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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 22, Number 11
BKCSDE 22(11)
November 20, 2001 
 
Title
 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 c3
Author
 Andre Kim, In-Chul Jeong, Yoon-Bo Shim, Shin-Won Kang, Jang-Su Park
Keywords
 Desulfovibrio vulgaris Miyazaki F (DvMF), Imido proton, HMQC, 15N-Labeled cytochrome c3.
Abstract
 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.
Page
 1197 - 1201
Full Text
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