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Biochemistry of homologous recombination in Escherichia coli.
Homologous recombination is a fundamental biological process. Biochemical understanding of this process is most advanced for Escherichia coli. At least 25 gene products are involved in promotingExpand
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BLM-DNA2-RPA-MRN and EXO1-BLM-RPA-MRN constitute two DNA end resection machineries for human DNA break repair.
Repair of dsDNA breaks requires processing to produce 3'-terminated ssDNA. We biochemically reconstituted DNA end resection using purified human proteins: Bloom helicase (BLM); DNA2Expand
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Purified human BRCA2 stimulates RAD51-mediated recombination
Mutation of the breast cancer susceptibility gene, BRCA2, leads to breast and ovarian cancers. Mechanistic insight into the functions of human BRCA2 has been limited by the difficulty of isolatingExpand
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Initiation of genetic recombination and recombination-dependent replication.
Recombination initiates at double-stranded DNA breaks and at single-stranded DNA gaps. These DNA strand discontinuities can arise from DNA-damaging agents and from normal DNA replication when the DNAExpand
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DNA end resection by Dna2-Sgs1-RPA and its stimulation by Top3-Rmi1 and Mre11-Rad50-Xrs2
The repair of DNA double-strand breaks (DSBs) by homologous recombination requires processing of broken ends. For repair to start, the DSB must first be resected to generate a 3′-single-stranded DNAExpand
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RecFOR proteins load RecA protein onto gapped DNA to accelerate DNA strand exchange: a universal step of recombinational repair.
Genetic evidence suggests that the RecF, RecO, and RecR (RecFOR) proteins participate in a common step of DNA recombination and repair, yet the biochemical event requiring collaboration of all threeExpand
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RecBCD Enzyme and the Repair of Double-Stranded DNA Breaks
SUMMARY The RecBCD enzyme of Escherichia coli is a helicase-nuclease that initiates the repair of double-stranded DNA breaks by homologous recombination. It also degrades linear double-stranded DNA,Expand
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The Srs2 helicase prevents recombination by disrupting Rad51 nucleoprotein filaments
Homologous recombination is a ubiquitous process with key functions in meiotic and vegetative cells for the repair of DNA breaks. It is initiated by the formation of single-stranded DNA on whichExpand
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Rad52 protein stimulates DNA strand exchange by Rad51 and replication protein A
The generation of a double-strand break in the Saccharomyces cerevisiae genome is a potentially catastrophic event that can induce cell-cycle arrest or ultimately result in loss of cell viability.TheExpand
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Crystal structure of RecBCD enzyme reveals a machine for processing DNA breaks
RecBCD is a multi-functional enzyme complex that processes DNA ends resulting from a double-strand break. RecBCD is a bipolar helicase that splits the duplex into its component strands and digestsExpand
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