membrane proteins of mr 240,000 , 130,000 , and 85,000 ( gs-proteins ) were rapidly and selectively phosphorylated in particulate fractions of rabbit aortic smooth muscle in the presence of [ mg-32p ] atp and low concentrations of cgmp ( ka = 0.01 microm ) or camp ( ka = 0.2 microm ) .
C0025252
membrane proteins
C0033684
proteins