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Title: Horizontal Gene Transfer - Prokaryotes? Post by: DLS on Jun 25, 2016 Transposons can be Composite, Complex, Conjugative, or Retrotransposons. Replicative Transposition leaves a copy in original & new DNA locations while Non-Replicative Transposition is cut-and-paste.
But, what is the big picture?... How do Non-Replicative & Replicative Transposition differ from Recombination? How do the 4 Transposon types actually do transposition? Title: Re: Horizontal Gene Transfer - Prokaryotes? Post by: psyche360 on Jun 27, 2016 Conservative transposition refers to the movement of large elements, originally classified as transposons, but now considered to be episomes. The mechanism of movement resembles that of phage lambda.
Nonreplicative transposition describes the movement of a transposon that leaves a donor site (usually generating a double-strand break) and moves to a new site. Replicative transposition describes the movement of a transposon by a mechanism in which first it is replicated, and then one copy is transferred to a new site. Resolvase is enzyme activity involved in site-specific recombination between two transposons present as direct repeats in a cointegrate structure. Transposase is the enzyme activity involved in insertion of transposon at a new site. |