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Crystallization and preliminary X-ray diffraction studies of the guanylate kinase-like domain of PSD-95 protein from rat.

The PSD-95 (postsynaptic density-95) protein, one of the members of the MAGUK (membrane-associated guanylate kinase) family, is composed of three PDZ domains, one SH3 domain and one guanylate kinase-like ( GK) domain. The GK domain mediates the scaffolding function of PSD-95 by protein--protein interaction. Here, the GK domain was subcloned, expressed as an intein fusion protein, purified without the intein and then crystallized at room temperature by the hanging-drop vapour-diffusion method using PEG 8000 as a precipitant. The complete native data set was collected to a resolution of 2.35 A using flash-cooling. The crystals belong to the primitive tetragonal space group P4(3) (or P4(1)), with unit-cell parameters a = b = 70.03 (4), c = 37.64 (1) A.[1]

References

  1. Crystallization and preliminary X-ray diffraction studies of the guanylate kinase-like domain of PSD-95 protein from rat. Kim, J.J., Rho, S.H., Im, Y.J., Kim, E.J., Eom, S.H. Acta Crystallogr. D Biol. Crystallogr. (2001) [Pubmed]
 
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