6533b852fe1ef96bd12aa41f

RESEARCH PRODUCT

Altered atypical coupling of γ-aminobutyrate type A receptor agonist and convulsant binding sites in subunit-deficient mouse lines

Hartmut LüddensEsa R. KorpiGregg E. HomanicsRobert M. MihalekSaku T. Sinkkonen

subject

Agonistmedicine.medical_specialtymedicine.drug_classProtein subunitMolecular Sequence DataConvulsantsBiologySulfur Radioisotopesmedicine.disease_causeMiceRadioligand AssayCellular and Molecular NeuroscienceInternal medicinemedicineAnimalsHomomericRNA MessengerBinding siteReceptorGABA AgonistsMolecular BiologyBrain ChemistryMice KnockoutMutationBinding SitesGABAA receptorBridged Bicyclo Compounds HeterocyclicReceptors GABA-AMolecular biologyEndocrinologynervous systemConvulsant

description

We searched for subunit correlations for GABA(A) receptor-associated atypically GABA-insensitive [35S]TBPS binding. The homomeric beta3 subunit receptors could be excluded, as GABA-insensitive [35S]TBPS binding was present in beta3-/- mice. Localization of GABA-insensitive [35S]TBPS binding correlated best with those of delta, alpha4 and alpha6 subunit mRNAs. The amounts of GABA-insensitive [35S]TBPS binding components were increased in delta-/- mice, but dramatically reduced in alpha6-/- mice, suggesting a role for alpha6 but excluding delta subunits.

https://doi.org/10.1016/s0169-328x(00)00273-4