X-group (possible homology)

1075 Type II ABC exporter transmembrane domain fold

Open in classification tree →

Ligands and drugs

8,537

Member domains

1,110

with ligand contacts (≤ 4 Å)

13.0% of members

634

with DrugDomain annotations

7.4% of members

415

with a DrugBank compound

4.9% 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)

8.7

Superclasses per 20 proteins

broader than 72% of the 256 X-groups with enough proteins to compare (median 7.6)

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
Lipids and lipid-like molecules	51	10.3	4.94×	q < 0.0001
Nucleosides, nucleotides, and analogues	53	25.6	2.07×	q < 0.0001
Benzenoids	11	6.8	1.62×	q = 0.15
Organoheterocyclic compounds	16	14.3	1.12×	q = 0.65
Organic oxygen compounds	14	18.5	0.76×	q = 0.37
Organic acids and derivatives	10	14.3	0.70×	q = 0.32
Homogeneous metal compounds	12	45.5	0.26×	q < 0.0001
Homogeneous non-metal compounds	3	20.0	0.15×	q < 0.0001
Alkaloids and derivatives	3	0.3	9.48×	not tested
Hydrocarbons	2	0.7	3.09×	not tested
Phenylpropanoids and polyketides	3	1.9	1.56×	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
DB00171	ATP	ATP	127
DB16833	ADP	Adenosine disphosphate	69
DB04540	CLR	Cholesterol	61
DB02930	AGS	Adenosine 5'-[gamma-thio]triphosphate	34
DB01016	GBM	Glyburide	32
DB00912	BJX	Repaglinide	11
DB00141	NAG	N-Acetylglucosamine	10
DB01030	TTC	Topotecan	8
DB06240	R1H	Tariquidar	8
DB00143	GSH	Glutathione	7
DB02777	PLC	Diundecyl Phosphatidyl Choline	6
DB08820	VX7	Ivacaftor	6
DB15444	WJX	Elexacaftor	6
DB03825	RHQ	Rhodamine 6G	5
DB04327	PEE	Phosphatidylethanolamine	5
DB00125	ARG	Arginine	4
DB01204	MIX	Mitoxantrone	4
DB02767	FTT	(R)-3-hydroxytetradecanoic acid	4
DB03017	DAO	Lauric acid	4
DB03310	GDS	Glutathione disulfide	4

Most frequently bound compounds

PDB ligand	Name	Domains in contact
ATP	ADENOSINE-5'-TRIPHOSPHATE	206
CLR	CHOLESTEROL	115
ADP	ADENOSINE-5'-DIPHOSPHATE	91
GBM	5-chloro-N-(2-{4-[(cyclohexylcarbamoyl)sulfamoyl]phenyl}ethyl)-2-methoxybenzamide	54
Y01	CHOLESTEROL HEMISUCCINATE	48
POV	(2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate	46
OLC	(2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate	43
ANP	PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER	42
NAG	2-acetamido-2-deoxy-beta-D-glucopyranose	34
AGS	PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER	32
BJX	Repaglinide	30
JSG	(2~{R},4~{R},5~{R},6~{R})-6-[(1~{R})-1,2-bis(oxidanyl)ethyl]-2-[(2~{R},4~{R},5~{R},6~{R})-6-[(1~{R})-1,2-bis(oxidanyl)ethyl]-5-[(2~{S},3~{S},4~{R},5~{R},6~{R})-6-[(1~{S})-1,2-bis(oxidanyl)ethyl]-4-[(2~{R},3~{S},4~{R},5~{S},6~{R})-6-[(1~{S})-2-[(2~{S},3~{S},4~{S},5~{S},6~{R})-6-[(1~{S})-1,2-bis(oxidanyl)ethyl]-3,4,5-tris(oxidanyl)oxan-2-yl]oxy-1-oxidanyl-ethyl]-3,4-bis(oxidanyl)-5-phosphonooxy-oxan-2-yl]oxy-3-oxidanyl-5-phosphonooxy-oxan-2-yl]oxy-2-carboxy-2-[[(2~{R},3~{S},4~{R},5~{R},6~{R})-5-[[(3~{R})-3-dodecanoyloxytetradecanoyl]amino]-6-[[(2~{R},3~{S},4~{R},5~{R},6~{R})-3-oxidanyl-5-[[(3~{R})-3-oxidanyltetradecanoyl]amino]-4-[(3~{R})-3-oxidanyltetradecanoyl]oxy-6-phosphonooxy-oxan-2-yl]methoxy]-3-phosphonooxy-4-[(3~{R})-3-tetradecanoyloxytetradecanoyl]oxy-oxan-2-yl]methoxy]oxan-4-yl]oxy-4,5-bis(oxidanyl)oxane-2-carboxylic acid	28
3PE	1,2-Distearoyl-sn-glycerophosphoethanolamine	26
PTY	PHOSPHATIDYLETHANOLAMINE	24
PGV	(1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE	22
MGmetal	MAGNESIUM ION	18
P5S	O-[(R)-{[(2R)-2,3-bis(octadecanoyloxy)propyl]oxy}(hydroxy)phosphoryl]-L-serine	17
E2H	6-chloranyl-~{N}-(1-methylcyclopropyl)-1,1-bis(oxidanylidene)-4~{H}-thieno[3,2-e][1,2,4]thiadiazin-3-amine	16
HGmetal	MERCURY (II) ION	16
ZNmetal	ZINC ION	16