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Preliminary X‐ray diffraction analysis of YqjH from Escherichia coli: a putative cytoplasmic ferri‐siderophore reductase

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YqjH is a cytoplasmic FAD‐containing protein from Escherichia coli; based on homology to ViuB of Vibrio cholerae, it potentially acts as a ferri‐siderophore reductase. This work describes its overexpression, purification, crystallization and structure solution at 3.0 Å resolution. YqjH shares high sequence similarity with a number of known siderophore‐interacting proteins and its structure was solved by molecular replacement using the siderophore‐interacting protein from Shewanella putrefaciens as the search model. The YqjH structure resembles those of other members of the NAD(P)H:flavin oxidoreductase superfamily.
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Keywords: FAD; NAD(P)H:flavin oxidoreductases; ViuB; YqjH; ferredoxin reductases; iron; reduction; siderophores

Document Type: Research Article

Publication date: September 1, 2008

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