Fig. 4From: Matrix metalloproteinase9 as the protein target in anti-breast cancer drug discovery: an approach by targeting hemopexin domainThe 3D structure of hemopexin domains. a The dimer PEX9 showing hydrophobic interactions at blade 4 interface with sulfate ions bound at the blade 1 and blade 3. b The superposition of PEX1 (cyan ribbon), PEX2 (red ribbon) and PEX13 (magenta ribbon)Back to article page