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. 2011 Jul 19;39(20):8844–8856. doi: 10.1093/nar/gkr588

Figure 1.

Figure 1.

Possible mechanisms for the double-stranded DNA cleavage by monomeric Type IIP REases. Protein monomer is shown as a quadrangle shape, DNA is depicted by two parallel black lines, gaps indicate cleaved DNA strands and a grey rectangle marks the target site. (A) Dimerization/recruitment mechanism, (B) sequential cleavage, (C) reaction via hairpin intermediate.