Evidence map›Paper›PMID 25620686›Full record

ArticleThe FEBS journal2015

'Dopamine-first' mechanism enables the rational engineering of the norcoclaurine synthase aldehyde activity profile.

Benjamin R Lichman, Markus C Gershater, Eleanor D Lamming, Thomas Pesnot, Altin Sula, Nicholas H Keep, Helen C Hailes, John M Ward

Open access · hybridAbstract read
In one paragraph

Article in The FEBS journal, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
5.9field-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

36 citing papers in PubMed, 76 citations in OpenAlex.

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  18. Peroxisomes: A New Hub for Metabolic Engineering in Yeast.Frontiers in bioengineering and biotechnology · 2021
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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

8 authors at 2 institutions in 1 country.

Benjamin R LichmanDepartment of Biochemical Engineering, University College London, UK.
Markus C Gershater
Eleanor D Lamming
Thomas Pesnot
Altin Sula
Nicholas H Keep
Helen C Hailes
John M Ward
University College London · GBBirkbeck, University of London · GB

Funding

Biotechnology and Biological Sciences Research Council BB/F016948/1Biotechnology and Biological Sciences Research Council BB/G014426/1Wellcome Trust
6 · The paper itself

Abstract

Norcoclaurine synthase (NCS) (EC 4.2.1.78) catalyzes the Pictet-Spengler condensation of dopamine and an aldehyde, forming a substituted (S)-tetrahydroisoquinoline, a pharmaceutically important moiety. This unique activity has led to NCS being used for both in vitro biocatalysis and in vivo recombinant metabolism. Future engineering of NCS activity to enable the synthesis of diverse tetrahydroisoquinolines is dependent on an understanding of the NCS mechanism and kinetics. We assess two proposed mechanisms for NCS activity: (a) one based on the holo X-ray crystal structure and (b) the 'dopamine-first' mechanism based on computational docking. Thalictrum flavum NCS variant activities support the dopamine-first mechanism. Suppression of the non-enzymatic background reaction reveals novel kinetic parameters for NCS, showing it to act with low catalytic efficiency. This kinetic behaviour can account for the ineffectiveness of recombinant NCS in in vivo systems, and also suggests NCS may have an in planta role as a metabolic gatekeeper. The amino acid substitution L76A, situated in the proposed aldehyde binding site, results in the alteration of the enzyme's aldehyde activity profile. This both verifies the dopamine-first mechanism and demonstrates the potential for the rational engineering of NCS activity.

Indexed as

AldehydesAlkaloidsCarbon-Nitrogen LigasesCatalysisCatalytic DomainChromatography, High Pressure LiquidCrystallography, X-RayDopamineLigandsModels, MolecularMolecular Dynamics SimulationProtein BindingProtein EngineeringProtein Structure, SecondaryRecombinant ProteinsTemperatureAldehydesAlkaloidsCarbon-Nitrogen LigasesDopamineLigandsnorcoclaurine synthaseRecombinant Proteinsalkaloid biosynthesisbiocatalysisenzyme engineeringenzyme kineticsenzyme mechanism

Identifiers

PMID25620686
PMCPMC4413047
OpenAlexW2003519984

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.