X-group (possible homology)

3998 Peptidase inhibitors family I29

Ligands and drugs

371
Member domains
19
with ligand contacts (≤ 4 Å)
5.1% of members
20
with DrugDomain annotations
5.4% of members
17
with a DrugBank compound
4.6% 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.

6
Proteins with classified ligands
3
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.

SuperclassProteinsExpected
0.25×observed / expected4×
RatioSignificance
Organic oxygen compounds31.22.55×not tested
Homogeneous non-metal compounds21.31.57×not tested
Homogeneous metal compounds12.90.34×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

DrugBankPDB ligandNameDomains
DB00141NAGN-Acetylglucosamine3
DB02869——2
DB12010—Fostamatinib2
DB02580PG6Pentaglyme1
DB02679—Cyanamide1
DB03661—L-cysteic acid1
DB04451——1
DB06367——1
DB06670——1
DB07477—Felbinac1
DB08287—(1R,2R)-N-(2-Aminoethyl)-2-{[(4-methoxyphenyl)sulfonyl]methyl}cyclohexanecarboxamide1
DB12239——1

Most frequently bound compounds

PDB ligandNameDomains in contact
CLCHLORIDE ION2
MGmetalMAGNESIUM ION2
NAmetalSODIUM ION2
NAG2-acetamido-2-deoxy-beta-D-glucopyranose2
A0U~{tert}-butyl ~{N}-[iminomethyl-[2-[methyl-(phenylmethyl)amino]-2-oxidanylidene-ethyl]amino]carbamate1
BRBROMIDE ION1
PG61-(2-METHOXY-ETHOXY)-2-{2-[2-(2-METHOXY-ETHOXY]-ETHOXY}-ETHANE1
POLN-PROPANOL1