174 Tetraspanin transmembrane 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 | 3 | 0.4 | 6.83× | not tested | |
| Organic oxygen compounds | 1 | 0.8 | 1.27× | 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 |
|---|---|---|---|
| DB00141 | NAG | N-Acetylglucosamine | 1 |
| DB03796 | PLM | Palmitic Acid | 1 |
| DB04540 | CLR | Cholesterol | 1 |
| DB05398 | — | — | 1 |
Most frequently bound compounds
| PDB ligand | Name | Domains in contact |
|---|---|---|
| OLC | (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate | 4 |
| CLR | CHOLESTEROL | 2 |
| PLM | PALMITIC ACID | 2 |
| 46E | (2R)-3-{[(S)-(2-aminoethoxy)(hydroxy)phosphoryl]oxy}-2-(tetradecanoyloxy)propyl tetradecanoate | 1 |
| 76F | (7E,21R,24S)-27-amino-24-hydroxy-18,24-dioxo-19,23,25-trioxa-24lambda~5~-phosphaheptacos-7-en-21-yl (9Z,12E)-octadeca-9,12-dienoate | 1 |
| A1EPX | Taurolithocholic Acid | 1 |
| C14 | TETRADECANE | 1 |
| LPE | 1-O-OCTADECYL-SN-GLYCERO-3-PHOSPHOCHOLINE | 1 |
| P0E | PHOSPHATIDYL ETHANOL | 1 |
| Y01 | CHOLESTEROL HEMISUCCINATE | 1 |