X-group (possible homology)

3762 Poly(ADP-ribose) glycohydrolase helical domain

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Ligands and drugs

Member domains

with ligand contacts (≤ 4 Å)

51.9% of members

with DrugDomain annotations

45.5% of members

with a DrugBank compound

36.4% 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.

Proteins with classified ligands

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.

Superclass	Proteins	Expected	Ratio	Significance
Organosulfur compounds	1	0.1	16×	not tested
Homogeneous non-metal compounds	2	0.6	3.14×	not tested
Nucleosides, nucleotides, and analogues	2	0.8	2.45×	not tested
Organic oxygen compounds	1	0.6	1.70×	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

DrugBank	PDB ligand	Name	Domains
DB02059	AR6	Adenosine-5-Diphosphoribose	2
DB03345	BME	Mercaptoethanol	2
DB02184	DTV	D-1,4-dithiothreitol	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CL	CHLORIDE ION	6
IOD	IODIDE ION	6
AR6	[(2R,3S,4R,5R)-5-(6-AMINOPURIN-9-YL)-3,4-DIHYDROXY-OXOLAN-2-YL]METHYL[HYDROXY-[[(2R,3S,4R,5S)-3,4,5-TRIHYDROXYOXOLAN-2-YL]METHOXY]PHOSPHORYL] HYDROGEN PHOSPHATE	3
DTV	(2S,3S)-1,4-DIMERCAPTOBUTANE-2,3-DIOL	3
V3L	2'-O-(5-O-phosphono-alpha-D-ribofuranosyl)adenosine 5'-(dihydrogen phosphate)	3
BME	BETA-MERCAPTOETHANOL	2
PPI	PROPANOIC ACID	1