Characterization of protein higher order structure using vibrational circular dichroism spectroscopy.
Curr Pharm Biotechnol
; 14(2): 199-208, 2013.
Article
em En
| MEDLINE
| ID: mdl-23167760
ABSTRACT
Better understanding of protein higher order structures (HOS) is of major interest to researchers in the field of biotechnology and biopharmaceutics. Monitoring a protein's HOS is crucial towards understanding the impact of molecular conformation on the biotechnological application. In addition, maintaining the HOS is critical for achieving robust processes and developing stable formulations of therapeutic proteins. Loss of HOS contributes to increased aggregation, enhanced immunogenicity and loss of function. Selecting the proper biophysical methods to monitor the secondary and tertiary structures of therapeutic proteins remains the central question in this field. In this study, both Fourier Transform Infrared (FTIR) and vibrational circular dichroism (VCD) spectroscopy are employed to characterize the secondary structures of various proteins as a function of temperature and pH. Three proteins with different secondary structures were examined, human serum albumin (HSA), myoglobin, and the monoclonal antibody, ofatumumab. This work demonstrates that VCD is useful technique for monitoring subtle secondary structure changes of protein therapeutics that may occur during processing or handling.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Albumina Sérica
/
Dicroísmo Circular
/
Anticorpos Monoclonais
/
Mioglobina
Limite:
Humans
Idioma:
En
Revista:
Curr Pharm Biotechnol
Ano de publicação:
2013
Tipo de documento:
Article