| A2NU21 | n/a | 2r1w | MG | B | 218 | e2r1wB1 | Immunoglobulin-like beta-sandwich | Immunoglobulin-related | Immunoglobulin/Fibronectin type III/E set domains/PapD-like | V-set |
| A2NU21 | n/a | 2r1x | MG | A | 216 | e2r1xB2 | Immunoglobulin-like beta-sandwich | Immunoglobulin-related | Immunoglobulin/Fibronectin type III/E set domains/PapD-like | C1-set |
| A2NU21 | n/a | 2r1x | MG | B | 214 | e2r1xB1 | Immunoglobulin-like beta-sandwich | Immunoglobulin-related | Immunoglobulin/Fibronectin type III/E set domains/PapD-like | V-set |
| A2NU21 | n/a | 3dur | MG | C | 108 | e3durB1 | Immunoglobulin-like beta-sandwich | Immunoglobulin-related | Immunoglobulin/Fibronectin type III/E set domains/PapD-like | V-set |
| A2NU21 | n/a | 3dv4 | MG | A | 115 | e3dv4B1 | Immunoglobulin-like beta-sandwich | Immunoglobulin-related | Immunoglobulin/Fibronectin type III/E set domains/PapD-like | V-set |