Solution Structure of cGMP-binding GAF domain of Phosphodiesterase 5 - Heikaus, Clemens C.; Stout, Joseph R.; Sekharan, Monica R.; Eakin, Catherine M.; Rajagopal, Ponni; Brzovic, Peter S.; Beavo, Joseph A.; Klevit, Rachel E. (Biological Magnetic Resonance Bank, 2008)