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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Characterization of a partially unfolded high potential iron protein.

A partially unfolded state of the Fe4S4-containing high potential iron-sulfur protein from Chromatium vinosum has been detected and characterized by NMR spectroscopy following addition of a concentrated solution of guanidinium chloride to the native protein. This intermediate species (i) maintains the polymetallic center, (ii) exhibits a largely collapsed secondary structure, and (iii) undergoes fast cluster decomposition upon oxidation. This information is framed into the knowledge about this class of proteins, and the possible role of this intermediate with respect to the in vivo folding/unfolding process is discussed as well its role in the slow hydrolytic degradation characteristic of oxidized HiPIPs.[1]

References

  1. Characterization of a partially unfolded high potential iron protein. Bertini, I., Cowan, J.A., Luchinat, C., Natarajan, K., Piccioli, M. Biochemistry (1997) [Pubmed]
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