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Purification, crystallization and preliminary X-ray crystallographic analysis of human CCG1-interacting factor B
B Padmanabhan1, T Kuzuhara, H Mizuno
1Horikoshi Gene Selector Project, Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Corporation (JST), 5-9-6 Tokodai, Tsukuba, Ibaraki 300-2635, Japan.
Abstract:
A novel human factor CIB (CCG1-interacting factor B) has been isolated using the yeast two-hybrid system. The 22 kDa CIB protein has been expressed in Escherichia coli, purified to homogeneity and crystallized in a form suitable for crystallographic studies. The protein was crystallized in the orthogonal space group P2(1)2(1)2(1), with unit-cell parameters a = 43.60 (2), b = 44.45 (1), c = 110.70 (5) A and one molecule in the asymmetric unit. The crystal diffracted beyond 2.2 A resolution using synchrotron radiation.