fc gamma 2ar appeared to trigger directly , upon binding of igg2a antibodies , the adenylate cyclase system without requiring the participation of guanine nucleotide-binding ( g/f ) regulatory protein , because the fc gamma 2ar-triggered camp synthesis , which reached maximum within 30 min , was not significantly affected by an uncoupler , mn++ or by addition of guanosine triphosphate ( gtp ) analog , 5'-guanylylimidodiphosphate ( gpp ( nh ) p ) .
C0018353
guanosine
C0018366
gpp ( nh ) p