Interactions between lambda Int molecules bound to sites in the region of strand exchange are required for efficient Holliday junction resolution.

Abstract excerpt

lambda Site-specific recombination proceeds via two sequential single-strand exchanges that first generate and then resolve a Holliday recombination intermediate. The resolution of artificial Holliday junctions (chi-forms) is well suited to studying the mechanisms involved in reciprocal strand exchange because the linear products of this reaction are stable and easily quantitated. To study the interactions...

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