X-group (possible homology)

3456 NADH-quinone oxidoreductase subunit A

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Ligands and drugs

889

Member domains

279

with ligand contacts (≤ 4 Å)

31.4% of members

166

with DrugDomain annotations

18.7% of members

with a DrugBank compound

11.0% 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
Homogeneous metal compounds	0	6.8	0	q = 4.0e-4
Hydrocarbons	4	0.1	41×	not tested
Lipids and lipid-like molecules	14	1.5	9.11×	not tested
Nucleosides, nucleotides, and analogues	2	3.8	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
DB04327	PEE	Phosphatidylethanolamine	62
DB03429	CDL	Tetrastearoyl cardiolipin	17
DB02338	NDP	NADPH	6
DB07640	DCQ	2-decyl-5,6-dimethoxy-3-methylcyclohexa-2,5-diene-1,4-dione	6
DB02043	LHG	1,2-Dipalmitoyl-Phosphatidyl-Glycerole	4
DB02686	UMQ	Undecyl-Beta-D-Maltopyranoside	2
DB09270	U10	Ubidecarenone	2
DB03426	DGD	Digalactosyl Diacyl Glycerol (Dgdg)	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
3PE	1,2-Distearoyl-sn-glycerophosphoethanolamine	180
PC1	1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE	126
PEE	1,2-dioleoyl-sn-glycero-3-phosphoethanolamine	75
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	71
CDL	CARDIOLIPIN	25
PLC	DIUNDECYL PHOSPHATIDYL CHOLINE	14
U10	UBIQUINONE-10	7
PGT	(1S)-2-{[{[(2R)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL STEARATE	6
T7X	Phosphatidylinositol	6
DGD	DIGALACTOSYL DIACYL GLYCEROL (DGDG)	5
NDP	NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE	5
UQ9	Ubiquinone-9	5
LFA	EICOSANE	4
LHG	1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE	4
3PH	1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE	3
DU0	2-[2-[(1~{S},2~{S},4~{S},5'~{R},6~{R},7~{S},8~{R},9~{S},12~{S},13~{R},16~{S})-5',7,9,13-tetramethylspiro[5-oxapentacyclo[10.8.0.0^{2,9}.0^{4,8}.0^{13,18}]icos-18-ene-6,2'-oxane]-16-yl]oxyethyl]propane-1,3-diol	3
SQD	1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL	3
DCQ	2-decyl-5,6-dimethoxy-3-methylcyclohexa-2,5-diene-1,4-dione	2
PC7	(7S)-4-HYDROXY-N,N,N-TRIMETHYL-9-OXO-7-[(PALMITOYLOXY)METHYL]-3,5,8-TRIOXA-4-PHOSPHAHEXACOSAN-1-AMINIUM 4-OXIDE	2
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