X-group (possible homology)

231 MocoBD/DmpA-related

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Ligands and drugs

1,003

Member domains

442

with ligand contacts (≤ 4 Å)

44.1% of members

432

with DrugDomain annotations

43.1% of members

399

with a DrugBank compound

39.8% 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)

9.7

Superclasses per 20 proteins

broader than 91% 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
Nucleosides, nucleotides, and analogues	15	8.5	1.77×	q = 0.03
Homogeneous non-metal compounds	9	6.6	1.37×	q = 0.35
Homogeneous metal compounds	15	15.0	1.00×	q = 1.00
Organic oxygen compounds	3	6.1	0.49×	q = 0.33
Mixed metal/non-metal compounds	14	0.6	22×	not tested
Phenylpropanoids and polyketides	2	0.6	3.15×	not tested
Benzenoids	6	2.2	2.69×	not tested
Organoheterocyclic compounds	11	4.7	2.34×	not tested
Organic acids and derivatives	4	4.7	0.85×	not tested
Lipids and lipid-like molecules	2	3.4	0.59×	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
DB03328	MOS	Dioxo(sulfanyl)molybdenum	135
DB03300	MCN	Pterin Cytosine Dinucleotide	46
DB08844	URC	Uric acid	46
DB00936	SAL	Salicylic acid	36
DB02137	PCD	Molybdenum cofactor	34
DB04076	HPA	Hypoxanthine	20
DB05262	141	Oxypurinol	17
DB02134	XAN	Xanthine	16
DB03147	FAD	Flavin adenine dinucleotide	14
DB00157	NAI	NADH	12
DB03197	HHR	6-Hydroxymethylpterin	8
DB18509	AST	Arsenite ion	8
DB11091	PEO	Hydrogen peroxide	6
DB01685	FYX	Topiroxostat	5
DB03841	YSH	Niraxostat	5
DB04854	TEI	Febuxostat	5
DB00129	ORN	Ornithine	4
DB00415	AIC	Ampicillin	4
DB01033	PM6	Mercaptopurine	4
DB02377	GUN	Guanine	4

Most frequently bound compounds

PDB ligand	Name	Domains in contact
MTE	PHOSPHONIC ACIDMONO-(2-AMINO-5,6-DIMERCAPTO-4-OXO-3,7,8A,9,10,10A-HEXAHYDRO-4H-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-7-YLMETHYL)ESTER	164
FES	FE2/S2 (INORGANIC) CLUSTER	159
MOS	DIOXOTHIOMOLYBDENUM(VI) ION	134
CAmetal	CALCIUM ION	72
MCN	PTERIN CYTOSINE DINUCLEOTIDE	46
URC	URIC ACID	46
PCD	(MOLYBDOPTERIN-CYTOSINE DINUCLEOTIDE-S,S)-DIOXO-AQUA-MOLYBDENUM(V)	36
SAL	2-HYDROXYBENZOIC ACID	36
CL	CHLORIDE ION	33
MOM	HYDROXY(DIOXO)MOLYBDENUM	32
XAX	{[(5aR,8R,9aR)-2-amino-4-oxo-6,7-di(sulfanyl-kappaS)-3,5,5a,8,9a,10-hexahydro-4H-pyrano[3,2-g]pteridin-8-yl]methyl dihydrogenato(2-) phosphate}(hydroxy)oxo(thioxo)molybdenum	24
HPA	HYPOXANTHINE	20
NAmetal	SODIUM ION	19
141	Oxypurinol	16
XAN	XANTHINE	16
MGmetal	MAGNESIUM ION	14
NAI	1,4-DIHYDRONICOTINAMIDE ADENINE DINUCLEOTIDE	12
AST	ARSENITE	8
BAmetal	BARIUM ION	8
CUM	CU(I)-S-MO(VI)(=O)OH CLUSTER	8