Bramanti E, Ferri F, Sortino C, Onor M, Raspi G, Venturini M. Characterization of denatured proteins by hydrophobic interaction chromatography: a preliminary study.
Biopolymers 2003;
69:293-300. [PMID:
12833256 DOI:
10.1002/bip.10366]
[Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
In this preliminary study hydrophobic interaction chromatography (HIC) is proposed as a good tool in order to detect conformational changes induced by chemical denaturants in two globular proteins, cytochrome C (Cyt C) and myoglobin (MYO). Alterations in protein structure were manifested chromatographically by reproducible changes in peak heights, retention time, and appearance of multiple peaks. The HIC behavior of the two model proteins denatured by guanidinium thyocyanate (GdmSCN) was investigated, keeping constant various concentrations of urea in the mobile phase in a TSK-Gel Phenyl-5PW column (TosoBiosep). Suitable elution conditions provide evidence of the simultaneous presence of two denatured forms in the case of MYO, and sequential different denatured states of Cyt C.
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