X-group (possible homology)

880 ADC synthase

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Ligands and drugs

322

Member domains

119

with ligand contacts (≤ 4 Å)

37.0% of members

with DrugDomain annotations

30.7% of members

with a DrugBank compound

24.2% 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	12	9.2	1.30×	q = 0.33
Nucleosides, nucleotides, and analogues	0	5.2	0	q = 7.4e-3
Benzenoids	7	1.4	5.11×	not tested
Organosulfur compounds	1	0.4	2.60×	not tested
Organoheterocyclic compounds	7	2.9	2.43×	not tested
Organic acids and derivatives	7	2.9	2.42×	not tested
Organic oxygen compounds	4	3.7	1.07×	not tested
Lipids and lipid-like molecules	1	2.1	0.48×	not tested
Homogeneous non-metal compounds	1	4.0	0.25×	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
DB00150	TRP	Tryptophan	16
DB00119	PYR	Pyruvic acid	11
DB02793	ISC	Isochorismic Acid	8
DB03793	BEZ	Benzoic acid	8
DB00139	SIN	Succinic acid	4
DB00936	SAL	Salicylic acid	4
DB00142	GLU	Glutamic acid	2
DB01694	TAR	D-tartaric acid	2
DB01692	DTU	Dithioerythritol	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
MGmetal	MAGNESIUM ION	46
TRP	TRYPTOPHAN	30
CL	CHLORIDE ION	13
PYR	PYRUVIC ACID	11
0GA	3-{[(1Z)-1-carboxyprop-1-en-1-yl]oxy}-2-hydroxybenzoic acid	9
ISJ	(3R,4R)-3-[(1-carboxyethenyl)oxy]-4-hydroxycyclohexa-1,5-diene-1-carboxylic acid	9
BEZ	BENZOIC ACID	8
ISC	(5S,6S)-5-[(1-carboxyethenyl)oxy]-6-hydroxycyclohexa-1,3-diene-1-carboxylic acid	8
SIN	SUCCINIC ACID	8
GLU	GLUTAMIC ACID	4
M83	5-(3-cyanophenyl)furan-2-carboxylic acid	4
RVB	3-{[(1Z)-1-carboxy-3-methylbut-1-en-1-yl]oxy}-2-hydroxybenzoic acid	4
RVC	3-{[(Z)-1-carboxy-2-cyclopropylethenyl]oxy}-2-hydroxybenzoic acid	4
RVD	3-{[(1Z)-1-carboxybut-1-en-1-yl]oxy}-2-hydroxybenzoic acid	4
SAL	2-HYDROXYBENZOIC ACID	4
15P	POLYETHYLENE GLYCOL (N=34)	3
Kmetal	POTASSIUM ION	3
SCN	THIOCYANATE ION	3
BAmetal	BARIUM ION	2
FEmetal	FE (III) ION	2