Model of the budding yeast
kinetochore. (A) Revision of the kinetochore
model presented in Measday et al. (2002), which now
includes Chl4p and Iml3p as part of the outer kinetochore.
Mif2p has also been added to the diagram because of its two-hybrid
interaction with Chl4p. (B) Proposed molecular architecture of the
proteins that have been examined in this article, deduced from
requirements for CEN DNA interaction, localization, and
protein–protein interactions. Arrows represent requirements for
interaction with CEN DNA, beginning with the
complex/protein interacting with CEN DNA, and pointed
toward the complex/protein required for the interaction. (a) From Ortiz
et al. (1999). (b) From Measday et al.
(2002).