X-group (possible homology)

4252 AttH-like

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Ligands and drugs

273

Member domains

with ligand contacts (≤ 4 Å)

14.7% of members

with DrugDomain annotations

13.6% of members

with a DrugBank compound

12.1% 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
Organic nitrogen compounds	1	0.1	7.95×	not tested
Lipids and lipid-like molecules	2	0.4	4.55×	not tested
Organic oxygen compounds	1	0.8	1.27×	not tested
Homogeneous non-metal compounds	1	0.9	1.18×	not tested
Homogeneous metal compounds	1	1.9	0.52×	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	5
DB03309	NHE	N-cyclohexyltaurine	4

Most frequently bound compounds

PDB ligand	Name	Domains in contact
HZC	[(1S,2S,5R)-5-methyl-2-propan-2-yl-cyclohexyl]methanamine	5
NHE	2-[N-CYCLOHEXYLAMINO]ETHANE SULFONIC ACID	4
CL	CHLORIDE ION	2
HVF	Equisetin	2
NAG	2-acetamido-2-deoxy-beta-D-glucopyranose	2
WK1	(2S)-3-[(2S,4E)-4-[[(1R,2S,4aR,6S,8R,8aS)-2-[(E)-but-2-en-2-yl]-6,8-dimethyl-1,2,4a,5,6,7,8,8a-octahydronaphthalen-1-yl]-oxidanyl-methylidene]-3,5-bis(oxidanylidene)pyrrolidin-2-yl]-2-methyl-2-oxidanyl-propanoic acid	2
MGmetal	MAGNESIUM ION	1