Genetic and genomic analyses show that S. cerevisiae DNA polymerase δ extrinsically proofreads for errors by polymerase ε and itself, and demonstrate that the symmetry of replication fidelity is achieved via coordinated efforts of intrinsic and extrinsic proofreading and DNA mismatch repair.
- Zhi-Xiong Zhou
- Scott A. Lujan
- Thomas A. Kunkel