X-group (possible homology)

281 AraD-like aldolase/epimerase

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Ligands and drugs

648

Member domains

117

with ligand contacts (≤ 4 Å)

18.1% of members

104

with DrugDomain annotations

16.0% of members

with a DrugBank compound

11.3% 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
Homogeneous metal compounds	14	8.2	1.70×	q = 0.01
Organosulfur compounds	4	0.3	12×	not tested
Homogeneous non-metal compounds	6	3.6	1.66×	not tested
Organic oxygen compounds	4	3.3	1.20×	not tested
Organic acids and derivatives	2	2.6	0.77×	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
DB03026	PGH	Phosphoglycolohydroxamic Acid	21
DB03345	BME	Mercaptoethanol	19
DB09459	TLA	L-tartaric acid	8
DB04326	13P	Dihydroxyacetone phosphate	5
DB04349	PGO	(S)-propane-1,2-diol	5
DB01775	2HA	Dihydroxyacetone	1
DB02159	PGR	(R)-Propylene glycol	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
ZNmetal	ZINC ION	87
PGH	PHOSPHOGLYCOLOHYDROXAMIC ACID	21
BME	BETA-MERCAPTOETHANOL	19
CL	CHLORIDE ION	10
TLA	L(+)-TARTARIC ACID	8
NImetal	NICKEL (II) ION	7
13P	1,3-DIHYDROXYACETONEPHOSPHATE	5
PGO	S-1,2-PROPANEDIOL	5
FEmetal	FE (III) ION	4
FE2metal	FE (II) ION	4
MNmetal	MANGANESE (II) ION	4
2HA	Dihydroxyacetone	1
A1JKI	3-(3-methylbut-2-enyl)-4-oxidanyl-benzoic acid	1
A1L7T	(2~{R})-3-azanyl-3-methyl-2-oxidanyl-butanoic acid	1
CAmetal	CALCIUM ION	1
COmetal	COBALT (II) ION	1
MGmetal	MAGNESIUM ION	1
PGR	R-1,2-PROPANEDIOL	1