• Title/Summary/Keyword: Imido Proton

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Paramagnetic Inversion of the Sign of the Interference Contribution to the Transverse Relaxation of the Imido Protons of the Coordinated Imidazoles in the Uniformly $^{15}N$ Labeled Cytochrome $c_3$

  • Andre Kim;Jeong, In Cheol;Sim, Yun Bo;Gang, Sin Won;Park, Jang Su
    • Bulletin of the Korean Chemical Society
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    • v.22 no.11
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    • pp.1197-1201
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    • 2001

  • In the spectrum of uniformly 15N labeled cytochrome c3, the relative linewidths of the doublet peaks of the 15N-coupled imido proton of the coordinated imidazole group were reversed on oxidation. This inversion was explained by the interference relaxation process between the electron-proton dipolar and 15N-1H dipolear interactions. The inversion can be used to assign the imido protons of the coordinated imidazole groups in heme proteins.

  • https://doi.org/10.5012/bkcs.2001.22.11.1197 인용 PDF