X-group (possible homology)

110 DEATH domain

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Ligands and drugs

2,412

Member domains

106

with ligand contacts (≤ 4 Å)

4.4% of members

with DrugDomain annotations

4.0% of members

with a DrugBank compound

2.9% 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
Homogeneous metal compounds	4	6.3	0.64×	q = 0.34
Organosulfur compounds	1	0.3	3.79×	not tested
Homogeneous non-metal compounds	7	2.8	2.54×	not tested
Benzenoids	1	0.9	1.07×	not tested
Organic oxygen compounds	2	2.6	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
DB02763	MNB	5-Mercapto-2-Nitro-Benzoic Acid	3
DB12010	—	Fostamatinib	3
DB00141	NAG	N-Acetylglucosamine	2
DB04297	—	Trichostatin A	2
DB05103	—	—	2
DB11752	—	—	2
DB12651	—	—	2
DB12843	—	—	2
DB03345	BME	Mercaptoethanol	1
DB04395	—	Phosphoaminophosphonic Acid-Adenylate Ester	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CL	CHLORIDE ION	11
ZNmetal	ZINC ION	7
IOD	IODIDE ION	5
NAmetal	SODIUM ION	5
SO3	SULFITE ION	4
MNB	5-MERCAPTO-2-NITRO-BENZOIC ACID	3
AZI	AZIDE ION	2
NAG	2-acetamido-2-deoxy-beta-D-glucopyranose	2
SE	SELENIUM ATOM	2
BME	BETA-MERCAPTOETHANOL	1
MGmetal	MAGNESIUM ION	1
MNmetal	MANGANESE (II) ION	1