The SMC proteins (for structural maintenance of chromosomes)include cohesins and condensins,and are known to have all of the following properties except:

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SMC proteins, including cohesins and condensins, have a complete ATP binding site, a hinge region, the ability to condense DNA, and two coiled-coil domains. However, they do not have topoisomerase activity to produce positive supercoils. This is a function of topoisomerase enzymes, not SMC proteins.

The SMC Proteins (For Structural Maintenance of Chromosomes)include Cohesins and Condensins,and