Toshiaki Koshigoe

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The DNA-bound orientations of Cu(II) x Xaa-Gly-L-His metallopeptides (where Xaa is Gly, L-Lys or L-Arg) were investigated by DNA fiber EPR spectroscopy and molecular modeling. Observed and calculated EPR spectra indicated that the g// axes of 1:1 Cu(II) complexes of the tripeptides tilted about 50 degrees from the DNA fiber axis. These results suggest that(More)
The interactions of Cu(II)-Arg-Gly-His-Xaa metallopeptides with DNA (where Xaa is L-Leu or L-Glu) were investigated by DNA-fiber EPR spectroscopy, ESI-MS spectrometry, and agarose gel electrophoresis. The average angle between the g// axis of Cu(II)-Arg-Gly-His-Leu and the DNA-fiber axis increased from 45 degrees at room temperature to 90 degrees at -150(More)
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