X-group (possible homology)

4035 N-terminal a+b domain in adenylylcyclase toxin

Open in classification tree →

Ligands and drugs

105

Member domains

with ligand contacts (≤ 4 Å)

81.9% of members

with DrugDomain annotations

64.8% of members

with a DrugBank compound

27.6% 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
Organoheterocyclic compounds	2	0.5	4.39×	not tested
Homogeneous non-metal compounds	2	0.6	3.14×	not tested
Nucleosides, nucleotides, and analogues	2	0.8	2.45×	not tested
Homogeneous metal compounds	3	1.5	2.07×	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
DB01860	3AT	Cordycepin Triphosphate	9
DB02527	CMP	Cyclic adenosine monophosphate	9
DB16833	ADP	Adenosine disphosphate	5
DB02596	APC	alpha,beta-Methyleneadenosine 5'-triphosphate	3

Most frequently bound compounds

PDB ligand	Name	Domains in contact
MGmetal	MAGNESIUM ION	57
3AT	3'-DEOXYADENOSINE-5'-TRIPHOSPHATE	17
YBmetal	YTTERBIUM (III) ION	15
POP	PYROPHOSPHATE 2-	10
CMP	ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE	9
MNmetal	MANGANESE (II) ION	8
GH3	3'-DEOXY-GUANOSINE-5'-TRIPHOSPHATE	5
CH1	3'-DEOXY-CYTIDINE-5'-TRIPHOSPHATE	4
EMA	(ADENIN-9-YL-ETHOXYMETHYL)-HYDROXYPHOSPHINYL-DIPHOSPHATE	4
APC	DIPHOSPHOMETHYLPHOSPHONIC ACID ADENOSYL ESTER	3
LAB	LATRUNCULIN B	3
PEO	HYDROGEN PEROXIDE	3
DOT	3'ANTHRANILOYL-2'-DEOXY-ADENOSINE-5'-TRIPHOSPHATE	2
AZI	AZIDE ION	1
CL	CHLORIDE ION	1
NImetal	NICKEL (II) ION	1