Alternative splicing generates two variants of the alpha 1 subunit of the inhibitory glycine receptor - PubMed (original) (raw)
. 1991 Feb 5;266(4):2048-53.
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- PMID: 1703526
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Alternative splicing generates two variants of the alpha 1 subunit of the inhibitory glycine receptor
M L Malosio et al. J Biol Chem. 1991.
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Abstract
The inhibitory glycine receptor (GlyR) in mammalian spinal cord displays pharmacological and molecular heterogeneity of its strychnine binding alpha subunit. Here, cDNAs were isolated which encode a variant (alpha ins 1) of the rat GlyR alpha 1 subunit that contains eight additional amino acids in its putative cytoplasmic domain. Analysis of the corresponding genomic sequence showed that alpha ins 1 transcripts result from alternative splice acceptor site selection. S1 nuclease protection experiments, Northern blot analysis, and RNA amplification by polymerase chain reaction revealed alpha 1 and alpha ins 1 mRNA in postnatal spinal cord, but not in other brain regions. Expression of synthetic alpha ins 1 RNA in Xenopus oocytes generated glycine-gated strychnine-sensitive chloride channels. These data indicate that alternative splicing contributes to GlyR alpha subunit heterogeneity in the mammalian central nervous system.
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