Molecular characterization of human and bovine ceruloplasmin using MALDI-TOF mass spectrometry.
Biochem Biophys Res Commun
; 288(4): 1006-10, 2001 Nov 09.
Article
in En
| MEDLINE
| ID: mdl-11689010
ABSTRACT
Using SDS-PAGE and MALDI-TOF mass spectrometry, we investigated the difference in the molecular structure between human and bovine ceruloplasmin. In both cases, we found that the protein is present in two majors forms of different molecular mass. The difference between human and bovine ceruloplasmin was more obvious when characterized by MALDI-TOF than with the SDS-PAGE analysis. Furthermore, we established that the N-glycoside content of both enzymes is dissimilar and that the N-glycosyl moieties are distributed in a distinctive fashion in two glycoproteins. Finally, it appeared that both proteins exhibited different cleavage patterns after treatment with trypsin. This study indicates that human and bovine ceruloplasmin differ not only in sugar composition but also in primary structure.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Ceruloplasmin
/
Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
Limits:
Animals
/
Humans
Language:
En
Journal:
Biochem Biophys Res Commun
Year:
2001
Document type:
Article
Affiliation country:
Canadá