Stimulation of the Mu A protein-mediated strand cleavage reaction by the Mu B protein, and the requirement of DNA nicking for stable type 1 transpososome formation. In vitro transposition characteristics of mini-Mu plasmids carrying terminal base pair mutations.

Abstract excerpt

We have examined the effects of a T----C point mutation at the terminal nucleotide of the Mu ends in a mini-Mu plasmid on the early steps in the in vitro transposition reaction. These mutations inhibit the introduction of nicks at the Mu ends in a reaction with Mu A, HU, and integration host factor proteins. The presence of the point mutation at either the left end or the right end is sufficient to block the...

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