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  • Title: Crystallization and preliminary X-ray diffraction analysis of NADP-dependent glyceraldehyde-3-phosphate dehydrogenase of Synechococcus PCC 7942.
    Author: Nakamura Y, Tada T, Wada K, Kinoshita T, Tamoi M, Shigeoka S, Nishimura K.
    Journal: Acta Crystallogr D Biol Crystallogr; 2001 Jun; 57(Pt 6):879-81. PubMed ID: 11375515.
    Abstract:
    The NADP-dependent glyceraldehyde-3-phosphate dehydrogenase (GAPDH) of Synechococcus PCC 7942 was crystallized in two different forms by the hanging-drop vapour-diffusion method using ammonium sulfate as a precipitant. Form I crystals were hexagonal, space group P6(5) or P6(1), with unit-cell parameters a = b = 91.1, c = 428.6 A, gamma = 120 degrees. Form II crystals were monoclinic, space group C2, with unit-cell parameters a = 152.3, b = 80.9, c = 213.6 A, beta = 103.1 degrees. Native data were collected from a frozen crystal of form I to a resolution of 2.8 A using synchrotron radiation at SPring-8, whereas form II crystals were easily damaged by radiation at room temperature and increased mosaicity in cryoprotectant solutions. A molecular-replacement solution of the form I crystal was obtained in space group P6(5) using the program AMoRe and the structure of the NAD-dependent GAPDH from Bacillus stearothermophilus.
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