Recent advancements in the discovery of protein-protein interaction inhibitors of replication protein A
James D Patrone1, Alex G Waterson2,3, Stephen W Fesik2,3,4
1Department of Chemistry , Rollins College , 1000 Holt Ave , Winter Park , FL 32789 , USA.
Abstract:
Due to the relatively high rate of DNA damage that can occur during cell cycle progression, the DNA damage response (DDR) pathway is critical for the survival of eukaryotic cells. Replication protein A (RPA) is an essential cell cycle checkpoint protein that mediates the initiation of the DDR by binding to single-stranded DNA (ssDNA) and recruiting response partners via protein-protein interactions (PPIs). This important role of RPA in initiating the DDR and cell survival has led to interest within the scientific community to investigate RPA as a potential cancer drug discovery target. To this end, RPA inhibitors have been explored via a variety of methods. This review summarizes the structure and function of RPA and highlights recent efforts to discover inhibitors of RPA-protein interactions.
Insights
Replication protein A (RPA) initiates DNA damage response critical for cell survival. Inhibitors targeting RPA-protein interactions are being explored as potential cancer therapeutics.
Area of Science:
- Molecular Biology
- Cell Biology
- Biochemistry
Background:
- The DNA damage response (DDR) pathway is crucial for eukaryotic cell survival due to frequent DNA damage during the cell cycle.
- Replication protein A (RPA) is a key checkpoint protein initiating the DDR by binding to single-stranded DNA (ssDNA).
Purpose of the Study:
- To review the structure and function of RPA.
- To highlight recent advancements in discovering inhibitors of RPA-protein interactions for potential cancer drug development.
Main Methods:
- Literature review of RPA structure, function, and DDR.
- Summary of various methods used to explore RPA inhibitors.
- Analysis of protein-protein interactions (PPIs) involving RPA.
Main Results:
- RPA's critical role in initiating DDR and promoting cell survival is established.
- Various strategies are being employed to develop RPA inhibitors.
- Understanding RPA-PPIs is key to developing targeted cancer therapies.
Conclusions:
- RPA is a significant target for cancer drug discovery due to its role in DNA repair and cell survival.
- Inhibiting RPA-protein interactions holds promise for novel cancer therapeutics.
- Further research into RPA inhibitors could lead to effective cancer treatments.
Related Concept Videos
Protein-protein Interfaces
Protein and Protein Structure
A protein's shape is critical to its function. For example, an enzyme...
Protein Networks
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
What are Proteins?
Conservation of Protein Domains Over Different Proteins
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to...
Protein Organization


