X-group (possible homology)

4033 Acyl-CoA dehydrogenase N-terminal domain-like

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Ligands and drugs

1,559

Member domains

445

with ligand contacts (≤ 4 Å)

28.5% of members

456

with DrugDomain annotations

29.2% of members

388

with a DrugBank compound

24.9% 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)

7.4

Superclasses per 20 proteins

narrower than 55% 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	72	22.4	3.22×	q < 0.0001
Lipids and lipid-like molecules	16	9.0	1.78×	q = 0.04
Homogeneous non-metal compounds	9	17.4	0.52×	q = 0.04
Benzenoids	3	5.9	0.51×	q = 0.36
Organic oxygen compounds	6	16.1	0.37×	q = 6.8e-3
Organoheterocyclic compounds	4	12.4	0.32×	q = 0.01
Organic acids and derivatives	3	12.5	0.24×	q = 4.0e-3
Homogeneous metal compounds	7	39.7	0.18×	q < 0.0001
Organic 1,3-dipolar compounds	1	0.1	15×	not tested
Organic nitrogen compounds	4	2.6	1.55×	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
DB03147	FAD	Flavin adenine dinucleotide	289
DB03247	FMN	Flavin mononucleotide	34
DB03059	CAA	Acetoacetyl-CoA	9
DB04036	COS	Coenzyme A persulfide	9
DB04532	IND	Indole	7
DB02910	CO8	Octanoyl-Coenzyme A	6
DB03103	TYD	Thymidine-5'- Diphosphate	5
DB03415	CS8	3-thiaoctanoyl-CoA	5
DB00127	SPM	Spermine	4
DB02078	PG5	Triglyme	4
DB03796	PLM	Palmitic Acid	4
DB01675	2MC	Methacrylyl-Coenzyme A	2
DB03017	DAO	Lauric acid	2
DB03600	DKA	Capric acid	2
DB04519	OCA	Caprylic acid	2
DB07930	HXD	(3R)-3-HYDROXYDODECANOIC ACID	2
DB08231	MYR	Myristic acid	2
DB00139	SIN	Succinic acid	1
DB00157	—	NADH	1
DB00167	—	Isoleucine	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
FAD	FLAVIN-ADENINE DINUCLEOTIDE	194
FMN	FLAVIN MONONUCLEOTIDE	34
CL	CHLORIDE ION	31
FDA	DIHYDROFLAVINE-ADENINE DINUCLEOTIDE	20
CO8	OCTANOYL-COENZYME A	10
DAO	LAURIC ACID	10
N6C	1-nitrohexane	8
SF4	IRON/SULFUR CLUSTER	8
IND	INDOLE	7
4HP	4-HYDROXYPHENYLACETATE	6
CAA	ACETOACETYL-COENZYME A	6
IOD	IODIDE ION	6
CAmetal	CALCIUM ION	5
TYD	THYMIDINE-5'-DIPHOSPHATE	5
UNX	UNKNOWN ATOM OR ION	5
4KW	1-monoenoyl-CoA	4
83U	dibenzothiophene 5-oxide	4
CNX	heptanenitrile	4
CS8	3-THIAOCTANOYL-COENZYME A	4
GRA	glutaryl-coenzyme A	4