Table 1.
Characterization of the structure, homology with ubiquitin, size, amino acid, and conservation between species (See Supplementary Materials for species disclosure) of ubiquitin [43] and the ubiquitin-like (Ubl) proteins, neural precursor cell expressed developmentally downregulated protein 8 (NEDD8) [44] and small ubiquitin-related modifier (SUMO) [45,46].
| Ubls | Structure | Identity with Ubiquitin | Size (kDa) | Amino Acid | Highly Conserved between Species |
|---|---|---|---|---|---|
| Ubiquitin |
|
100 | 8.6 | 76 |
|
| NEDD8 |
|
59 | 8 | 81 |
|
| SUMO |
 SUMO 1  SUMO 2 |
18 | ≈12 | ≈100 |
|