Details

Autor(en) / Beteiligte

• BERGSTRÖM, Maria
• NILSSON, Mikael
• ISAKSSON, Roland
• RYDEN, Ingvar
• PAHLSSON, Peter
• OHLSON, Sten

Titel

Lectin affinity capillary electrophoresis in glycoform analysis applying the partial filling technique

Ist Teil von

• Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 2004-10, Vol.809 (2), p.323-329

Ort / Verlag

Amsterdam: Elsevier Science

Erscheinungsjahr

2004

Quelle

MEDLINE

Beschreibungen/Notizen

• The study of protein glycosylation and its significance in biological interactions is a field of growing interest. This work demonstrates a lectin-based separation of protein glycoforms of alpha1-acid glycoprotein (AGP or orosomucoid) with capillary electrophoresis. Glycoform analysis was performed with a "partial filling technique" with the lectin Concanavalin A (Con A) as affinity ligand. Con A separated human AGP into two peaks; the first peak included AGP glycoforms without biantennary glycans, and the second peak represented the fraction that had one or more biantennary glycans. The applicability of the method was demonstrated with the analysis of AGP from clinical samples and AGP treated with N-glycosidase F. The AGP separation was also used as a reporter system to estimate the dissociation constant (KD) between Con A and a competing sugar.