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Title: pH-dependence of the alpha-lactalbumin structure: a fluorescence study
Authors: Hanssens, Ignace ×
Pottel, Hans
Herreman, Willy
Van Cauwelaert, F #
Issue Date: Mar-1984
Series Title: Biochemical and Biophysical Research Communications vol:119 issue:2 pages:509-15
Abstract: The fluorescence parameters of demetallized alpha-lactalbumin in the range from pH 8 to 2 show an extreme around pH 5-4 (a minimum in quantum yield and wavelength and a maximum in polarization). This extreme is not due to a competition between Ca2+ and protons but rather to a stabilization of the conformation of the protein near the isoelectric pH by the ionic interactions between local positive and negative charges on the protein. The calcium-free protein has similar fluorescence characteristics at pH 2 and 8 but the thermal transition curve is different. The influence of 0.1 M NaCl is also considered.
ISSN: 0006-291X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Faculty of Science, Campus Kulak Kortrijk
× corresponding author
# (joint) last author

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