X-group (possible homology)

305 DCoH-like

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Ligands and drugs

4,154

Member domains

144

with ligand contacts (≤ 4 Å)

3.5% of members

110

with DrugDomain annotations

2.6% of members

with a DrugBank compound

1.1% 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	6	5.8	1.03×	q = 1.00
Organosulfur compounds	1	0.2	4.11×	not tested
Lipids and lipid-like molecules	2	1.3	1.52×	not tested
Organoheterocyclic compounds	2	1.8	1.10×	not tested
Organic acids and derivatives	1	1.8	0.55×	not tested
Homogeneous non-metal compounds	1	2.6	0.39×	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
DB04400	HBI	7,8-dihydrobiopterin	9
DB00142	GLU	Glutamic acid	4
DB02562	H2B	Quinonoid 7,8-Tetrahydrobiopterin	2

Most frequently bound compounds

PDB ligand	Name	Domains in contact
MGmetal	MAGNESIUM ION	52
1N7	CHAPSO	18
F3S	FE3-S4 CLUSTER	13
HBI	7,8-DIHYDROBIOPTERIN	8
4QM	(3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-10,13-dimethyl-17-[(2R)-pentan-2-yl]-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-3,7,12-triol	6
SCN	THIOCYANATE ION	4
SF4	IRON/SULFUR CLUSTER	3
CL	CHLORIDE ION	2
H2B	2-AMINO-6-(1,2-DIHYDROXY-PROPYL)-7,8-DIHYDRO-6H-PTERIDIN-4-ONE	2
IOD	IODIDE ION	2
NAmetal	SODIUM ION	1
NImetal	NICKEL (II) ION	1
SRmetal	STRONTIUM ION	1
ZNmetal	ZINC ION	1