X-group (possible homology)

3012 Cof C2 cap domain

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Ligands and drugs

621

Member domains

104

with ligand contacts (≤ 4 Å)

16.7% of members

with DrugDomain annotations

15.8% of members

with a DrugBank compound

9.0% 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	10	6.3	1.59×	q = 0.08
Mixed metal/non-metal compounds	2	0.3	7.43×	not tested
Homogeneous non-metal compounds	6	2.8	2.17×	not tested
Organic oxygen compounds	5	2.6	1.96×	not tested
Organic acids and derivatives	1	2.0	0.50×	not tested
Nucleosides, nucleotides, and analogues	1	3.5	0.28×	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
DB02835	G16	Alpha-D-Glucose 1,6-Bisphosphate	6
DB00145	GLY	Glycine	2
DB02007	G6P	alpha-D-glucose 6-phosphate	1
DB02263	G3H	D-glyceraldehyde 3-phosphate	1
DB02900	M6P	alpha-D-mannose 6-phosphate	1
DB04566	IMP	Inosinic Acid	1
DB17678	M1P	Alpha-D-mannose 1-phosphate	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CL	CHLORIDE ION	25
MGmetal	MAGNESIUM ION	25
NAmetal	SODIUM ION	6
B16	1,6-di-O-phosphono-beta-D-glucopyranose	4
CAmetal	CALCIUM ION	4
GLY	GLYCINE	4
G16	1,6-di-O-phosphono-alpha-D-glucopyranose	3
AF3	ALUMINUM FLUORIDE	2
OXM	OXAMIC ACID	2
VN4	oxido(dioxo)vanadium	2
WO6	trioxido(oxo)tungsten	2
G3H	GLYCERALDEHYDE-3-PHOSPHATE	1
G6P	6-O-phosphono-alpha-D-glucopyranose	1
GLC	alpha-D-glucopyranose	1
IMP	INOSINIC ACID	1
M1P	1-O-phosphono-alpha-D-mannopyranose	1
M6P	6-O-phosphono-alpha-D-mannopyranose	1
UNL	Unknown ligand	1