ADSORPTION OF POLYPEPTIDES - INFLUENCE OF THEIR NATURE AND DISSOLVED OXYANIONS - THE PARTICULAR CASE OF PLYS-L-)(SO4(2)

Authors
SINAN F VANEL P SCHUHMANN D
Citation
F. Sinan et al., ADSORPTION OF POLYPEPTIDES - INFLUENCE OF THEIR NATURE AND DISSOLVED OXYANIONS - THE PARTICULAR CASE OF PLYS-L-)(SO4(2), Comptes rendus de l'Academie des sciences. Serie II. Mecanique, physique, chimie, astronomie, 320(3), 1995, pp. 137-140
Citations number
7
Categorie Soggetti
Multidisciplinary Sciences
Journal title
Comptes rendus de l'Academie des sciences. Serie II. Mecanique, physique, chimie, astronomie → ACNP
ISSN journal
12518069
Volume
320
Issue
3
Year of publication
1995
Part
1
Pages
137 - 140
Database
ISI
SICI code
1251-8069(1995)320:3<137:AOP-IO>2.0.ZU;2-Y
Abstract
The adsorption of polypeptides (L PLys, DL PAla, DL PAg, DL PAsp) on m ercury in the presence of 0.1 M Na2SO4 and that of PLys in the presenc e of salts (0.1 M) with other oxyanions was studied. The maximum surfa ce excess does aot depend on the surface charge of mercery in a range including the zero charge. A particular behaviour was observed in the case of the system PLys + Na2SO4 : PLys is adsorbed as helix alpha. It is explained by the effect of the SO42- anion favouring the conformat ion cu in solution and by the presence of the NH3+ group in Lys, inter acting with mercury.