X-group (possible homology)

254 Prion-like

Ligands and drugs

230
Member domains
26
with ligand contacts (≤ 4 Å)
11.3% of members
28
with DrugDomain annotations
12.2% of members
15
with a DrugBank compound
6.5% of members

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.

6
Proteins with classified ligands
4
Superclasses bound (of 23)
—
Superclasses per 20 proteins
fewer than 20 proteins: too few to compare at equal depth

The raw number of superclasses rises with the number of proteins sampled; the per-20 value compares X-groups at equal depth.

SuperclassProteinsExpected
0.25×observed / expected4×
RatioSignificance
Homogeneous non-metal compounds41.33.14×not tested
Organoheterocyclic compounds20.92.20×not tested
Organic acids and derivatives10.91.09×not tested
Homogeneous metal compounds12.90.34×not tested
enriched (q < 0.05)depleted (q < 0.05)not significantnot tested (expected < 5)

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

DrugBankPDB ligandNameDomains
DB00143GSHGlutathione1
DB00152VIBThiamine1
DB00420P2ZPromazine1
DB00477Z80Chlorpromazine1
DB00759—Tetracycline1

Most frequently bound compounds

PDB ligandNameDomains in contact
CLCHLORIDE ION12
CDmetalCADMIUM ION9
NAmetalSODIUM ION9
GSHGlutathione1
P2ZPromazine1
VIB3-(4-AMINO-2-METHYL-PYRIMIDIN-5-YLMETHYL)-5-(2-HYDROXY-ETHYL)-4-METHYL-THIAZOL-3-IUM1
Z803-(2-chloro-10H-phenothiazin-10-yl)-N,N-dimethylpropan-1-amine1