Structure of the pre-initiation complex explains CMGE biogenesis

Researchers published findings on June 17, 2026, in Nature, detailing the structure of the pre-initiation complex that explains CMGE biogenesis. Using cryo-electron microscopy and biochemical reconstitution experiments in yeast, the study provides insights into the assembly of the CMGE complex, which is a helicase responsible for establishing bidirectional DNA replication in eukaryotic cells. The research also elucidates the specific role of the firing factor Sld2 in this process. This work contributes to a fundamental understanding of DNA replication initiation, a critical process for cell division and genomic stability. The findings are expected to advance research in cell biology and potentially inform therapeutic strategies related to replication disorders.