X-group (possible homology)

1126 Mitochondrial complex I, MWFE subunit

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Ligands and drugs

305

Member domains

224

with ligand contacts (≤ 4 Å)

73.4% of members

110

with DrugDomain annotations

36.1% of members

with a DrugBank compound

32.5% 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	0.25×observed / expected4×	Ratio	Significance
Lipids and lipid-like molecules	9	1.0		9.11×	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
DB03429	CDL	Tetrastearoyl cardiolipin	76
DB04327	PEE	Phosphatidylethanolamine	61
DB02777	PLC	Diundecyl Phosphatidyl Choline	3

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CDL	CARDIOLIPIN	183
3PE	1,2-Distearoyl-sn-glycerophosphoethanolamine	75
PEE	1,2-dioleoyl-sn-glycero-3-phosphoethanolamine	63
PC1	1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE	47
PLX	(9R,11S)-9-({[(1S)-1-HYDROXYHEXADECYL]OXY}METHYL)-2,2-DIMETHYL-5,7,10-TRIOXA-2LAMBDA~5~-AZA-6LAMBDA~5~-PHOSPHAOCTACOSANE-6,6,11-TRIOL	9
SF4	IRON/SULFUR CLUSTER	4
Q7G	2-{[(4-O-alpha-D-glucopyranosyl-alpha-D-glucopyranosyl)oxy]methyl}-4-{[(3beta,9beta,14beta,17beta,25R)-spirost-5-en-3-yl]oxy}butyl 4-O-alpha-D-glucopyranosyl-alpha-D-glucopyranoside	2
UQ5	2,3-DIMETHOXY-5-METHYL-6-(3,11,15,19-TETRAMETHYL-EICOSA-2,6,10,14,18-PENTAENYL)-[1,4]BENZOQUINONE	2
6F6	(4S,7R)-4-hydroxy-N,N,N-trimethyl-7-(octadecanoyloxy)-4,10-dioxo-3,5,9-trioxa-4lambda~5~-phosphaheptacosan-1-aminium	1
PLC	DIUNDECYL PHOSPHATIDYL CHOLINE	1