310 RRF/tRNA synthetase additional domain-like
Ligands and drugs
Aggregated over all current member domains of this group. Drug annotations come from DrugDomain; buffers and crystallization additives are excluded from the tables below.
Chemical profile
ClassyFire chemical superclasses of the ligands bound by this X-group's proteins, from DrugDomain annotations.
The raw number of superclasses rises with the number of proteins sampled; the per-20 value compares X-groups at equal depth.
| Superclass | Proteins | Expected | 0.25×observed / expected4× | Ratio | Significance |
|---|---|---|---|---|---|
| Homogeneous non-metal compounds | 3 | 1.5 | 2.02× | not tested | |
| Lipids and lipid-like molecules | 1 | 0.8 | 1.30× | not tested | |
| Homogeneous metal compounds | 4 | 3.4 | 1.18× | not tested | |
| Organic acids and derivatives | 1 | 1.1 | 0.94× | not tested | |
| Organic oxygen compounds | 1 | 1.4 | 0.73× | not tested |
Unit: a protein (UniProt accession) with a ligand-binding domain in this X-group, counted once per superclass. Expected counts use each superclass's frequency across all ligand-binding X-groups; significance is Fisher's exact test with Benjamini–Hochberg correction. Buffers and crystallization additives are excluded. ECOD v295.2; the method follows the ECOD 2027 update, whose published figures used a slightly different artifact filter.
DrugBank compounds
| DrugBank | PDB ligand | Name | Domains |
|---|---|---|---|
| DB00142 | GLU | Glutamic acid | 1 |
| DB04082 | DEM | Decyloxy-Methanol | 1 |
Most frequently bound compounds
| PDB ligand | Name | Domains in contact |
|---|---|---|
| CDmetal | CADMIUM ION | 8 |
| CL | CHLORIDE ION | 3 |
| MGmetal | MAGNESIUM ION | 2 |
| BR | BROMIDE ION | 1 |
| DEM | DECYLOXY-METHANOL | 1 |
| DMU | DECYL-BETA-D-MALTOPYRANOSIDE | 1 |
| GLU | GLUTAMIC ACID | 1 |
| HGmetal | MERCURY (II) ION | 1 |
| UNX | UNKNOWN ATOM OR ION | 1 |