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Dual functional regulators coordinate DNA replication and gene expression in proliferating cells.
1Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA. bt16@cornell.edu
Frontiers in Bioscience : a Journal and Virtual Library
|September 11, 2004
Summary
Coordinating DNA replication and gene expression is vital for cell growth. This review highlights dual-functional factors that initiate DNA replication and regulate transcription, ensuring cellular proliferation and development.
Area of Science:
- Molecular Biology
- Cell Biology
- Genetics
Background:
- Cell division requires synchronized DNA replication and gene expression for proliferating cells.
- This coordination is especially critical during multicellular organism development for tissue differentiation.
- Multiple strategies exist to ensure the alignment of DNA replication and gene expression.
Purpose of the Study:
- To review the strategy of using dual-functional factors for coordinating DNA replication and gene expression.
- To highlight classical and emerging examples of these factors in prokaryotes and eukaryotes.
Main Methods:
- Literature review focusing on dual-functional proteins involved in DNA replication and transcription.
- Analysis of established examples like E. coli DnaA and SV40 T antigen.
- Examination of emerging eukaryotic examples such as E2f, Mcm1, and Mcm7.
Main Results:
- Dual-functional factors act as both replication initiators and transcription regulators.
- Classical examples demonstrate their role in origin binding and self-synthesis regulation.
- Eukaryotic examples include growth-responsive transcription factors and helicase subunits.
Conclusions:
- Dual-functional factors are a key strategy for coordinating DNA replication and gene expression.
- These factors play crucial roles in cell proliferation and developmental processes.
- Further research into these factors can elucidate fundamental mechanisms of cell cycle control.