Article,

Radiation inactivation analysis of the A1 adenosine receptor of rat brain. Decrease in radiation inactivation size in the presence of guanine nucleotide

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FEBS Lett, 252 (1-2): 125-8 (July 1989)Reddington, M Klotz, K N Lohse, M J Hietel, B Research Support, Non-U.S. Gov't Netherlands FEBS letters FEBS Lett. 1989 Jul 31;252(1-2):125-8..

Abstract

Radiation inactivation analysis of the binding of the A1 adenosine receptor antagonist, 8-cyclopentyl-1,3-dipropylxanthine to rat brain membranes yielded a radiation inactivation size of 58 kDa. In the presence of GTP gamma S this was reduced to 33 kDa, in good agreement with the size of the ligand-binding subunit detected after photoaffinity labelling. The data indicate that the structural association of A1 adenosine receptors with G-protein components is altered in situ in the presence of guanine nucleotides.

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