question: Is there any link between CTF4 and CTF18 during sister chromatid cohesion?
answer: Yes. CTF4 and CTF18 are required for high-fidelity chromosome segregation. Both exhibit genetic and physical ties to replication fork constituents. Absence of either CTF4 or CTF18 causes sister chromatid cohesion failure and leads to a preanaphase accumulation of cells that depends on the spindle assembly checkpoint. The physical and genetic interactions between CTF4, CTF18, and core components of replication fork complexes suggest that both gene products act in association with the replication fork to facilitate sister chromatid cohesion.