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Selectivity of water-soluble proteins in single-walled carbon nanotube dispersions

Authors :
Satoshi Ohshima
Takeshi Saito
Sumio Iijima
Motoo Yumura
Koji Matsuura
Toshiya Okazaki
Source :
Chemical Physics Letters. 429:497-502
Publication Year :
2006
Publisher :
Elsevier BV, 2006.

Abstract

Proteins were screened by preparing dispersions of SWNTs to investigate the driving force of the interaction between single-walled carbon nanotubes (SWNTs) of mean diameter 1 nm and water-soluble proteins. Egg white lysozyme (LYS) and bovine serum albumin (BSA) dispersed SWNTs, whereas papain and pepsin could not. Far-UV circular dichroism spectra indicated that the LYS and BSA molecules that coat SWNT surfaces were partially denatured. From the amino acid composition, we ascribed the main driving force to the hydrophobic interactions between the side-wall of the SWNT and the inner hydrophobic domain exposed to the solvent during the three-dimensional change of the protein induced by sonication.

Details

ISSN :
00092614
Volume :
429
Database :
OpenAIRE
Journal :
Chemical Physics Letters
Accession number :
edsair.doi...........23858c3b43abd27594c289eb7c2e645b
Full Text :
https://doi.org/10.1016/j.cplett.2006.08.044