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Investigation of the self-assembly of hydrophobic self-complementary ionic tetrapeptides

Investigation of the self-assembly of hydrophobic self-complementary ionic tetrapeptides The self-aggregation of two short ionic tetrapeptides (RWDW and RVDV, where R = arginine, V = valine, W = tryptophan, D = aspartic acid) was studied by different experimental techniques such as, atomic force microscopy (AFM), light scattering (LS), isothermal titration calorimetry (ITC) and viscosimetry. AFM was used to investigate the morphology of the aggregates; the AFM images showed the presence of fibrillar aggregates whose number and length increased with increasing oligopeptides concentration. On the other hand, the collected experimental calorimetric and physical chemical results consistently indicated a critical aggregation concentration (cac) around 0.5 and 2.0 mM for RWDW and RVDV respectively. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Thermal Analysis and Calorimetry Springer Journals

Investigation of the self-assembly of hydrophobic self-complementary ionic tetrapeptides

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References (14)

Publisher
Springer Journals
Copyright
Copyright © 2009 by Akadémiai Kiadó, Budapest, Hungary
Subject
Chemistry; Measurement Science and Instrumentation; Inorganic Chemistry ; Polymer Sciences ; Analytical Chemistry ; Physical Chemistry
ISSN
1388-6150
eISSN
1572-8943
DOI
10.1007/s10973-009-0277-z
Publisher site
See Article on Publisher Site

Abstract

The self-aggregation of two short ionic tetrapeptides (RWDW and RVDV, where R = arginine, V = valine, W = tryptophan, D = aspartic acid) was studied by different experimental techniques such as, atomic force microscopy (AFM), light scattering (LS), isothermal titration calorimetry (ITC) and viscosimetry. AFM was used to investigate the morphology of the aggregates; the AFM images showed the presence of fibrillar aggregates whose number and length increased with increasing oligopeptides concentration. On the other hand, the collected experimental calorimetric and physical chemical results consistently indicated a critical aggregation concentration (cac) around 0.5 and 2.0 mM for RWDW and RVDV respectively.

Journal

Journal of Thermal Analysis and CalorimetrySpringer Journals

Published: Sep 1, 2009

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