Antibody (immunoglobulin)PDB ID: 1IGT
Antibodies recognize foreign molecules in the blood as part of the immune system that protects us from infection. This structure includes an entire antibody.
Refined structure of an intact IgG2a monoclonal antibody.
Harris, L.J., Larson, S.B., Hasel, K.W., McPherson, A.
Journal: (1997) Biochemistry 36: 1581-1597