Characteristics and molecular mechanism of adhesion proteins on reused hemodialysis membranes.
Blood Purif
; 27(4): 321-9, 2009.
Article
en En
| MEDLINE
| ID: mdl-19270451
ABSTRACT
In order to study the mechanism of protein adhesion on the Fresenius F6 polysulfone membrane dialyzer, two-dimensional gel electrophoresis, LC-ESI-MS/MS and bioinformatics methods were used to analyze the protein which adhered to the dialyzer membrane. Six of the adhered proteins account for more than 50% of the total 179 proteins, i.e. ficolin precursor, complement C3 precursor, 3 variants of MASP1 and albumin. The results also showed that easily adhered proteins have a greater percentage of acidic amino acids (p < 0.01). The isoelectric point of the 20 proteins with the most deposits is 6.2 +/- 1.08, which is obviously lower than of those with the least deposits (7.56 +/- 1.36, p < 0.01). The dipole moment of a polysulfone membrane molecule has a tendency to absorb molecules with a negative charge. These results are of significance in understanding and improving membrane protein interactions.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Proteínas Sanguíneas
/
Diálisis Renal
/
Membranas Artificiales
Límite:
Humans
Idioma:
En
Revista:
Blood Purif
Año:
2009
Tipo del documento:
Article
País de afiliación:
China