Measuring rupture forces of P-selectin/PSGL-1 bonds using an optical trap assay / 生物医学工程学杂志
Journal of Biomedical Engineering
;
(6): 961-965, 2005.
Artigo
em Chinês
| WPRIM
| ID: wpr-238301
ABSTRACT
Selectin/ligand interaction plays an important role in such biological processes as inflammatory reaction, tumor metastasis, etc. External forces affect dissociation of receptor-ligand bonds. A novel approach, upon optical trap technique, was developed in this study to investigate the dissociation of P-selectin/PSGL-1 (P-Selectin Glycoprotein Ligand 1) bindings. Stiffness of optical trap was calibrated with laser power using a viscous drag method. While P-selectin and PSGL-1 molecules were functionally coated on surfaces of glass beads, respectively, the dissociation of interacting molecule bond was studied by measuring the rupture force distribution. It was found that most probable rupture force increased with loading rate at < 25 pN/s. These results complemented and validated the current theory at low loading rates.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Ligação Proteica
/
Glicoproteínas de Membrana
/
Química
/
Estrutura Terciária de Proteína
/
Óptica e Fotônica
Limite:
Humanos
Idioma:
Chinês
Revista:
Journal of Biomedical Engineering
Ano de publicação:
2005
Tipo de documento:
Artigo
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