X-group (possible homology)

7524 ALDH-like

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Ligands and drugs

7,954

Member domains

2,953

with ligand contacts (≤ 4 Å)

37.1% of members

2,952

with DrugDomain annotations

37.1% of members

2,505

with a DrugBank compound

31.5% 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.

120

Proteins with classified ligands

Superclasses bound (of 23)

9.0

Superclasses per 20 proteins

broader than 79% 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
Nucleosides, nucleotides, and analogues	97	32.7	2.97×	q < 0.0001
Organic acids and derivatives	23	18.3	1.26×	q = 0.32
Organic oxygen compounds	26	23.6	1.10×	q = 0.65
Benzenoids	8	8.7	0.93×	q = 1.00
Homogeneous non-metal compounds	20	25.5	0.79×	q = 0.34
Lipids and lipid-like molecules	10	13.2	0.76×	q = 0.54
Organoheterocyclic compounds	12	18.2	0.66×	q = 0.18
Homogeneous metal compounds	37	58.1	0.64×	q = 3.3e-4
Organic nitrogen compounds	7	3.8	1.85×	not tested
Organosulfur compounds	3	2.4	1.23×	not tested
Phenylpropanoids and polyketides	2	2.5	0.81×	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	1,031
DB03461	NAP	Nicotinamide adenine dinucleotide phosphate	360
DB00536	GAI	Guanidine	220
DB00157	NAI	NADH	156
DB02338	NDP	NADPH	119
DB16833	ADP	Adenosine disphosphate	51
DB02263	G3H	D-glyceraldehyde 3-phosphate	40
DB03174	POA	Phosphonoacetaldehyde	32
DB03345	BME	Mercaptoethanol	32
DB03904	URE	Urea	20
DB04447	DTT	1,4-Dithiothreitol	20
DB05483	6PC	Picolinic acid	20
DB07950	IAC	Indoleacetic acid	20
DB00172	PRO	Proline	18
DB00117	HIS	Histidine	17
DB00139	SIN	Succinic acid	17
DB02115	DZN	Daidzin	16
DB02823	PAE	Phosphonoacetic Acid	16
DB02912	1VU	Propanoyl-CoA	16
DB03811	HSO	Histidinol	15

Most frequently bound compounds

PDB ligand	Name	Domains in contact
NAD	NICOTINAMIDE-ADENINE-DINUCLEOTIDE	1,015
NAmetal	SODIUM ION	458
NAP	NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE	357
GAI	GUANIDINE	219
Kmetal	POTASSIUM ION	124
NAI	1,4-DIHYDRONICOTINAMIDE ADENINE DINUCLEOTIDE	115
NDP	NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE	108
CL	CHLORIDE ION	107
UN1	2-AMINOHEXANEDIOIC ACID	48
MRD	(4R)-2-METHYLPENTANE-2,4-DIOL	42
G3H	GLYCERALDEHYDE-3-PHOSPHATE	40
ADP	ADENOSINE-5'-DIPHOSPHATE	38
MGmetal	MAGNESIUM ION	38
BME	BETA-MERCAPTOETHANOL	32
BXB	N-(1,3-benzodioxol-5-ylmethyl)-2,6-dichlorobenzamide	32
POA	PHOSPHONOACETALDEHYDE	32
ZNmetal	ZINC ION	27
2VS	(2Z,4E)-2-hydroxy-6-oxohexa-2,4-dienoic acid	24
CAmetal	CALCIUM ION	23
TXE	[[(2R,3S,4R,5R)-5-[(3R)-3-aminocarbonyl-3,4-dihydro-2H-pyridin-1-yl]-3,4-bis(oxidanyl)oxolan-2-yl]methoxy-oxidanidyl-phosphoryl] [(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methyl phosphate	22