Crystallization and preliminary X-ray characterization of the Skp1-Fbg3 complex.
[No authors listed]
摘要
F-box proteins are the substrate-recognition components of Skp1-Cullin1-F-box protein-Rbx1 (SCF) ubiquitin ligase complexes. Fbs1, an F-box protein, binds specifically to proteins modified with high-mannose oligosaccharides. Fbg3, another F-box protein, has 51% sequence identity to Fbs1. Although the residues that are necessary for binding to oligosaccharides are conserved between Fbs1 and Fbg3, Fbg3 does not bind glycoproteins. Skp1 and Fbg3 were co-expressed in Escherichia coli and their complex was purified to homogeneity and crystallized. Microseeding combined with the sandwiched hanging-drop technique improved the quality of the resulting crystals. The plate-shaped crystals belonged to space group P2(1)2(1)2(1), with unit-cell parameters a = 34.1, b = 76.6, c = 193.9 A and one molecule per asymmetric unit.
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基因功能
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原始数据
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文献解读
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