Spectral, kinetic, and thermodynamic properties of Cu(I) and Cu(II) binding by methanobactin from Methylosinus trichosporium OB3b.

  title={Spectral, kinetic, and thermodynamic properties of Cu(I) and Cu(II) binding by methanobactin from Methylosinus trichosporium OB3b.},
  author={Dong Whan Choi and Corbin J Zea and Young Soo Do and Jeremy D Semrau and William E. Antholine and Mark S Hargrove and Nicola L B Pohl and Eric S Boyd and Gill G. Geesey and Scott C. Hartsel and Peter H Shafe and Marcus T. McEllistrem and Clint J Kisting and Damon E. Campbell and Vinay B Rao and Arlene M de la Mora and Alan A DiSpirito},
  volume={45 5},
To examine the potential role of methanobactin (mb) as the extracellular component of a copper acquisition system in Methylosinus trichosporium OB3b, the metal binding properties of mb were examined. Spectral (UV-visible, fluorescence, and circular dichroism), kinetic, and thermodynamic data suggested copper coordination changes at different Cu(II):mb ratios. Mb appeared to initially bind Cu(II) as a homodimer with a comparatively high copper affinity at Cu(II):mb ratios below 0.2, with a… CONTINUE READING


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