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XB-ART-26045
EMBO J 1990 Mar 01;93:771-6. doi: 10.1002/j.1460-2075.1990.tb08172.x.
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Alpha subunit variants of the human glycine receptor: primary structures, functional expression and chromosomal localization of the corresponding genes.

Grenningloh G , Schmieden V , Schofield PR , Seeburg PH , Siddique T , Mohandas TK , Becker CM , Betz H .


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Two cDNAs encoding variants (alpha 1 and alpha 2) of the strychnine binding subunit of the inhibitory glycine receptor (GlyR) were isolated from a human fetal brain cDNA library. The predicted amino acid sequences exhibit approximately 99% and approximately 76% identity to the previously characterized rat 48 kd polypeptide. Heterologous expression of the human alpha 1 and alpha 2 subunits in Xenopus oocytes resulted in the formation of glycine-gated strychnine-sensitive chloride channels, indicating that both polypeptides can form functional GlyRs. Using a panel of rodent-human hybrid cell lines, the gene encoding alpha 2 was mapped to the short arm (Xp21.2-p22.1) of the human X chromosome. In contrast, the alpha 1 subunit gene is autosomally located. These data indicate molecular heterogeneity of the human GlyR at the level of alpha subunit genes.

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References [+] :
Akagi, Heterogeneity of glycine receptors and their messenger RNAs in rat brain and spinal cord. 1988, Pubmed, Xenbase