Computational Insights into the Dynamic Structural Features and Binding Characteristics of Recombinase UvsX Compared...

Area of Science:

• Biochemistry and Molecular Biology
• Genetics and Genomics
• Structural Biology

Background:

• RecA family recombinases are essential for homologous recombination, genome stability, and organism development.
• UvsX protein from bacteriophage T4 is a key player in phage DNA repair and replication, serving as a model for DNA metabolism studies.
• UvsX shares structural and functional similarities with the well-studied RecA protein, but its detailed molecular mechanism remains unclear.

Purpose of the Study:

• To investigate the conformational and binding properties of the UvsX protein in complex with ATP and DNA.
• To compare the molecular dynamics and properties of UvsX with RecA.

Main Methods:

• Comprehensive all-atom molecular dynamics simulations were performed on the UvsX protein dimer complex.
• Simulations of RecA were synchronized with UvsX simulations for comparative analysis.

Main Results:

• Confirmed highly conserved molecular structure characteristics and catalytic centers between RecA and UvsX.
• Identified differences in regional conformation, volatility, and DNA-binding ability between UvsX and RecA at varying temperatures.

Conclusions:

• The study provides insights into the distinct properties of UvsX compared to RecA, despite structural conservation.
• Findings are crucial for a deeper understanding and future applications of UvsX and related recombinases in DNA repair and metabolism.