part of part of has primary input adenosine G protein-coupled adenosine receptor activity A2A adenosine receptor activity, G protein coupled Combining with adenosine and transmitting the signal across the membrane by activating an associated G-protein; promotes the exchange of GDP for GTP on the alpha subunit of a heterotrimeric G-protein complex. G-protein-coupled A3 adenosine receptor activity A2A adenosine receptor activity, G-protein coupled P1 receptor adenosine nucleotide receptor adenosine receptor activity, G-protein coupled G protein coupled A2A adenosine receptor activity A1 adenosine receptor activity, G-protein coupled G protein coupled adenosine receptor activity A2B adenosine receptor activity, G protein coupled G protein coupled A2B adenosine receptor activity G protein coupled A3 adenosine receptor activity A3 adenosine receptor activity, G protein coupled A3 adenosine receptor activity, G-protein coupled A2B adenosine receptor activity, G-protein coupled G-protein-coupled A1 adenosine receptor activity G-protein-coupled A2B adenosine receptor activity A1 adenosine receptor activity, G protein coupled GO:0001609 GO:0001613 GO:0001612 GO:0001611 GO:0001610 adenosine receptor activity, G protein coupled G-protein-coupled A2A adenosine receptor activity G-protein coupled adenosine receptor activity G protein coupled A1 adenosine receptor activity GO:0008501 G protein-coupled adenosine receptor signaling pathway G protein-coupled receptor activity