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The Vibrio cholerae fur gene was previously cloned and sequenced. A putative Fur box was identified in the divergent promoters of irgA, a virulence factor of V. cholerae, and irgB, a transcriptional activator of irgA. In this work, V. cholerae Fur was overexpressed in Escherichia coli and purified to approximately 95% homogeneity. The purified protein bound(More)
Cholesterol 7alpha-hydroxylase (cholesterol-NADPH oxidoreductase, EC 1.14.13.17, 7alpha-hydroxylating) is known to have extremely sensitive sulfhydryl group(s). It is believed that a cysteine residue that has a sulfhydryl group plays an important role in the decrease of this enzyme activity. The amino acid sequences of cholesterol 7alpha-hydroxylase of five(More)
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