X-group (possible homology)

7521 B12-dependent dehydratase associated subunit

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Ligands and drugs

138

Member domains

with ligand contacts (≤ 4 Å)

43.5% of members

with DrugDomain annotations

44.9% of members

with a DrugBank compound

6.5% 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)

—

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
Organoheterocyclic compounds	3	0.8		3.95×	not tested
Homogeneous metal compounds	2	2.4		0.83×	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
DB00115	CNC	Cyanocobalamin	6

Most frequently bound compounds

PDB ligand	Name	Domains in contact
B12	COBALAMIN	42
CNC	CYANOCOBALAMIN	6
COY	CO-(ADENIN-9-YL-PENTYL)-COBALAMIN	6
CAmetal	CALCIUM ION	4
NAmetal	SODIUM ION	3
MGmetal	MAGNESIUM ION	2