565 Orange carotenoid protein, N-terminal domain
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 | 10 | 1.1 | 9.11× | not tested | |
| Homogeneous non-metal compounds | 3 | 2.1 | 1.41× | not tested | |
| Organic acids and derivatives | 2 | 1.5 | 1.31× | not tested | |
| Organoheterocyclic compounds | 1 | 1.5 | 0.66× | 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 |
|---|---|---|---|
| DB00125 | ARG | Arginine | 1 |
| DB00145 | GLY | Glycine | 1 |
| DB06755 | BCR | Beta carotene | 1 |
Most frequently bound compounds
| PDB ligand | Name | Domains in contact |
|---|---|---|
| 45D | beta,beta-carotene-4,4'-dione | 33 |
| ECH | beta,beta-caroten-4-one | 18 |
| EQ3 | (3'R)-3'-hydroxy-beta,beta-caroten-4-one | 9 |
| CL | CHLORIDE ION | 3 |
| CYC | PHYCOCYANOBILIN | 3 |
| IOD | IODIDE ION | 2 |
| ARG | ARGININE | 1 |
| AZI | AZIDE ION | 1 |
| BCR | BETA-CAROTENE | 1 |
| GLY | GLYCINE | 1 |