SURFACE PROPERTIES OF SOME LOW MOLECULAR WEIGHT PROTEINS
作者:
U. C. Halder,
S. Saha,
N. K. Sinha,
K. P. Das,
期刊:
Journal of Dispersion Science and Technology
(Taylor Available online 1994)
卷期:
Volume 15,
issue 6
页码: 671-685
ISSN:0193-2691
年代: 1994
DOI:10.1080/01932699408943583
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Surface properties of four proteins having molecular weights less than 5,000 are reported at air/water and alumina/water interface at pH 7.0. Reversibility in the adsorption of these proteins at the alumina/water interface is tested. The adsorption on alumina/water interface has been found to be controlled by electrostatic interaction. Positive adsorption was obtained when protein and alumina surface had opposite charges and negative adsorption was obtained when both protein and surface had same charges. Of the four proteins reversibility in adsorption was observed with the one having the lowest molecular weight of 3100. The adsorption behavior apparently had no correlation with their surface hydrophobic!ty. Time dependent changes in air/water interfacial tension was observed for all the four proteins indicating time dependent loosening of compact protein structure and surface unfolding.
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