Mass spectrometric characterization of N- and O-glycans of plasma-derived coagulation factor VII.

Factor VII (FVII) is a vitamin K-dependent glycoprotein which, in its activated form (FVIIa), participates in the coagulation process by activating factor X and factor IX. FVII is secreted as single peptide chain of 406 residues. Plasma-derived FVII undergoes many post-translational modifications such as gamma-carboxylation, N- and O-glycosylation, beta-hydroxylation.

Site-specific N-glycan characterization of human complement factor H.

Human complement factor H (CFH) is a plasma glycoprotein involved in the regulation of the alternative pathway of the complement system. A deficiency in CFH is a cause of severe pathologies like atypical haemolytic uraemic syndrome (aHUS). CFH is a 155-kDa glycoprotein containing nine potential N-glycosylation sites.