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Measurement of interactions between protein layers adsorbed on silica by atomic force microscopy
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2004 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 16, S2383-S2392 p.Article in journal (Refereed)
Abstract [en]

The present work, using an atomic force microscope and the colloid probe technique, investigates the interaction forces between bovine serum albumin (BSA) layers and between apoferritin layers adsorbed on silica surfaces. The measurements have been carried out in an aqueous medium at different pH values and NaCl concentrations. Similar behaviours have been found with both proteins. Electrostatic and steric forces dominate the interactions between the protein layers at low NaCl concentrations. However, a very strange behaviour is found as a function of pH at high NaCl concentrations. The results obtained under these conditions could be explained if the presence of hydration forces in these systems is assumed.

Place, publisher, year, edition, pages
2004. Vol. 16, S2383-S2392 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-26955OAI: oai:DiVA.org:ri-26955DiVA: diva2:1053958
Note
A1738Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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YKI – Ytkemiska institutet
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Journal of Physics: Condensed Matter
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