What question did this study set out to answer?

To establish the precise subunit stoichiometry of the recombinant alpha1 beta2 gamma2 GABAA receptor pore complex.

September 1, 1996Journal of NeuroscienceOpen Access

Stoichiometry of a Recombinant GABAAReceptor

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To establish the precise subunit stoichiometry of the recombinant alpha1 beta2 gamma2 GABAA receptor pore complex.
Introduced a conserved leucine-to-serine mutation into the putative second transmembrane domain of rat alpha1 (L263S), beta2 (L259S), and gamma2 (L274S) subunits.
Coexpressed combinations of wild-type and mutated subunits in Xenopus laevis oocytes to generate mixed receptor populations.
Analyzed the number of sensitivity components in compound GABA dose-response relationships to deduce subunit incorporation numbers.
Incorporation of the leucine-to-serine mutation incrementally increased GABA sensitivity in direct proportion to the number of mutant subunits present.
Component analysis of compound dose-response curves demonstrated that the functional receptor is a pentamer composed of two alpha1, two beta2, and one gamma2 subunits.

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Implication

Recombinant expression study reveals a 2-alpha, 2-beta, 1-gamma subunit arrangement in Xenopus laevis oocytes, resolving the stoichiometry of central inhibitory GABAA receptors.

Cite This Study

Chang et al. (1996) studied this question.

synapsesocial.com/papers/6a7d64432c1f7923a7965cba https://doi.org/10.1523/jneurosci.16-17-05415.1996

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Implication

Recombinant expression study reveals a 2-alpha, 2-beta, 1-gamma subunit arrangement in Xenopus laevis oocytes, resolving the stoichiometry of central inhibitory GABAA receptors.

Stoichiometry of a Recombinant GABAAReceptor

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Discussion

Implication

Cite This Study

Stoichiometry of a Recombinant GABAAReceptor

Key Points

Discussion

Implication

Cite This Study

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