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    Hum Genet. 1997 Aug;100(2):151-4.

    Assignment of human genes for beta 2 and beta 4 subunits of voltage-dependent Ca2+ channels to chromosomes 10p12 and 2q22-q23.

    Taviaux S, Williams ME, Harpold MM, Nargeot J, Lory P.

    CRBM-CNRS, BP 5051-1919, Montpellier, France.

    We have used human beta 2 and beta 4 cDNA probes to map the genes encoding two isoforms of the regulatory beta subunit of voltage-activated Ca2+ channels, viz. CACNB2 (beta 2) and CACNB4 (beta 4), to human chromosomes 10p12 and 2q22-q23, respectively, by fluorescence in situ hybridization. The gene encoding the beta 2 protein, first described as a Lambert-Eaton myasthenic syndrome (LEMS) antigen in humans, is found close to a region that undergoes chromosome rearrangements in small cell lung cancer, which occurs in association with LEMS. CACNB2 (beta 2) and CACNB4 (beta 4) genes are members of the ion-channel gene superfamily and it should now be possible to examine their loci by linkage analysis of ion-channel-related disorders. To date, no such disease-related gene has been assigned to 10p12 and 2q22-q23.

    PMID: 9254841 [PubMed - indexed for MEDLINE]

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