Evidence map›Paper›PMID 8656274›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience1996

Determinants of competitive antagonist sensitivity on neuronal nicotinic receptor beta subunits.

S C Harvey, C W Luetje

Open access · greenAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed
3.4field-weighted citation impact, top 7% 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

66 citing papers in PubMed, 162 citations in OpenAlex.

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  11. Presynaptic Neuronal Nicotinic Receptors Differentially Shape Select Inputs to Auditory Thalamus and Are Negatively Impacted by Aging.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2017
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  15. Cell-Specific Cholinergic Modulation of Excitability of Layer 5B Principal Neurons in Mouse Auditory Cortex.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2016
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  19. Pharmacologically distinct nicotinic acetylcholine receptors drive efferent-mediated excitation in calyx-bearing vestibular afferents.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2015
    Article
  20. Article

6 more citing papers are in PubMed but not listed here.

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

2 authors at 1 institution in 1 country.

S C HarveyDepartment of Molecular and Cellular Pharmacology, University of Miami School of Medicine, Florida 33101, USA.
C W Luetje
University of Miami · US

Funding

BINDING SITE STRUCTURE OF NEURONAL NICOTINIC RECEPTORSR01DA008102 · NIDA · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI LUETJE, CHARLES WARD · 1994 to 2002
$963k
NIDA NIH HHS DA08102NIDA NIH HHS R01 DA008102
6 · The paper itself

Abstract

We constructed a series of chimeric and mutant neuronal nicotinic acetylcholine receptor beta subunits to map amino acid residues that determine sensitivity to competitive antagonists. The beta 2 and beta 4 subunits form pharmacologically distinct receptors when expressed in combination with the alpha 3 subunit in Xenopus oocytes. At equipotent acetylcholine concentrations, alpha 3 beta 2 is 56-fold more sensitive to blockage by dihydro-beta-erythroidine than is alpha 3 beta 4. The alpha 3 beta 2 combination is also sensitive to long-term blockade by neuronal bungarotoxin, whereas alpha 3 beta 4 is not. Pharmacological analysis of receptors formed by chimeric beta subunits reveals that amino acid residues that determine both dihydro-beta-erythroidine and neuronal bungarotoxin sensitivity are located within several sequence segments. The major determinant of sensitivity to both competitive antagonists is located between residues 54 and 63. A minor determinant of sensitivity to both antagonists lies between residues 1 and 54, whereas a minor determinant of NBT sensitivity lies between residues 74 and 80. Within region 54-63 of beta 2, mutant beta 2 subunits were used to identify threonine 59 as a residue critical in determining competitive antagonist sensitivity. Changing threonine 59 to lysine, as occurs in beta 4, causes a 9-fold decrease in dihydro-beta-erythroidine sensitivity and a 71-fold decrease in neuronal bungarotoxin sensitivity. Changing polar threonine 59 to negatively charged aspartate causes a 2.5-fold increase in neuronal bungarotoxin sensitivity and has no effect on dihydro-beta-erythroidine sensitivity.

Indexed as

AnimalsBinding, CompetitiveBungarotoxinsDihydro-beta-ErythroidineDose-Response Relationship, DrugElectrophysiologyFemaleMutagenesis, Site-DirectedNicotinic AntagonistsOocytesReceptors, NicotinicRecombinant Fusion ProteinsSensitivity and SpecificityThreonineXenopus laevisBungarotoxinsDihydro-beta-ErythroidineNicotinic AntagonistsReceptors, NicotinicRecombinant Fusion ProteinsThreonine

Identifiers

PMID8656274
PMCPMC6578601
OpenAlexW1629345179

What OpenQuestion holds

Textmetadata
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.