1.1.1.336 dimer 2 * 50000, SDS-PAGE 1.1.1.336 dimer 2 * 46100, calculated 1.1.1.336 dimer monomers aggregate to dimeric form with major interactions from oligomerization domain residues 1.1.1.336 tetramer 4 * 50000, SDS-PAGE, 4 * 51400, calculated, including His-tag