X-group (possible homology)

324 OsmC-like

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Ligands and drugs

299

Member domains

with ligand contacts (≤ 4 Å)

18.4% of members

with DrugDomain annotations

17.1% 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
Organosulfur compounds	1	0.2	4.93×	not tested
Organic oxygen compounds	4	2.0	2.04×	not tested
Homogeneous non-metal compounds	3	2.1	1.41×	not tested
Benzenoids	1	0.7	1.39×	not tested
Organic acids and derivatives	2	1.5	1.31×	not tested
Nucleosides, nucleotides, and analogues	1	2.7	0.37×	not tested
Homogeneous metal compounds	1	4.8	0.21×	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
DB04447	DTT	1,4-Dithiothreitol	7
DB01197	X8Z	Captopril	2
DB01992	COA	Coenzyme A	2
DB03793	BEZ	Benzoic acid	2

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CL	CHLORIDE ION	13
J3S	(6S)-6,8-disulfanyloctanamide	8
DTT	2,3-DIHYDROXY-1,4-DITHIOBUTANE	7
A1EEB	6-fluoranyl-1,2-benzothiazol-3-one	4
BEZ	BENZOIC ACID	2
COA	COENZYME A	2
NAmetal	SODIUM ION	2
P6G	HEXAETHYLENE GLYCOL	2
SCN	THIOCYANATE ION	2
X8Z	L-CAPTOPRIL	2
ZNmetal	ZINC ION	1