3385 Allergen Alt a 1
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 |
|---|---|---|---|---|---|
| Lipids and lipid-like molecules | 1 | 0.2 | 4.55× | not tested | |
| Organoheterocyclic compounds | 1 | 0.3 | 3.29× | not tested | |
| Homogeneous non-metal compounds | 1 | 0.4 | 2.36× | not tested | |
| Homogeneous metal compounds | 1 | 1.0 | 1.03× | 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
No DrugBank compounds are annotated on this group's domains.
Most frequently bound compounds
| PDB ligand | Name | Domains in contact |
|---|---|---|
| 0FU | 2,5,6-triaminopyrimidin-4-ol | 1 |
| 8AC | 8-aminooctanoic acid | 1 |
| CAmetal | CALCIUM ION | 1 |
| CL | CHLORIDE ION | 1 |
| UNX | UNKNOWN ATOM OR ION | 1 |