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Updated: Aug 19, 2026

Immunofluorescence Analysis of Endogenous and Exogenous Centromere-kinetochore Proteins
Published on: March 3, 2016
Identification of novel centromere/kinetochore-associated proteins using monoclonal antibodies generated against
D A Compton1, T J Yen, D W Cleveland
1Department of Biological Chemistry Johns Hopkins University School of Medicine, Baltimore, Maryland 21205.
Abstract:
We describe the generation of 11 monoclonal antibodies that bind to the centromere/kinetochore region of human mitotic chromosomes. These antibodies were raised against mitotic chromosome scaffolds and screened for centromere/kinetochore binding by indirect immunofluorescence against purified chromosomes. Immunoblot analyses with these antibodies revealed that all of the antigens are greater than 200 kD and are components of nuclei, chromosomes, and/or chromosome scaffolds. Comparison of the immunolocalization of the antigens with that observed for the centromere-associated protein CENP-B revealed that each of these centromere/kinetochore proteins lies more peripherally to the DNA than does CENP-B. In cells normally progressing through the cell cycle, these antigens displayed four distinct patterns of centromere/kinetochore association, corresponding to a minimum of four novel centromere/kinetochore-associated proteins.
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