3.1.21.5	database information: http://rebase.neb.com	
3.1.21.5	real-time imaging of enzyme at scan rates of 1-3 frames per s. EcoP15I translocates DNA in an ATP-dependent manner, at a rate of 79 bp/s, resulting in the accumulation of supercoiling. EcoP15I bound to its recognition site also makes nonspecific contacts with other DNA sites, thus forming DNA loops and reducing the distance between the two recognition sites	
3.1.21.5	study of enzyme-DNA pre-cleavage complexes by atomic force microscopy. DNA loops observed are formed by a contact between site-bound EcoP15I enzyme and a nonspecific region of DNA, and do not result from translocation. Model for restricition by type III enzymes involving both structural elements, and a functional reason for the unusual site orientation required for the cleavage reaction