A stabilized molten globule protein

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Abstract

A predominant conformational isomer of non-native α-lactalbumin (α-LA) has been purified by thermal denaturation of the native α-LA using the technique of disulfide scrambling. This unique isomer retains a substantial content of α-helical structure. It is stabilized by two native disulfide bonds within the α-helical domain and two scrambled non-native disulfide bonds at the β-sheet domain. This denatured isomer of α-LA exhibits structural characteristics that are consistent with the well-documented molten globule state. The ability to prepare a stabilized and structurally defined molten globule provides a useful model for studying the folding and unfolding pathways of proteins. © 2000 Federation of European Biochemical Societies.

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Chang, J. Y., Bulychev, A., & Li, L. (2000). A stabilized molten globule protein. FEBS Letters, 487(2), 298–300. https://doi.org/10.1016/S0014-5793(00)02341-3

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