Evidence map›Paper›PMID 19237570›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2009

Establishing wild-type levels of catalytic activity on natural and artificial (beta alpha)8-barrel protein scaffolds.

Jörg Claren, Christoph Malisi, Birte Höcker, Reinhard Sterner

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing 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

28 citing papers in PubMed.

  1. Article
  2. Context-dependent design of induced-fit enzymes using deep learning generates well-expressed, thermally stable and active enzymes.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Directed Evolution Methods for Enzyme Engineering.Molecules (Basel, Switzerland) · 2021
    Review
  8. Evolution, folding, and design of TIM barrels and related proteins.Current opinion in structural biology · 2021
    Review
  9. Article
  10. Article
  11. Structural and functional innovations in the real-time evolution of new (βα)Proceedings of the National Academy of Sciences of the United States of America · 2017
    Article
  12. Why reinvent the wheel? Building new proteins based on ready-made parts.Protein science : a publication of the Protein Society · 2016
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. 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

4 authors.

Jörg ClarenInstitute of Biophysics and Physical Biochemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany.
Christoph Malisi
Birte Höcker
Reinhard Sterner

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The generation of high levels of new catalytic activities on natural and artificial protein scaffolds is a major goal of enzyme engineering. Here, we used random mutagenesis and selection in vivo to establish a sugar isomerisation reaction on both a natural (beta alpha)(8)-barrel enzyme and a catalytically inert chimeric (beta alpha)(8)-barrel scaffold, which was generated by the recombination of 2 (beta alpha)(4)-half barrels. The best evolved variants show turnover numbers and substrate affinities that are similar to those of wild-type enzymes catalyzing the same reaction. The determination of the crystal structure of the most proficient variant allowed us to model the substrate sugar in the novel active site and to elucidate the mechanistic basis of the newly established activity. The results demonstrate that natural and inert artificial protein scaffolds can be converted into highly proficient enzymes in the laboratory, and provide insights into the mechanisms of enzyme evolution.

Indexed as

Aldose-Ketose IsomerasesBacterial ProteinsBiocatalysisCatalytic DomainCrystallography, X-RayEvolution, MolecularIsomerismLigandsModels, MolecularMutant Proteinsortho-AminobenzoatesProtein Structure, SecondaryRibosemonophosphatesSubstrate SpecificityThermotoga maritimaAldose-Ketose IsomerasesBacterial ProteinsLigandsMutant ProteinsN-(5'-phosphoribosyl)anthranilateortho-Aminobenzoatesphosphoribosylanthranilate isomeraseRibosemonophosphates

Identifiers

PMID19237570
PMCPMC2656144

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.