X-group (possible homology)

4266 Hyaluronidase domain-like

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Ligands and drugs

177

Member domains

with ligand contacts (≤ 4 Å)

47.5% of members

with DrugDomain annotations

43.5% of members

with a DrugBank compound

16.9% 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
Organoheterocyclic compounds	4	1.2	3.29×	not tested
Organic oxygen compounds	5	1.6	3.18×	not tested
Homogeneous non-metal compounds	2	1.7	1.18×	not tested
Homogeneous metal compounds	3	3.9	0.78×	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
DB00141	NAG	N-Acetylglucosamine	2

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CAmetal	CALCIUM ION	6
CDmetal	CADMIUM ION	6
X1A	N-(5-{[6-(5-methyl[1,2,4]triazolo[1,5-a]pyrimidin-7-yl)-2,6-diazaspiro[3.4]octan-2-yl]methyl}-1,3-thiazol-2-yl)acetamide	6
CL	CHLORIDE ION	5
7NQ	~{N}-(4-ethoxyquinazolin-2-yl)propanamide	3
NAmetal	SODIUM ION	3
OAN	O-(2-ACETAMIDO-2-DEOXY D-GLUCOPYRANOSYLIDENE) AMINO-N-PHENYLCARBAMATE	3
BK9	4-ethoxyquinazoline	2
GSZ	N-[(5R,6R,7R,8S)-6,7-DIHYDROXY-5-(HYDROXYMETHYL)-2-(2-PHENYLETHYL)-1,5,6,7,8,8A-HEXAHYDROIMIDAZO[1,2-A]PYRIDIN-8-YL]-2-METHYLPROPANAMIDE	2
NAG	2-acetamido-2-deoxy-beta-D-glucopyranose	2
VGB	(5R,6R,7R,8S)-6,7-dihydroxy-5-(hydroxymethyl)-2-(2-phenylethyl)-8-(propanoylamino)-5,6,7,8-tetrahydro-1H-imidazo[1,2-a]pyridin-4-ium	2
Z0M	N-[(5R,6R,7R,8S)-6,7-DIHYDROXY-5-(HYDROXYMETHYL)-2-(2-PHENYLETHYL)-5,6,7,8-TETRAHYDROIMIDAZO[1,2-A]PYRIDIN-8-YL]-3-SULFANYLPROPANAMIDE	2
7NT	~{N}-(4-morpholin-4-ylthieno[2,3-d]pyrimidin-2-yl)propanamide	1
HGmetal	MERCURY (II) ION	1
MGmetal	MAGNESIUM ION	1
NOK	2-ACETAMIDO-1,2-DIDEOXYNOJIRMYCIN	1
X0T	7-[(2S)-2,3-DIHYDROXYPROPYL]-1,3-DIMETHYL-3,7-DIHYDRO-1H-PURINE-2,6-DIONE	1
Z7S	N-[(2S,3S,4R,5R,6R)-4,5-dihydroxy-2,6-bis(hydroxymethyl)piperidin-3-yl]acetamide	1
Z8V	N-[(2R,3S,4R,5R,6R)-4,5-dihydroxy-2,6-bis(hydroxymethyl)piperidin-3-yl]acetamide	1
ZNmetal	ZINC ION	1