X-group (possible homology)

270 FMT C-terminal domain-like

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Ligands and drugs

1,149

Member domains

with ligand contacts (≤ 4 Å)

7.8% of members

with DrugDomain annotations

7.5% of members

with a DrugBank compound

5.3% 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	1	8.7	0.12×	q = 4.9e-4
Nucleosides, nucleotides, and analogues	15	4.9	3.06×	not tested
Organic acids and derivatives	6	2.8	2.19×	not tested
Organoheterocyclic compounds	5	2.7	1.83×	not tested
Organic oxygen compounds	2	3.5	0.57×	not tested
Homogeneous non-metal compounds	1	3.8	0.26×	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
DB03434	MPO	3-(N-morpholino)propanesulfonic acid	14
DB03256	FON	(6R)-Folinic acid	13
DB03103	TYD	Thymidine-5'- Diphosphate	11
DB01992	COA	Coenzyme A	8
DB02031	THG	(6S)-5,6,7,8-tetrahydrofolic acid	4
DB00116	—	—	2
DB03435	UDP	Uridine-5'-Diphosphate	2
DB03685	U5P	Uridine monophosphate	2
DB03751	DAU	2'deoxy-Thymidine-5'-Diphospho-Alpha-D-Glucose	2
DB04315	GDP	Guanosine-5'-Diphosphate	2
DB00158	FOL	Folic acid	1
DB02078	PG5	Triglyme	1
DB02857	GMP	Guanosine	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
NAmetal	SODIUM ION	17
MPO	3[N-MORPHOLINO]PROPANE SULFONIC ACID	14
TYD	THYMIDINE-5'-DIPHOSPHATE	13
0FX	dTDP-4-amino-4,6-dideoxyglucose	12
T3F	(3R,4S,5R,6R)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl][hydroxy-[[(2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy]phosphoryl] hydrogen phosphate	9
COA	COENZYME A	8
T3Q	[(3R,4S,5S,6R)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl][hydroxy-[[(2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy]phosphoryl] hydrogen phosphate	8
FON	N-{[4-({[(6R)-2-amino-5-formyl-4-oxo-1,4,5,6,7,8-hexahydropteridin-6-yl]methyl}amino)phenyl]carbonyl}-L-glutamic acid	4
G3N	(2R,3R,4S,5S)-5-amino-3,4-dihydroxytetrahydro-2H-pyran-2-yl [(2R,3S,4R,5R)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3,4-dihydroxytetrahydrofuran-2-yl]methyl dihydrogen diphosphate	4
THG	(6S)-5,6,7,8-TETRAHYDROFOLATE	3
1YA	N-{4-[{[(6S)-2-amino-4-oxo-3,4,5,6,7,8-hexahydropteridin-6-yl]methyl}(formyl)amino]benzoyl}-L-glutamic acid	2
CL	CHLORIDE ION	2
DAU	2'DEOXY-THYMIDINE-5'-DIPHOSPHO-ALPHA-D-GLUCOSE	2
EP1	3-[4-(2-HYDROXYETHYL)PIPERAZIN-1-YL]PROPANE-1-SULFONIC ACID	2
FNF	(2R,3R,4S,5R,6R)-4-(formylamino)-3,5-dihydroxy-6-methyltetrahydro-2H-pyran-2-yl [(2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-2-yl]methyl dihydrogen diphosphate (non-preferred name)	2
GDP	GUANOSINE-5'-DIPHOSPHATE	2
U5P	URIDINE-5'-MONOPHOSPHATE	2
UDP	URIDINE-5'-DIPHOSPHATE	2
1YF	[(2R,3R,4S,5S,6R)-4-formamido-6-methyl-3,5-bis(oxidanyl)oxan-2-yl] [[(2R,3S,5R)-5-[5-methyl-2,4-bis(oxidanylidene)pyrimidin-1-yl]-3-oxidanyl-oxolan-2-yl]methoxy-oxidanyl-phosphoryl] hydrogen phosphate	1
1YJ	N-[4-({[(6R)-2-amino-4-oxo-3,4,5,6,7,8-hexahydropteridin-6-yl]methyl}amino)benzoyl]-L-glutamic acid	1