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The RecA strand exchange reaction as shown from single-molecule studies

The RecA strand exchange reaction as shown from single-molecule studies
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Description: The black strand associated with RecA at the outset is complementary to the red strand in the duplex.

Synapsis occurs to (rightward in the center diagram), with each RecA molecule displaced after its associated DNA has base-paired with its complement.

In this model reaction the displaced blue strand is wrapped around the newly formed duplex.

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Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=35012
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