Looking first at PNP, β-AG crystals were also produced using 0.5 units of PNP in 50 mM phosphate buffer at pH 7.2 ... or between hydrophobic domains in the fiber and the hydrogen-bonded guanine layers ...

⊥ ∥ Departments of Therapeutic Discovery, and ⊥ Oncology Research, Amgen Inc., One Amgen Center Drive, Thousand Oaks, California 91320, United States # Department of Therapeutic Discovery, Amgen Inc., ...