Evidence map›Paper›PMID 27101778›Full record

ArticleNature communications2016

Structural correlates of affinity in fetal versus adult endplate nicotinic receptors.

Tapan Kumar Nayak, Srirupa Chakraborty, Wenjun Zheng, Anthony Auerbach

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.0field-weighted citation impact, top 22% 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

11 citing papers in PubMed, 26 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 1 institution in 1 country.

Tapan Kumar NayakDepartment of Physiology and Biophysics, State University of New York at Buffalo, Buffalo, New York 14214, USA.
Srirupa ChakrabortyDepartment of Physiology and Biophysics, State University of New York at Buffalo, Buffalo, New York 14214, USA.
Wenjun ZhengDepartment of Physics, State University of New York at Buffalo, Buffalo, New York 14260, USA.
Anthony AuerbachDepartment of Physiology and Biophysics, State University of New York at Buffalo, Buffalo, New York 14214, USA.
University at Buffalo, State University of New York · US

Funding

Engineering a Transmitter Binding SiteR01NS064969 · NINDS · STATE UNIVERSITY OF NEW YORK AT BUFFALO · PI AUERBACH, ANTHONY L · 2009 to 2018
$4.1M
NINDS NIH HHS NS064969NINDS NIH HHS R01 NS064969
6 · The paper itself

Abstract

Adult-type nicotinic acetylcholine receptors (AChRs) mediate signalling at mature neuromuscular junctions and fetal-type AChRs are necessary for proper synapse development. Each AChR has two neurotransmitter binding sites located at the interface of a principal and a complementary subunit. Although all agonist binding sites have the same core of five aromatic amino acids, the fetal site has ∼30-fold higher affinity for the neurotransmitter ACh. Here we use molecular dynamics simulations of adult versus fetal homology models to identify complementary-subunit residues near the core that influence affinity, and use single-channel electrophysiology to corroborate the results. Four residues in combination determine adult versus fetal affinity. Simulations suggest that at lower-affinity sites, one of these unsettles the core directly and the others (in loop E) increase backbone flexibility to unlock a key, complementary tryptophan from the core. Swapping only four amino acids is necessary and sufficient to exchange function between adult and fetal AChRs.

Indexed as

Age FactorsAmino Acid MotifsAnimalsAplysiaBinding SitesCrystallography, X-RayExcitatory Postsynaptic PotentialsGene ExpressionHEK293 CellsHumansMiceMolecular Dynamics SimulationMolecular Sequence DataProtein BindingProtein Structure, SecondaryProtein Structure, TertiaryProtein SubunitsReceptors, NicotinicRecombinant Proteins

Identifiers

PMID27101778
PMCPMC4845029
OpenAlexW2336522943

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.