The equilibria between monovalent ions and phosphatidylcholine monolayer at the air/water interface.
J Membr Biol
; 246(6): 467-71, 2013 Jun.
Article
em En
| MEDLINE
| ID: mdl-23665945
ABSTRACT
The effect of monovalent ion (Liâº, Naâº, Csâº) interaction with monolayers of phosphatidylcholine (lecithin, PC) was investigated at the air/water interface. We present surface tension measurements of lipid monolayers obtained using a Langmuir method as a function of monovalent ion concentration. Measurements were carried out at 22 °C using a Teflon trough and a Nima 9000 tensiometer. Interactions between lecithin and monovalent ions result in significant deviations from the additivity rule. An equilibrium theory to describe the behavior of monolayer components at the air/water interface was developed in order to obtain the stability constants and area occupied by one molecule of PC-monovalent ion complexes (PCâ»Meâº).
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cátions Monovalentes
/
Lipossomas Unilamelares
/
Lecitinas
/
Metais Alcalinos
Idioma:
En
Revista:
J Membr Biol
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Polônia