X-group (possible homology)

541 Dimerization-anchoring domain of cAMP-dependent type II PK regulatory subunit

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Ligands and drugs

501

Member domains

with ligand contacts (≤ 4 Å)

5.8% of members

with DrugDomain annotations

6.4% of members

with a DrugBank compound

4.0% 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
Lipids and lipid-like molecules	1	0.4	2.28×	not tested
Organoheterocyclic compounds	1	0.6	1.65×	not tested
Organic oxygen compounds	1	0.8	1.27×	not tested
Homogeneous non-metal compounds	1	0.9	1.18×	not tested
Homogeneous metal compounds	2	1.9	1.03×	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
DB02184	DTV	D-1,4-dithiothreitol	3
DB02210	HEZ	Hexane-1,6-Diol	3
DB04447	DTT	1,4-Dithiothreitol	3
DB01692	DTU	Dithioerythritol	2
DB01822	DTD	(4R,5R)-1,2-dithiane-4,5-diol	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CDmetal	CADMIUM ION	10
DTT	2,3-DIHYDROXY-1,4-DITHIOBUTANE	3
HEZ	HEXANE-1,6-DIOL	3
CL	CHLORIDE ION	2
DTU	(2R,3S)-1,4-DIMERCAPTOBUTANE-2,3-DIOL	2
DTV	(2S,3S)-1,4-DIMERCAPTOBUTANE-2,3-DIOL	2
ZNmetal	ZINC ION	2
DTD	DITHIANE DIOL	1