Evidence map›Paper›PMID 23961916›Full record

ArticleJournal of medicinal chemistry2013

How to deal with low-resolution target structures: using SAR, ensemble docking, hydropathic analysis, and 3D-QSAR to definitively map the αβ-tubulin colchicine site.

Chenxiao Da, Susan L Mooberry, John T Gupton, Glen E Kellogg

Abstract read
In one paragraph

Article in Journal of medicinal chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

9 citing papers in PubMed, 38 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

4 authors at 3 institutions in 1 country.

Chenxiao DaDepartment of Medicinal Chemistry & Institute for Structural Biology and Drug Discovery, Virginia Commonwealth University , Richmond, Virginia 23298-0540, United States.
Susan L Mooberry
John T Gupton
Glen E Kellogg
Virginia Commonwealth University · USThe University of Texas Health Science Center at San Antonio · USUniversity of Richmond · US

Funding

The Synthesis and Biological Evaluation of Pyrrole Containing Marine Natural ProdR15CA067236 · NCI · UNIVERSITY OF RICHMOND · PI GUPTON, JOHN T. · 1996 to 2012
$882k
Development of Vascular Disrupting AgentsR01CA135043 · NCI · VIRGINIA COMMONWEALTH UNIVERSITY · PI GEWIRTZ, DAVID A. · 2009 to 2010
$544k
NCI NIH HHS R01 CA135043NCI NIH HHS R15 CA067236
6 · The paper itself

Abstract

αβ-Tubulin colchicine site inhibitors (CSIs) from four scaffolds that we previously tested for antiproliferative activity were modeled to better understand their effect on microtubules. Docking models, constructed by exploiting the SAR of a pyrrole subset and HINT scoring, guided ensemble docking of all 59 compounds. This conformation set and two variants having progressively less structure knowledge were subjected to CoMFA, CoMFA+HINT, and CoMSIA 3D-QSAR analyses. The CoMFA+HINT model (docked alignment) showed the best statistics: leave-one-out q(2) of 0.616, r(2) of 0.949, and r(2)pred (internal test set) of 0.755. An external (tested in other laboratories) collection of 24 CSIs from eight scaffolds were evaluated with the 3D-QSAR models, which correctly ranked their activity trends in 7/8 scaffolds for CoMFA+HINT (8/8 for CoMFA). The combination of SAR, ensemble docking, hydropathic analysis, and 3D-QSAR provides an atomic-scale colchicine site model more consistent with a target structure resolution much higher than the ~3.6 Å available for αβ-tubulin.

Indexed as

Hydrophobic and Hydrophilic InteractionsMolecular Docking SimulationQuantitative Structure-Activity RelationshipBinding SitesCell Line, TumorColchicineHumansProtein ConformationTubulinColchicineTubulin

Identifiers

PMID23961916
PMCPMC3831284
OpenAlexW2087836913

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.