X-group (possible homology)

811 Cell cycle regulatory proteins

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Ligands and drugs

111

Member domains

with ligand contacts (≤ 4 Å)

14.4% of members

with DrugDomain annotations

15.3% of members

with a DrugBank compound

8.1% 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
Mixed metal/non-metal compounds	1	0.1	16×	not tested
Benzenoids	2	0.2	9.25×	not tested
Lipids and lipid-like molecules	1	0.3	3.04×	not tested
Homogeneous non-metal compounds	1	0.6	1.57×	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
DB02681	V7O	2,8-bis[oxido(oxo)vanadio]-1,1,1,3,5,5,7,7,9,9,9-undecaoxopentavanadoxane-2,8-diium	2

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CL	CHLORIDE ION	3
BEN	BENZAMIDINE	2
V7O	META VANADATE	2
CPS	3-[(3-CHOLAMIDOPROPYL)DIMETHYLAMMONIO]-1-PROPANESULFONATE	1
FB8	4-(2-methyl-3-propan-2-yl-imidazol-4-yl)-~{N}-(4-methylsulfonylphenyl)pyrimidin-2-amine	1