X-group (possible homology)

3791 EDS1-PAD4 (EP) domain

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Ligands and drugs

Member domains

with ligand contacts (≤ 4 Å)

48.0% of members

with DrugDomain annotations

12.0% of members

with a DrugBank compound

12.0% 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	0.25×observed / expected4×	Ratio	Significance
Organic oxygen compounds	3	0.8		3.82×	not tested
Nucleosides, nucleotides, and analogues	3	1.1		2.75×	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
DB00171	ATP	ATP	2
DB04352	RP5	beta-D-Ribose-5-phosphate	2
DB16833	ADP	Adenosine disphosphate	2
DB02379	BGC	Beta-D-Glucose	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
APR	ADENOSINE-5-DIPHOSPHORIBOSE	8
ATP	ADENOSINE-5'-TRIPHOSPHATE	8
A1D8A	[(2R,3R,4R,5R)-5-(6-aminopurin-9-yl)-4-[(2S,3R,4S,5R)-3,4-bis(oxidanyl)-5-(phosphonooxymethyl)oxolan-2-yl]oxy-3-oxidanyl-oxolan-2-yl]methyl phosphono hydrogen phosphate	4
A1L15	[[(2~{R},3~{R},4~{R},5~{R})-5-(6-aminopurin-9-yl)-4-[(2~{S},3~{R},4~{S},5~{R})-5-[[[[(2~{R},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methoxy-oxidanyl-phosphoryl]oxy-oxidanyl-phosphoryl]oxymethyl]-3,4-bis(oxidanyl)oxolan-2-yl]oxy-3-oxidanyl-oxolan-2-yl]methoxy-oxidanyl-phosphoryl] phosphono hydrogen phosphate	4
RP5	5-O-phosphono-beta-D-ribofuranose	4
ADP	ADENOSINE-5'-DIPHOSPHATE	2
AMP	ADENOSINE MONOPHOSPHATE	2
RIA	2'-O-[(5'-PHOSPHO)RIBOSYL]ADENOSINE-5'-MONOPHOSPHATE	2
BGC	beta-D-glucopyranose	1