Conversion of Hydrogenobacter thermophilus cytochrome c(552) into a b-type cytochrome by mutagenesis of both heme-binding cysteines to alanines significantly reduces the stability of the protein (Tomlinson, E. J., and Ferguson, S. J. (2000) Proc. Natl. Acad. Sci. U. S. A. 97, 5156-5160). To understand the effects of this change on the structure and dynamics of the protein, hetero-nuclear (15)N-edited NMR techniques have been used to characterize this b-type variant. The backbone (15)N, (1)H(N...Expand abstract
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NMR analysis shows that a b-type variant of Hydrogenobacter thermophilus cytochrome c552 retains its native structure.
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