Evidence map›Paper›PMID 27229326›Full record

ArticleScientific reports2016

Protein rethreading: A novel approach to protein design.

Sayeh Agah, Sandra Poulos, Austin Yu, Iga Kucharska, Salem Faham

Abstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
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

5 citing papers in PubMed.

  1. Article
  2. Article
  3. Folds from fold: Exploring topological isoforms of a single-domain protein.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  4. Article
  5. Review
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

5 authors.

Sayeh AgahDepartment of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, Virginia, 22903, United States.
Sandra PoulosDepartment of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, Virginia, 22903, United States.
Austin YuDepartment of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, Virginia, 22903, United States.
Iga KucharskaDepartment of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, Virginia, 22903, United States.
Salem FahamDepartment of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, Virginia, 22903, United States.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Protein engineering is an important tool for the design of proteins with novel and desirable features. Templates from the protein databank (PDB) are often used as initial models that can be modified to introduce new properties. We examine whether it is possible to reconnect a protein in a manner that generates a new topology yet preserves its structural integrity. Here, we describe the rethreading of dihydrofolate reductase (DHFR) from E. coli (wtDHFR). The rethreading process involved the removal of three native loops, and the introduction of three new loops with alternate connections. The structure of the rethreaded DHFR (rDHFR-1) was determined to 1.6 Å, demonstrating the success of the rethreading process. Both wtDHFR and rDHFR-1 exhibited similar affinities towards methotrexate. However, rDHFR-1 showed no reducing activity towards dihydrofolate, and exhibited about ~6-fold lower affinity towards NADPH than wtDHFR. This work demonstrates that protein rethreading can be a powerful tool for the design of a large array of proteins with novel structures and topologies, and that by careful rearrangement of a protein sequence, the sequence to structure relationship can be expanded substantially.

Indexed as

Amino Acid SequenceBacterial ProteinsDatabases, FactualEscherichia coliModels, MolecularProtein EngineeringProtein Structure, TertiaryTetrahydrofolate DehydrogenaseBacterial ProteinsTetrahydrofolate Dehydrogenase

Identifiers

PMID27229326
PMCPMC4882587

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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.