Figure 2: 3D structures of Actin1 Actin2 and Tubulin1. A) 3D structure of the protein encoded by act1, subdomain-1 is represented in red, subdomain-2 in orange, subdomain-3 in white subdomain-4 in blue; B) 3D structure of the protein encoded by act2, subdomain-1 is represented in red, subdomain-2 in orange, subdomain-3 in white subdomain-4 in blue. At subdomain-2 is represented the DNase I chain in yellow (as a loop); C) 3D structure of the protein α-tubulin encoded by the gene tub1, in yellow we can observe the GTP subdomain.