In a Nature paper published online in advance this week, investigators at the University of Tokyo show that the fission yeast kinetochore proteins Pcs1 and Mde4 "act as a condensin recruiter at kinetochores," and that "overall condensin association with chromatin is governed by the chromosomal passenger kinase Aurora B." The Tokyo team says that, overall, its study reports the "molecular basis for the spatiotemporal regulation of mitotic chromosome architecture."