| P22515 | n/a | 5l6h | CL | A | 1105 | e5l6hA1 | Rossmann-like | Rossmann-related | Activating enzymes of the ubiquitin-like proteins | ThiF |
| P22515 | n/a | 5l6h | CL | A | 1105 | e5l6hC5 | Catalytic cysteine domain in ubiquitin-activating enzyme | Catalytic cysteine domain in ubiquitin-activating enzyme | Catalytic cysteine domain in ubiquitin-activating enzyme | UBA_E1_SCCH |
| P22515 | n/a | 5l6h | CL | C | 1105 | e5l6hC1 | beta-Grasp | E2-binding domain of E1 | E2-binding domain of E1 | E1_UFD |
| P22515 | n/a | 5l6i | CL | A | 1108 | e5l6iA3 | Rossmann-like | Rossmann-related | Activating enzymes of the ubiquitin-like proteins | ThiF |
| P22515 | n/a | 5l6i | CL | A | 1108 | e5l6iA4 | Catalytic cysteine domain in ubiquitin-activating enzyme | Catalytic cysteine domain in ubiquitin-activating enzyme | Catalytic cysteine domain in ubiquitin-activating enzyme | UBA_E1_SCCH |
| P22515 | n/a | 5l6i | CL | B | 102 | e5l6iA4 | Catalytic cysteine domain in ubiquitin-activating enzyme | Catalytic cysteine domain in ubiquitin-activating enzyme | Catalytic cysteine domain in ubiquitin-activating enzyme | UBA_E1_SCCH |
| P22515 | n/a | 5l6i | CL | C | 1109 | e5l6iC3 | Rossmann-like | Rossmann-related | Activating enzymes of the ubiquitin-like proteins | ThiF |
| P22515 | n/a | 5l6j | CL | A | 1104 | e5l6jA1 | Rossmann-like | Rossmann-related | Activating enzymes of the ubiquitin-like proteins | ThiF |
| P22515 | n/a | 5l6j | CL | A | 1104 | e5l6jA6 | Catalytic cysteine domain in ubiquitin-activating enzyme | Catalytic cysteine domain in ubiquitin-activating enzyme | Catalytic cysteine domain in ubiquitin-activating enzyme | E1_4HB |
| P22515 | n/a | 5l6j | CL | C | 1103 | e5l6jC6 | Rossmann-like | Rossmann-related | Activating enzymes of the ubiquitin-like proteins | ThiF |
| P22515 | n/a | 6zht | CL | C | 1115 | e6zhtC6 | Rossmann-like | Rossmann-related | Activating enzymes of the ubiquitin-like proteins | ThiF |
| P22515 | n/a | 7zh9 | CL | A | 1118 | e7zh9A5 | cradle loop barrel | RIFT-related | Alanine racemase-C | E1_FCCH |
| P22515 | n/a | 7zh9 | CL | A | 1118 | e7zh9A6 | Catalytic cysteine domain in ubiquitin-activating enzyme | Catalytic cysteine domain in ubiquitin-activating enzyme | Catalytic cysteine domain in ubiquitin-activating enzyme | UBA_E1_SCCH |