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Crystallization and preliminary x-ray diffraction analysis of malic enzyme from pigeon liver.

Recombinant pigeon-liver malic enzyme was expressed in Escherichia coli and purified to homogeneity. Two different crystal forms were grown by the hanging-drop vapour-diffusion method. Both types of crystals belong to the tetragonal space group P4(2)22, with unit-cell dimensions a = b = 163.8, c = 174.3 A for the octahedral crystals and a = b = 124.5, c = 179.2 A for the rod-like crystals. X-ray diffraction data were collected at 100 K using a synchrotron-radiation X-ray source. The Matthews parameter suggests that there are four and two molecules per asymmetric unit for the larger and the smaller tetragonal unit cells, respectively.[1]

References

  1. Crystallization and preliminary x-ray diffraction analysis of malic enzyme from pigeon liver. Tsai, L.C., Kuo, C.C., Chou, W.Y., Chang, G.G., Yuan, H.S. Acta Crystallogr. D Biol. Crystallogr. (1999) [Pubmed]
 
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