Evidence map›Paper›PMID 20677742›Full record

ArticleThe journal of physical chemistry. B2010

Free energy perturbation simulation on transition states and high-activity mutants of human butyrylcholinesterase for (-)-cocaine hydrolysis.

Wenchao Yang, Yongmei Pan, Lei Fang, Daquan Gao, Fang Zheng, Chang-Guo Zhan

Abstract read
In one paragraph

Article in The journal of physical chemistry. B, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
3.2field-weighted citation impact, top 9% 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

14 citing papers in PubMed, 25 citations in OpenAlex.

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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

6 authors at 2 institutions in 2 countries.

Wenchao YangKey Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR China.
Yongmei Pan
Lei Fang
Daquan Gao
Fang Zheng
Chang-Guo Zhan
Central China Normal University · CNUniversity of Kentucky · US

Funding

Development of Esterases for the Treatment of Cocaine Overdose and AbuseR01DA021416 · NIDA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI WOODS, JAMES H · 2006 to 2009
$2.8M
High-activity mutants of cocaine esterase for treatment of drug addictionR01DA025100 · NIDA · UNIVERSITY OF KENTUCKY · PI LANDRY, DONALD W, WOODS, JAMES H · 2008 to 2012
$2.5M
Redesign of Butyrylcholinesterase for Cocaine MetabolismR01DA013930 · NIDA · UNIVERSITY OF KENTUCKY · PI ZHAN, CHANG-GUO · 2003 to 2010
$2.4M
NIDA NIH HHS R01 DA013930NIDA NIH HHS R01 DA021416NIDA NIH HHS R01 DA025100
6 · The paper itself

Abstract

A unified computational approach based on free energy perturbation (FEP) simulations of transition states has been employed to calculate the mutation-caused shifts of the free energy change from the free enzyme to the rate-determining transition state for (-)-cocaine hydrolysis catalyzed by the currently most promising series of mutants of human butyrylcholinesterase (BChE) that contain the A199S/A328W/Y332G mutations. The FEP simulations were followed by Michaelis-Menten kinetics analysis determining the individual k(cat) and K(M) values missing for the A199S/F227A/A328W/Y332G mutant in this series. The calculated mutation-caused shifts of the free energy change from the free enzyme to the rate-determining transition state are in good agreement with the experimental kinetic data, demonstrating that the unified computational approach based on the FEP simulations of the transition states may be valuable for future computational design of new BChE mutants with a further improved catalytic efficiency against (-)-cocaine.

Indexed as

MutationAmino Acid SubstitutionButyrylcholinesteraseCell LineCocaineHumansHydrolysisKineticsMolecular Dynamics SimulationMutant ProteinsProtein ConformationThermodynamicsButyrylcholinesteraseCocaineMutant Proteins

Identifiers

PMID20677742
PMCPMC2930763
OpenAlexW2020649868

What OpenQuestion holds

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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.