| Q8TBC4 | DB00171 | 1r4n | ATP | B | 5 | e1r4nB2 | Catalytic cysteine domain in ubiquitin-activating enzyme | Catalytic cysteine domain in ubiquitin-activating enzyme | Catalytic cysteine domain in ubiquitin-activating enzyme | n/a |
| Q8TBC4 | DB00171 | 1r4n | ATP | B | 5 | e1r4nB4 | Rossmann-like | Rossmann-related | Activating enzymes of the ubiquitin-like proteins | ThiF |
| Q8TBC4 | DB00171 | 1r4n | ATP | D | 6 | e1r4nD1 | Rossmann-like | Rossmann-related | Activating enzymes of the ubiquitin-like proteins | ThiF |
| Q8TBC4 | DB00171 | 1r4n | ATP | D | 6 | e1r4nD2 | Catalytic cysteine domain in ubiquitin-activating enzyme | Catalytic cysteine domain in ubiquitin-activating enzyme | Catalytic cysteine domain in ubiquitin-activating enzyme | n/a |
| Q8TBC4 | DB00171 | 1r4n | ATP | F | 7 | e1r4nF2 | Rossmann-like | Rossmann-related | Activating enzymes of the ubiquitin-like proteins | ThiF |
| Q8TBC4 | DB00171 | 1r4n | ATP | H | 8 | e1r4nH2 | Rossmann-like | Rossmann-related | Activating enzymes of the ubiquitin-like proteins | ThiF |
| Q8TBC4 | DB00171 | 2nvu | ATP | B | 103 | e2nvuB2 | Rossmann-like | Rossmann-related | Activating enzymes of the ubiquitin-like proteins | ThiF |