X-group (possible homology)

3570 FAM3 superfamily

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Ligands and drugs

Member domains

with ligand contacts (≤ 4 Å)

23.6% of members

with DrugDomain annotations

23.6% of members

with a DrugBank compound

12.4% 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	0.25×observed / expected4×	Ratio	Significance
Organic oxygen compounds	1	0.2		5.09×	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
DB18294	LEC	AVR-48	2

Most frequently bound compounds

PDB ligand	Name	Domains in contact
MBE	4-nitrophenyl beta-D-mannopyranoside	4
6ZC	4-nitrophenyl 2-acetamido-2-deoxy-alpha-D-glucopyranoside	2
LEC	4-nitrophenyl 2-acetamido-2-deoxy-beta-D-glucopyranoside	2
NAmetal	SODIUM ION	2
PNA	4-nitrophenyl alpha-D-mannopyranoside	2
J0R	[(2R)-1-(trimethyl-$l^4-azanyl)propan-2-yl] ethanoate	1
MAN	alpha-D-mannopyranose	1