
  4. Article
  5. Dynamics differentiate between active and inactive inteins.European journal of medicinal chemistry · 2015
    Article
  6. Review
  7. Protein splicing: how inteins escape from precursor proteins.The Journal of biological chemistry · 2014
    Review
  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

7 authors at 3 institutions in 1 country.

Philip T ShemellaDepartment of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, Troy, New York, USA.
Natalya I Topilina
Ikko Soga
Brian Pereira
Georges Belfort
Marlene Belfort
Saroj K Nayak
Rensselaer Polytechnic Institute · USWadsworth Center · USNew York State Department of Health · US

Funding

SELF-SPLICING INTEINS: FUNCTION, EVOLUTION, APPLICATIONR01GM044844 · NIGMS · WADSWORTH CENTER · PI BELFORT, MARLENE · 1990 to 2019
$8.9M
Modular and Project Based Training to Enhance Rigor and Reproducibility in Research for Diverse Biomedical CareersT32GM067545 · NIGMS · RENSSELAER POLYTECHNIC INSTITUTE · PI VASHISHTH, DEEPAK · 2004 to 2020
$3.0M
NIGMS NIH HHS GM44844NIGMS NIH HHS R01 GM044844NIGMS NIH HHS T32 GM067545
6 · The paper itself

Abstract

Protein splicing is an autocatalytic reaction where an intervening element (intein) is excised and the remaining two flanking sequences (exteins) are joined. The reaction requires specific conserved residues, and activity may be affected by both the intein and the extein sequence. Predicting how sequence will affect activity is a challenging task. Based on first-principles density functional theory and multiscale quantum mechanics/molecular mechanics, we report C-terminal cleavage reaction rates for five mutations at the first residue of the C-extein (+1), and describe molecular properties that may be used as predictors for future mutations. Independently, we report on experimental characterization of the same set of mutations at the +1 residue resulting in a wide range of C-terminal cleavage activities. With some exceptions, there is general agreement between computational rates and experimental cleavage, giving molecular insight into previous claims that the +1 extein residue affects intein catalysis. These data suggest utilization of attenuating +1 mutants for intein-mediated protein manipulations because they facilitate precursor accumulation in vivo for standard purification schemes. A more detailed analysis of the "+1 effect" will also help to predict sequence-defined effects on insertion points of the intein into proteins of interest.

Indexed as

ElectronsExteinsInteinsAmino Acid SequenceCatalytic DomainComputational BiologyCyclizationCysteineKineticsModels, MolecularMolecular Sequence DataMutant ProteinsProtonsQuantum TheoryThermodynamicsCysteineMutant ProteinsProtons

Identifiers

PMID21539790
PMCPMC3149237
OpenAlexW2077190344

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.