380 Kringle-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 metal compounds | 4 | 6.8 | 0.59× | q = 0.25 | |
| Organic nitrogen compounds | 2 | 0.4 | 4.54× | not tested | |
| Organic oxygen compounds | 9 | 2.8 | 3.27× | not tested | |
| Lipids and lipid-like molecules | 3 | 1.5 | 1.95× | not tested | |
| Homogeneous non-metal compounds | 5 | 3.0 | 1.68× | not tested | |
| Organoheterocyclic compounds | 3 | 2.1 | 1.41× | not tested | |
| Organic acids and derivatives | 3 | 2.1 | 1.41× | not tested | |
| Benzenoids | 1 | 1.0 | 0.99× | 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 | 19 |
| DB01593 | — | — | 8 |
| DB14487 | — | — | 8 |
| DB00513 | ACA | Aminocaproic acid | 6 |
| DB00786 | — | Marimastat | 6 |
| DB01197 | — | Captopril | 6 |
| DB03945 | — | N,N,N-Trimethyl-2-(phosphonooxy)ethanaminium | 6 |
| DB12843 | — | — | 6 |
| DB09130 | — | — | 5 |
| DB12831 | — | — | 5 |
| DB14533 | — | — | 5 |
| DB00313 | — | — | 4 |
| DB02264 | — | — | 4 |
| DB05434 | — | — | 4 |
| DB12307 | — | Foretinib | 4 |
| DB00143 | — | Glutathione | 3 |
| DB00302 | AMH | Tranexamic acid | 3 |
| DB01017 | — | Minocycline | 3 |
| DB04866 | — | Halofuginone | 3 |
| DB05495 | — | — | 3 |
Most frequently bound compounds
| PDB ligand | Name | Domains in contact |
|---|---|---|
| CL | CHLORIDE ION | 21 |
| NAG | 2-acetamido-2-deoxy-beta-D-glucopyranose | 21 |
| ACA | 6-AMINOHEXANOIC ACID | 7 |
| Kmetal | POTASSIUM ION | 4 |
| PC | PHOSPHOCHOLINE | 4 |
| ZNmetal | ZINC ION | 4 |
| A1AAK | muvalaplin | 3 |
| AMH | TRANS-4-AMINOMETHYLCYCLOHEXANE-1-CARBOXYLIC ACID | 3 |
| BCN | BICINE | 3 |
| MRD | (4R)-2-METHYLPENTANE-2,4-DIOL | 3 |
| 5C3 | 4-(aminomethyl)-N-(benzenesulfonyl)cyclohexanecarboxamide | 2 |
| A1AAM | (2S,2'S)-3,3'-[carbonylbis(azanediyl-3,1-phenylene)]bis{2-[(3R)-pyrrolidin-1-ium-3-yl]propanoate} | 2 |
| CXS | 3-CYCLOHEXYL-1-PROPYLSULFONIC ACID | 2 |
| HKY | 1,2,3,4-tetrahydroisoquinoline-6-carboxylic acid | 2 |
| HWF | (2S)-3-phenyl-2-[(3R)-pyrrolidin-3-yl]propanoic acid | 2 |
| MPO | 3[N-MORPHOLINO]PROPANE SULFONIC ACID | 2 |
| 12P | DODECAETHYLENE GLYCOL | 1 |
| 54O | 3-hydroxypropane-1-sulfonic acid | 1 |
| 6O5 | 3-(furan-2-yl)propanoic acid | 1 |
| BU6 | 5-chloro-2-fluoro-N-[1-(4-piperidyl)pyrazol-4-yl]benzenesulfonamide | 1 |