Abstract

The conformations of fibroblast and E. coli-derived recombinant human interferon-beta s were studied by circular dichroism and nuclear magnetic resonance spectroscopy in the acidic pH region of 4.6 to 1.6. Both interferons have very similar conformations with high alpha-helix contents (approximately 70%). These results suggest that glycosylation does not appreciably change the conformation of human interferon-beta. Moreover, a slow conformational change is observed below pH 2.0, which induces the disruption of beta-sheets.

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