Crystallization and preliminary X-ray diffraction analysis of NADP-dependent glyceraldehyde-3-phosphate dehydrogenase of Synechococcus PCC 7942.
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.
Nakamura
Y
Y
Research Institute for Advanced Science and Technology, Osaka Prefecture University, Sakai, Osaka 599-8570, Japan. ynakam@biochem.osakafu-u.ac.jp
Tada
T
T
Wada
K
K
Kinoshita
T
T
Tamoi
M
M
Shigeoka
S
S
Nishimura
K
K
D003460:Crystallization; D018360:Crystallography, X-Ray; D000458:Cyanobacteria / Q000201:enzymology*; D005987:Glyceraldehyde-3-Phosphate Dehydrogenases / Q000737:chemistry*; D011487:Protein Conformation; D013223:Statistics as Topic
D005987:Glyceraldehyde-3-Phosphate Dehydrogenases