X-group (possible homology)

236 GroES-like

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Ligands and drugs

4,420

Member domains

1,177

with ligand contacts (≤ 4 Å)

26.6% of members

1,070

with DrugDomain annotations

24.2% of members

862

with a DrugBank compound

19.5% 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.

143

Proteins with classified ligands

Superclasses bound (of 23)

8.3

Superclasses per 20 proteins

broader than 61% 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	103	39.0	2.64×	q < 0.0001
Homogeneous metal compounds	101	69.2	1.46×	q < 0.0001
Lipids and lipid-like molecules	12	15.7	0.76×	q = 0.50
Benzenoids	7	10.3	0.68×	q = 0.41
Homogeneous non-metal compounds	20	30.4	0.66×	q = 0.05
Organic oxygen compounds	12	28.1	0.43×	q = 8.4e-4
Organoheterocyclic compounds	9	21.7	0.41×	q = 3.6e-3
Organic acids and derivatives	9	21.8	0.41×	q = 3.6e-3
Organohalogen compounds	6	0.4	15×	not tested
Alkaloids and derivatives	1	0.5	2.08×	not tested
Organic nitrogen compounds	2	4.5	0.45×	not tested
Organosulfur compounds	1	2.9	0.34×	not tested
Phenylpropanoids and polyketides	1	2.9	0.34×	not tested
Mixed metal/non-metal compounds	1	3.0	0.34×	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
DB14128	NAD	Nadide	375
DB03461	NAP	Nicotinamide adenine dinucleotide phosphate	181
DB00157	NAI	NADH	72
DB02338	NDP	NADPH	71
DB01711	PFB	2,3,4,5,6-Pentafluorobenzyl Alcohol	52
DB03226	ETF	Trifluoroethanol	46
DB03559	CXF	Cyclohexylformamide	35
DB16856	FU2	Furfural	17
DB02721	PYZ	4-Iodopyrazole	11
DB02379	BGC	Beta-D-Glucose	9
DB02871	SSB	3-Butylthiolane 1-Oxide	9
DB04349	PGO	(S)-propane-1,2-diol	8
DB02757	PZO	Pyrazole	7
DB02822	BRB	Para-Bromobenzyl Alcohol	7
DB04312	DFB	2,3-Difluorobenzyl Alcohol	7
DB16858	VES	Pyrrolidine	7
DB02481	BNF	N-Benzylformamide	6
DB03061	NWH	(R)-N-(1-Methyl-Hexyl)-Formamide	5
DB04113	FPI	N-Formylpiperidine	5
DB02121	BMD	Butyramide	4

Most frequently bound compounds

PDB ligand	Name	Domains in contact
ZNmetal	ZINC ION	848
NAD	NICOTINAMIDE-ADENINE-DINUCLEOTIDE	297
NAP	NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE	211
NAJ	NICOTINAMIDE-ADENINE-DINUCLEOTIDE (ACIDIC FORM)	86
NDP	NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE	78
MRD	(4R)-2-METHYLPENTANE-2,4-DIOL	76
CL	CHLORIDE ION	72
NAI	1,4-DIHYDRONICOTINAMIDE ADENINE DINUCLEOTIDE	59
PFB	2,3,4,5,6-PENTAFLUOROBENZYL ALCOHOL	52
ETF	TRIFLUOROETHANOL	48
CXF	CYCLOHEXYLFORMAMIDE	34
MGmetal	MAGNESIUM ION	25
KZH	(13-oxo-9(Z),11(E),15(Z)-octadecatrienoic acid)	20
FU2	FURFURAL	17
Kmetal	POTASSIUM ION	17
CDmetal	CADMIUM ION	12
NAmetal	SODIUM ION	12
W46	1-{[4-(hydroxymethyl)phenyl]methyl}-1,4-dihydropyridine-3-carboxamide	11
COmetal	COBALT (II) ION	10
IMN	INDOMETHACIN	10