Figure 5From: Analysis of X-ray Structures of Matrix Metalloproteinases via Chaotic Map ClusteringHigh electrostatic similarity of S 3 -S 1 -S 3 ' stretches apart from gelatinases subfamily. (a) Heat map relative to the pairwise electrostatic distances for S3-S1-S3' analysis. Colours ranging from red to blue indicate shifts from high to low similarity values. (b) Spy plot of the similarity values lower than 0.93; those greater than the threshold were dropped to zero.Back to article page