Ten classes of promoters and their representative patterns. Each promoter pattern is composed of vertically aligned clusters of Kappa IC (y-axis) and GC% (x-axis) values. The center of weight for each pattern is represented by a black circle. These representative promoter patterns are shown in the following sections as follows: (A) AT-based, (B) CG-based, (C) ATCG-compact, (D) ATCG-balanced, (E) ATCG-middle, (F) ATCG-less, (G) AT-less, (H) CG-spike, (I) CG-less and (J) AT-spike.
Gagniuc and Ionescu-Tirgoviste BMC Genomics 2012 13:512 doi:10.1186/1471-2164-13-512