Functional expression from cloned cDNAs of glutamate receptor species responsive to kainate and quisqualate

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Abstract

The complete amino acid sequences of two mouse glutamate receptor subunits (GluR1 and GluR2) have been deduced by cloning and sequencing the cDNAs. Xenopus oocytes injected with mRNA derived from the GluR1 cDNA exhibit current responses both to kainate and to quisqualate as well as to glutamate, whereas oocytes injected with mRNA derived from the GluR2 cDNA show little response. Injection of oocytes with both the mRNAs produces current responses larger than those induced by the GluR1-specific mRNA and the dose-response relations indicate a positively cooperative interaction between the two subunits. These results suggest that kainate and quisqualate can activate a common glutamate receptor subtype and that glutamate-gated ionic channels are hetero-oligomers of different subunits. © 1990.

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Sakimura, K., Bujo, H., Kushiya, E., Araki, K., Yamazaki, M., Yamazaki, M., … Mishina, M. (1990). Functional expression from cloned cDNAs of glutamate receptor species responsive to kainate and quisqualate. FEBS Letters, 272(1–2), 73–80. https://doi.org/10.1016/0014-5793(90)80452-O

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