X-group (possible homology)

4017 Fe-binding domain in prismane-like proteins

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Ligands and drugs

299

Member domains

247

with ligand contacts (≤ 4 Å)

82.6% of members

166

with DrugDomain annotations

55.5% of members

with a DrugBank compound

16.4% 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)

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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	0.1	7.04×	not tested
Homogeneous non-metal compounds	4	1.5	2.69×	not tested
Homogeneous metal compounds	4	3.4	1.18×	not tested
Organic oxygen compounds	1	1.4	0.73×	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
DB11588	CMO	Carbon monoxide	3
DB02078	PG5	Triglyme	2

Most frequently bound compounds

PDB ligand	Name	Domains in contact
SF4	IRON/SULFUR CLUSTER	247
FES	FE2/S2 (INORGANIC) CLUSTER	79
NImetal	NICKEL (II) ION	61
CU1metal	COPPER (I) ION	15
CMO	CARBON MONOXIDE	14
ZNmetal	ZINC ION	9
H2S	HYDROSULFURIC ACID	6
XE	XENON	6
BR	BROMIDE ION	4
B12	COBALAMIN	3
CL	CHLORIDE ION	2
F	FLUORIDE ION	2
PG5	1-METHOXY-2-[2-(2-METHOXY-ETHOXY]-ETHANE	2
UWE	$l^{3}-oxidanylidynemethylnickel	2
74C	methyl radical	1
ACE	ACETYL GROUP	1
ACO	ACETYL COENZYME *A	1
CAmetal	CALCIUM ION	1
MEE	METHANETHIOL	1
PG6	1-(2-METHOXY-ETHOXY)-2-{2-[2-(2-METHOXY-ETHOXY]-ETHOXY}-ETHANE	1