Evidence map›Paper›PMID 27510733›Full record

ArticleAngewandte Chemie (International ed. in English)2016

A Panel of TrpB Biocatalysts Derived from Tryptophan Synthase through the Transfer of Mutations that Mimic Allosteric Activation.

Javier Murciano-Calles, David K Romney, Sabine Brinkmann-Chen, Andrew R Buller, Frances H Arnold

Abstract read
In one paragraph

Article in Angewandte Chemie (International ed. in English), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing 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

42 citing papers in PubMed.

  1. Phage-assisted continuous evolution of enzymes for noncanonical tyrosine biosynthesis.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  11. A combinatorially complete epistatic fitness landscape in an enzyme active site.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  12. Engineered Biocatalytic Synthesis of β-N-Substituted-α-Amino Acids.Angewandte Chemie (International ed. in English) · 2023
    Article
  13. Article
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  16. Review
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  18. ACS catalysis · 2021
    Article
  19. Asymmetric Alkylation of Ketones Catalyzed by Engineered TrpB.Angewandte Chemie (International ed. in English) · 2021
    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

5 authors.

Javier Murciano-CallesDivision of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA.
David K RomneyDivision of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA.
Sabine Brinkmann-ChenDivision of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA.
Andrew R BullerDivision of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA.
Frances H ArnoldDivision of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA. frances@cheme.caltech.edu.

Funding

Synthesis of Biologically Active Molecular Scaffolds via Enzyme-Catalyzed Asymmetric Carbene TransferF32GM117635 · NIGMS · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI ROMNEY, DAVID KINGSLAND · 2016 to 2017
$111k
Radical SAM enzyme engineering to produce improved thiopeptide antibioticsF32GM110851 · NIGMS · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI BULLER, ANDREW · 2015 to 2016
$109k
NIGMS NIH HHS F32 GM110851NIGMS NIH HHS F32 GM117635
6 · The paper itself

Abstract

Naturally occurring enzyme homologues often display highly divergent activity with non-natural substrates. Exploiting this diversity with enzymes engineered for new or altered function, however, is laborious because the engineering must be replicated for each homologue. A small set of mutations of the tryptophan synthase β-subunit (TrpB) from Pyrococcus furiosus, which mimics the activation afforded by binding of the α-subunit, was demonstrated to have a similar activating effect in different TrpB homologues with as little as 57 % sequence identity. Kinetic and spectroscopic analyses indicate that the mutations function through the same mechanism: mimicry of α-subunit binding. From these enzymes, we identified a new TrpB catalyst that displays a remarkably broad activity profile in the synthesis of 5-substituted tryptophans. This demonstrates that allosteric activation can be recapitulated throughout a protein family to explore natural sequence diversity for desirable biocatalytic transformations.

Indexed as

Allosteric RegulationBiocatalysisKineticsMutagenesis, Site-DirectedProtein BindingProtein EngineeringProtein SubunitsPyrococcus furiosusTryptophan SynthaseProtein SubunitsTryptophan Synthaseallosteryenzymesprotein engineeringtryptophan synthase

Identifiers

PMID27510733
PMCPMC5014574

What OpenQuestion holds

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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.