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引用次数: 3
摘要
采用超离心法研究了巨芽孢杆菌中葡萄糖脱氢酶(β - d -葡萄糖:NAD(P) 1-氧化还原酶,EC 1.1.1.47)的自结合。所使用的缓冲液的pH和组成是这样的,由于四聚体酶的可逆部分解离,酶活性降低。结果表明,在这些条件下,该蛋白以单体/二聚体/四聚体的结合平衡存在。
An ultracentrifuge study on the self-association of glucose dehydrogenase from Bacillus megaterium.
The self-association of glucose dehydrogenase (beta-D-glucose:NAD(P) 1-oxidoreductase, EC 1.1.1.47) from Bacillus megaterium was studied by analytical ultracentrifugation. The pH and composition of the buffer used were such that, owing to a reversible partial dissociation of the tetrameric enzyme, enzyme activity was reduced. It was found that under these conditions the protein exists in a monomer/dimer/tetramer association equilibrium.