Naofumi Handa
Institution:
Kowalczykowski Lab
Davis, CA, United States
https://www.mysciencework.com/profile/naofumi.handa
Summary
Published articles Show More
Direct visualization of RecBCD movement reveals cotranslocation of the RecD motor after chi recognition.
Published in Molecular Cell
In Escherichia coli, chi (5 -GCTGGTGG-3 ) is a recombination hotspot recognized by the RecBCD enzyme. Recognition of chi reduces both nuclease activity and translocation speed of RecBCD and activates RecA-loading ability. RecBCD has two motor subunits, RecB and RecD, which act simultaneously but independently. A longstanding hypothesis to explain t...
The AddAB helicase/nuclease forms a stable complex with its cognate chi sequence during translocation.
Published in Journal of Biological Chemistry
The Bacillus subtilis AddAB enzyme possesses ATP-dependent helicase and nuclease activities, which result in the unwinding and degradation of double-stranded DNA (dsDNA) upon translocation. Similar to its functional counterpart, the Escherichia coli RecBCD enzyme, it also recognizes and responds to a specific DNA sequence, referred to as Chi (chi)....
A RecA mutant, RecA(730), suppresses the recombination deficiency of the RecBC(1004)D-chi* interaction in vitro and in v...
Published in Journal of Molecular Biology
In Escherichia coli, homologous recombination initiated at double-stranded DNA breaks requires the RecBCD enzyme, a multifunctional heterotrimeric complex that possesses processive helicase and exonuclease activities. Upon encountering the DNA regulatory sequence, chi, the enzymatic properties of RecBCD enzyme are altered. Its helicase activity is ...
