Fig. 7From: Organization of DNA in a bacterial nucleoidA possible model of low-level nucleoid organization. a A fragment of EM image of E. coli nucleoid (adapted from [21]). b Genomic DNA (gray) forms loops with A-tract clusters (cyan) located at apexes and MNase resistant fragments (black) occupying loop ‘stems’. c A blow-up of a DNA loop, containing several A-tracts (cyan) and two MNase resistant fragments (black)Back to article page