Actin ring–associated proteins and membrane trafficking components are dynamic during cytokinesis. (A) Tropomyosin is highly dynamic during cytokinesis. The full ring of Tpm2-GFP from a cell of the strain YEF6197 (TPM2-GFP CDC3-RFP) undergoing cytokinesis was analyzed by FRAP. (B and C) Membrane trafficking components are dynamic during cytokinesis. The full rings of Myo2-GFP and Exo84-GFP from cells of the strains YEF6001 (MYO2-GFP, pRS316-MYO1-mCherry) and YEF5862 (EXO84-GFP CDC3-RFP) during cytokinesis were analyzed by FRAP. WT, wild type.