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CENP-C cupin domains at regional centromeres (SpCnp3CENP-C and DmCENP-C) possess more expansive dimer interfaces than that at point centromeres (ScMif2CENP-C). One monomer in each structure is represented as a cartoon, and interfacing residues are colored accordingly within the gray surface representation of the opposite monomer. Dimer interface areas were calculated using PISA at the European Bioinformatics Institute (http://www.ebi.ac.uk/pdbe/prot_int/pistart.html).4
