X-group (possible homology)

237 ADP-ribosylation

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Ligands and drugs

2,233

Member domains

1,337

with ligand contacts (≤ 4 Å)

59.9% of members

1,172

with DrugDomain annotations

52.5% of members

837

with a DrugBank compound

37.5% 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.

Proteins with classified ligands

Superclasses bound (of 23)

8.9

Superclasses per 20 proteins

broader than 78% of the 256 X-groups with enough proteins to compare (median 7.6)

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
Organoheterocyclic compounds	28	8.5	3.29×	q < 0.0001
Nucleosides, nucleotides, and analogues	35	15.3	2.29×	q < 0.0001
Homogeneous non-metal compounds	14	11.9	1.18×	q = 0.59
Organic oxygen compounds	11	11.0	1.00×	q = 1.00
Organic acids and derivatives	5	8.5	0.58×	q = 0.34
Homogeneous metal compounds	13	27.1	0.48×	q = 4.2e-4
Lipids and lipid-like molecules	0	6.2	0	q = 5.0e-3
Benzenoids	14	4.0	3.47×	not tested
Phenylpropanoids and polyketides	3	1.2	2.61×	not tested
Organosulfur compounds	2	1.1	1.76×	not tested
Mixed metal/non-metal compounds	1	1.2	0.86×	not tested
Organic nitrogen compounds	1	1.8	0.57×	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
DB14128	NAD	Nadide	55
DB08348	P34	N~2~,N~2~-DIMETHYL-N~1~-(6-OXO-5,6-DIHYDROPHENANTHRIDIN-2-YL)GLYCINAMIDE	22
DB02701	NCA	Nicotinamide	19
DB09074	09L	Olaparib	16
DB11760	2YQ	Talazoparib	16
DB07232	78P	Veliparib	13
DB00157	NAI	NADH	12
DB11793	3JD	Niraparib	12
DB12332	RPB	Rucaparib	9
DB01792	APU	Adenylyl-(3'-5')-uridine 3'-monophosphate	8
DB03509	CNQ	2-(4-Chlorophenyl)-5-Quinoxalinecarboxamide	8
DB02054	GAB	Gabaculine	7
DB02059	AR6	Adenosine-5-Diphosphoribose	6
DB02338	NDP	NADPH	6
DB02690	NU1	NU1025	6
DB13877	33E	Iniparib	6
DB02498	CNA	Carba-nicotinamide-adenine-dinucleotide	5
DB07677	DRL	2-methyl-3,5,7,8-tetrahydro-4H-thiopyrano[4,3-d]pyrimidin-4-one	5
DB04429	DFL	4'-Hydroxyflavanone	4
DB00131	AMP	Adenosine phosphate	3

Most frequently bound compounds

PDB ligand	Name	Domains in contact
ZNmetal	ZINC ION	462
NAD	NICOTINAMIDE-ADENINE-DINUCLEOTIDE	56
CL	CHLORIDE ION	41
NAmetal	SODIUM ION	28
UHB	2-[4-[(2S,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]carbonylpiperazin-1-yl]-N-(1-oxidanylidene-2,3-dihydroisoindol-4-yl)ethanamide	26
P34	N~2~,N~2~-DIMETHYL-N~1~-(6-OXO-5,6-DIHYDROPHENANTHRIDIN-2-YL)GLYCINAMIDE	22
3AB	3-aminobenzamide	20
NCA	NICOTINAMIDE	19
09L	4-(3-{[4-(cyclopropylcarbonyl)piperazin-1-yl]carbonyl}-4-fluorobenzyl)phthalazin-1(2H)-one	17
2YQ	(8S,9R)-5-fluoro-8-(4-fluorophenyl)-9-(1-methyl-1H-1,2,4-triazol-5-yl)-2,7,8,9-tetrahydro-3H-pyrido[4,3,2-de]phthalazin-3-one	16
3JD	2-{4-[(3S)-piperidin-3-yl]phenyl}-2H-indazole-7-carboxamide	13
78P	(2R)-2-(7-carbamoyl-1H-benzimidazol-2-yl)-2-methylpyrrolidinium	13
DQV	[(2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl]methyl [(2R,3S,4R,5S)-5-(3-carbamoylphenyl)-3,4-dihydroxytetrahydrofuran-2-yl]methyl dihydrogen diphosphate (non-preferred name)	13
NAI	1,4-DIHYDRONICOTINAMIDE ADENINE DINUCLEOTIDE	11
A1JHC	6-[(3-chlorophenyl)methoxy]-2,3-dihydrophthalazine-1,4-dione	9
COmetal	COBALT (II) ION	9
RPB	Rucaparib	9
VJN	8-propan-2-yloxy-4~{H}-thieno[2,3-c]isoquinolin-5-one	9
20D	2-(4-fluorophenyl)-4H-chromen-4-one	8
92R	3-{4-[(dimethylamino)methyl]phenyl}-5-methoxyisoquinolin-1(2H)-one	8