Abstract
The chromosomal localization of four neuronal nicotinic acetylcholine receptor subunit genes was performed by following the mendelian segregation of their corresponding alleles in backcrosses involving the mouse species Mus spretus and the laboratory strains C57BL/6 or BALB/c. A similar analysis previously performed with muscle nicotinic acetylcholine receptor subunits revealed that the genes coding for the α and β subunits are respectively located on chromosome 2 and 11, whereas the γ and δ subunit coding genes are linked and located on mouse chromosome 1. In this study, we show that the genes coding for the neuronal nicotinic acetylcholine receptor α2, α3 and β2 subunits are dispersed on three different mouse chromosomes, viz. 14, 9 and 3 respectively. Moreover, the α4 subunit gene is located on chromosome 2 but is not genetically linked to the α1 subunit gene.
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