Anillin links up with RhoA to break the symmetry of cytokinetic ring closure.

Abstract

During animal cell cytokinesis, active RhoA assembles actomyosin-based contractile rings that tend to close asymmetrically. Through imaging C. elegans zygotes, Lebedev et al. (https://doi.org/10.1083/jcb.202405182) reveal that the scaffold protein, anillin, promotes asymmetric ring closure by locally sequestering RhoA from its canonical effectors and thereby limiting actomyosin contractility.