X-group (possible homology)

222 Thioesterase/thiol ester dehydrase-isomerase-like

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Ligands and drugs

4,736

Member domains

963

with ligand contacts (≤ 4 Å)

20.3% of members

929

with DrugDomain annotations

19.6% of members

604

with a DrugBank compound

12.8% 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)

8.6

Superclasses per 20 proteins

broader than 69% 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	26	10.4	2.49×	q < 0.0001
Homogeneous non-metal compounds	37	20.2	1.83×	q = 2.4e-4
Nucleosides, nucleotides, and analogues	25	25.9	0.97×	q = 0.94
Organic oxygen compounds	14	18.7	0.75×	q = 0.37
Benzenoids	5	6.9	0.73×	q = 0.76
Organic acids and derivatives	9	14.5	0.62×	q = 0.21
Homogeneous metal compounds	21	46.0	0.46×	q < 0.0001
Organoheterocyclic compounds	5	14.4	0.35×	q = 8.3e-3
Organosulfur compounds	4	1.9	2.08×	not tested
Phenylpropanoids and polyketides	3	2.0	1.54×	not tested
Organic nitrogen 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
DB01992	COA	Coenzyme A	150
DB04315	GDP	Guanosine-5'-Diphosphate	22
DB03613	4CO	4-hydroxyphenacyl coenzyme A	19
DB02912	1VU	Propanoyl-CoA	12
DB04524	MLC	Malonyl-CoA	12
DB02563	HXC	Hexanoyl-CoA	11
DB08688	UOC	2-Undecanone	8
DB02910	CO8	Octanoyl-Coenzyme A	6
DB03192	HDC	(R)-3-hydroxydecanoyl-CoA	6
DB04242	PHB	4-hydroxybenzoic acid	6
DB03796	PLM	Palmitic Acid	5
DB01694	TAR	D-tartaric acid	4
DB04216	QUE	Quercetin	4
DB06950	2BE	4-chloro-N'-[(1E)-(3,5-dibromo-2,4-dihydroxyphenyl)methylidene]benzohydrazide	4
DB06978	2RB	N'-[(1E)-(3,5-dibromo-2,4-dihydroxyphenyl)methylidene]-4-methoxybenzohydrazide	4
DB07044	3BE	3-bromo-N'-[(1E)-(3,5-dibromo-2,4-dihydroxyphenyl)methylidene]benzohydrazide	4
DB07097	4BB	4-tert-butyl-N'-[(1E)-(3,5-dibromo-2,4-dihydroxyphenyl)methylidene]benzohydrazide	4
DB07098	4BE	4-bromo-N'-[(1E)-(3,5-dibromo-2,4-dihydroxyphenyl)methylidene]benzohydrazide	4
DB07352	AGI	Apigenin	4
DB07445	BDE	N'-[(1E)-(3,5-DIBROMO-2,4-DIHYDROXYPHENYL)METHYLENE]NICOTINOHYDRAZIDE	4

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CL	CHLORIDE ION	247
COA	COENZYME A	152
BEN	BENZAMIDINE	56
GDP	GUANOSINE-5'-DIPHOSPHATE	22
3MQ	(5-thiophen-2-ylisoxazol-3-yl)methanol	20
MGmetal	MAGNESIUM ION	20
4CO	4-HYDROXYPHENACYL COENZYME A	19
NAmetal	SODIUM ION	14
0FQ	phenacyl coenzyme A	13
1VU	propionyl Coenzyme A	12
FAH	fluoroacetic acid	12
IOD	IODIDE ION	12
KM0	8-(benzyloxy)-5-chloroquinoline	12
MLC	MALONYL-COENZYME A	12
CAmetal	CALCIUM ION	11
HXC	HEXANOYL-COENZYME A	11
K91	4-chloro-2-[(5-chloroquinolin-8-yl)oxy]phenol	10
P6G	HEXAETHYLENE GLYCOL	10
CDmetal	CADMIUM ION	9
CI7	3-[1-(4-bromophenyl)-3-(4-chlorophenyl)-1H-pyrazol-4-yl]-N-(methanesulfonyl)propanamide	8