Evidence map›Paper›PMID 32677310›Full record

ReviewChembiochem : a European journal of chemical biology2021

Tryptophan Synthase: Biocatalyst Extraordinaire.

Ella Watkins-Dulaney, Sabine Straathof, Frances Arnold

Open access · greenAbstract readReview
In one paragraph

Review in Chembiochem : a European journal of chemical biology, 2021. 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
4.4field-weighted citation impact, top 4% 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

42 citing papers in PubMed, 96 citations in OpenAlex.

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  4. Solution-state nuclear magnetic resonance studies of theBiochemistry and biophysics reports · 2026
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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

3 authors at 1 institution in 1 country.

Ella Watkins-DulaneyDivision of Biology and Biological Engineering, California Institute of Technology, MC 210-41, 1200 E. California Boulevard, Pasadena, CA 91125, USA.
Sabine StraathofDivision of Chemistry and Chemical Engineering, California Institute of Technology, MC 210-41, 1200 E. California Boulevard, Pasadena, CA 91125, USA.
Frances ArnoldDivision of Biology and Biological Engineering, California Institute of Technology, MC 210-41, 1200 E. California Boulevard, Pasadena, CA 91125, USA.ORCID 0000-0002-4027-364X
California Institute of Technology · US

Funding

Development of a Biocatalytic Platform for Convergent Synthesis of Chiral AminesR01GM125887 · NIGMS · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI ARNOLD, FRANCES H · 2018 to 2021
$1.2M
NIGMS NIH HHS R01 GM125887
6 · The paper itself

Abstract

Tryptophan synthase (TrpS) has emerged as a paragon of noncanonical amino acid (ncAA) synthesis and is an ideal biocatalyst for synthetic and biological applications. TrpS catalyzes an irreversible, C-C bond-forming reaction between indole and serine to make l-tryptophan; native TrpS complexes possess fairly broad specificity for indole analogues, but are difficult to engineer to extend substrate scope or to confer other useful properties due to allosteric constraints and their heterodimeric structure. Directed evolution freed the catalytically relevant TrpS β-subunit (TrpB) from allosteric regulation by its TrpA partner and has enabled dramatic expansion of the enzyme's substrate scope. This review examines the long and storied career of TrpS from the perspective of its application in ncAA synthesis and biocatalytic cascades.

Indexed as

Amino AcidsBiocatalysisTryptophan SynthaseAmino AcidsTryptophan Synthaseamino acidsbiocatalysisbiotransformationenzymeprotein engineering

Identifiers

PMID32677310
PMCPMC7935429
OpenAlexW3042340042

What OpenQuestion holds

Textmetadata
LicenceTDM
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.