4.2.3.9 ? - 644244 4.2.3.9 ? x * 36480, calculation from nucleotide sequence 644244 4.2.3.9 ? x * 39000, SDS-PAGE 644244 4.2.3.9 ? x * 39200, calculation from nucleotide sequence 644239 4.2.3.9 dimer - 678256 4.2.3.9 dimer in solution 693062 4.2.3.9 monomer - 682223 4.2.3.9 monomer 1 * 37000, SDS-PAGE 644238 4.2.3.9 monomer 39000, calculated 705304 4.2.3.9 tetramer crystal structure 693062