3.1.1.24 ? x * 40000, SDS-PAGE 3.1.1.24 dimer 2 * 12000, SDS-Page 3.1.1.24 homodimer x-ray crystallography 3.1.1.24 additional information primarily as dimers, two further bands appear, the protein may associate to form higher oligomers 3.1.1.24 trimer 3 * 11000, SDS-PAGE