Probing subtle differences in the hydrogen exchange behavior of variants of the human alpha-lactalbumin molten globule using mass spectrometry.
The hydrogen-exchange behavior of the low-pH molten globule of human alpha-lactalbumin, containing all four disulfides, has been examined and compared with that of a single disulfide variant, [28-111] alpha-lactalbumin, and of a series of proline variants of [28-111] alpha-lactalbumin. The small differences in hydrogen-exchange protection exhibited by these partially folded species were compared by mixing two or more proteins and monitoring their exchange simultaneously using mass spectrometr...Expand abstract
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