COMPND MOL_ID: 1; COMPND 2 MOLECULE: DH1052 light chain; COMPND 3 CHAIN: X, S, L; COMPND 4 FRAGMENT: Receptor Binding ; COMPND 5 ENGINEERED: YES; EXPDTA ELECTRON MICROSCOPY DBREF 7LAB X 4 200 PDB 7LAB 7LAB 4 200 SEQRES 1 X 106 LEU THR GLN SER PRO GLY THR LEU SER LEU SER PRO GLY SEQRES 2 X 106 GLU ARG ALA THR LEU SER CYS ARG ALA SER GLN SER VAL SEQRES 3 X 106 SER SER SER TYR LEU ALA TRP TYR GLN GLN LYS PRO GLY SEQRES 4 X 106 GLN ALA PRO ARG LEU LEU ILE TYR GLY ALA SER SER ARG SEQRES 5 X 106 ALA THR GLY ILE PRO ASP ARG PHE SER GLY SER GLY SER SEQRES 6 X 106 GLY THR ASP PHE THR LEU THR ILE SER ARG LEU GLU PRO SEQRES 7 X 106 GLU ASP PHE ALA VAL TYR TYR CYS GLN GLN TYR GLY SER SEQRES 8 X 106 SER PRO THR TRP THR PHE GLY GLN GLY THR LYS VAL GLU SEQRES 9 X 106 ILE LYS