The glycoprotein nature of A1 adenosine receptors |
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| Authors: | K N Klotz M J Lohse |
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| Affiliation: | 1. Institute of Pharmaceutical Sciences, King’s College London, London, United Kingdom;2. Kyowa Kirin Co., Ltd., Otemachi. Chiyoda-ku, Tokyo, Japan;3. SNLD Ltd., Akashi-sho, Chuo-ku, Tokyo, Japan |
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| Abstract: | A1 adenosine receptors from different tissues and species were photoaffinity labelled and then the carbohydrate content was examined by both enzymatic and chemical treatment. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis of the labelled membrane receptors shows that neuraminidase treatment alters the electrophoretic mobility of the receptor band indicating the presence of terminal neuraminic acids. Neuraminidase digestion does not influence the binding characteristics of the receptor. The totally deglycosylated receptor protein obtained by chemical treatment has an apparent molecular weight of 32,000. |
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