4023 N-terminal a+b domain in DNA primase core
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 |
|---|---|---|---|---|---|
| Benzenoids | 1 | 0.1 | 6.94× | not tested | |
| Organic oxygen compounds | 1 | 0.4 | 2.55× | not tested | |
| Homogeneous metal compounds | 2 | 1.0 | 2.07× | not tested | |
| Nucleosides, nucleotides, and analogues | 1 | 0.6 | 1.83× | 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 |
|---|---|---|---|
| DB00171 | ATP | ATP | 1 |
| DB02431 | CTP | Cytidine-5'-Triphosphate | 1 |
| DB04005 | UTP | Uridine 5'-triphosphate | 1 |
| DB04022 | G4P | Guanosine tetraphosphate | 1 |
| DB04137 | GTP | Guanosine-5'-Triphosphate | 1 |
Most frequently bound compounds
| PDB ligand | Name | Domains in contact |
|---|---|---|
| BEN | BENZAMIDINE | 7 |
| 0O2 | guanosine 5'-(tetrahydrogen triphosphate) 3'-(trihydrogen diphosphate) | 1 |
| ATP | ADENOSINE-5'-TRIPHOSPHATE | 1 |
| CTP | CYTIDINE-5'-TRIPHOSPHATE | 1 |
| G4P | GUANOSINE-5',3'-TETRAPHOSPHATE | 1 |
| GTP | GUANOSINE-5'-TRIPHOSPHATE | 1 |
| MGmetal | MAGNESIUM ION | 1 |
| MNmetal | MANGANESE (II) ION | 1 |
| UTP | URIDINE 5'-TRIPHOSPHATE | 1 |