Surface properties of spider silk particles in solution.
Surface properties of spider silk particles in solution.
复制标题
溶液中蜘蛛丝颗粒的表面性质
DOI:
10.1039/c3bm60109a
复制
发表时间:
2013
影响因子:
6.6
通讯作者:
G. Papastavrou
中科院分区:
文献类型:
--
作者:
N. Helfricht;M. Klug;A. Mark;V. Kuznetsov;C. Blüm;T. Scheibel;G. Papastavrou
Recombinant spider silk proteins, such as eADF4(C16), can be used for various applications. Colloidal particles of eADF4(C16) show potential as drug delivery systems. Tuning the colloidal properties of suspensions of eADF4(C16) particles represents a major prerequisite for their use in pharmaceutical formulations. In this study we determined the surface properties concerning inter-particle interactions by means of electrophoretic mobility and direct force measurements. The surface charge of eADF4(C16) spider silk particles was determined as a function of ionic strength and pH, respectively. The resulting electrophoretic mobility can be described using the O'Brien and White theory and is directly related to the amino acid sequence of the protein. We determined the extension of a fuzzy protein layer protruding into the solution by direct force measurements using a colloidal probe technique. This soft layer leads to deviations in the electrophoretic mobility and is responsible for additional repulsive forces at small separation distances. These steric forces lead to a stabilization of the particle suspension at high ionic strength.
登录
查看更多内容
DOI:
10.1063/1.4765299
发表时间:
2012
期刊:
The Review of scientific instruments
影响因子:
--
作者:
V. Kuznetsov;G. Papastavrou
通讯作者:
G. Papastavrou
DOI:
10.1021/la3029726
发表时间:
2012
期刊:
Langmuir : the ACS journal of surfaces and colloids
影响因子:
--
作者:
V. Kuznetsov;G. Papastavrou
通讯作者:
G. Papastavrou
影响因子:
6.6
作者:
Neubauer, Martin P.;Bluem, Claudia;Fery, Andreas
通讯作者:
Fery, Andreas
影响因子:
3.9
作者:
Borkovec, M;Behrens, SH;Semmler, M
通讯作者:
Semmler, M
DOI:
10.1021/la700427p
发表时间:
2007
期刊:
Langmuir : the ACS journal of surfaces and colloids
影响因子:
--
作者:
E. Rotureau;F. Thomas;J. Duval
通讯作者:
J. Duval