X-group (possible homology)

543 Frizzled cysteine-rich domain-related

Ligands and drugs

598
Member domains
149
with ligand contacts (≤ 4 Å)
24.9% of members
128
with DrugDomain annotations
21.4% of members
97
with a DrugBank compound
16.2% 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.

23
Proteins with classified ligands
7
Superclasses bound (of 23)
6.8
Superclasses per 20 proteins
narrower than 62% of the 256 X-groups with enough proteins to compare (median 7.6)

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
Homogeneous metal compounds511.10.45×q = 0.02
Nucleosides, nucleotides, and analogues06.30q = 3.3e-3
Lipids and lipid-like molecules112.54.36×not tested
Organic oxygen compounds174.53.77×not tested
Organic nitrogen compounds10.71.38×not tested
Homogeneous non-metal compounds64.91.23×not tested
Organoheterocyclic compounds23.50.57×not tested
Organic acids and derivatives23.50.57×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

DrugBankPDB ligandNameDomains
DB00141NAGN-Acetylglucosamine69
DB04257PAMPalmitoleic Acid12
DB00158FOLFolic acid10
DB04540CLRCholesterol6
DB00642LYAPemetrexed3
DB04038ERGErgosterol3
DB05168——3
DB00564N6WCarbamazepine2
DB020421PG2-(2-{2-[2-(2-Methoxy-Ethoxy)-Ethoxy]-Ethoxy}-Ethoxy)-Ethanol2
DB00563MTXMethotrexate1
DB00606—Cyclothiazide1
DB00790——1
DB00973—Ezetimibe1
DB01047——1
DB02219CXS3-(cyclohexylamino)propanesulfonic acid1
DB04705HC325-Hydroxycholesterol1
DB06786——1
DB0887804JAminopterin1
DB09143——1
DB11978——1

Most frequently bound compounds

PDB ligandNameDomains in contact
NAG2-acetamido-2-deoxy-beta-D-glucopyranose84
CLCHLORIDE ION25
CLRCHOLESTEROL16
PAMPALMITOLEIC ACID12
ZNmetalZINC ION11
KmetalPOTASSIUM ION10
CAmetalCALCIUM ION9
FOLFOLIC ACID9
83AN-(4-{[2-(2-amino-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-6-yl)ethyl]amino}benzene-1-carbonyl)-L-glutamic acid8
NAmetalSODIUM ION8
ERGERGOSTEROL7
CCNACETONITRILE4
CY8Cyclopamine3
LYA2-{4-[2-(2-AMINO-4-OXO-4,7-DIHYDRO-3H-PYRROLO[2,3-D]PYRIMIDIN-5-YL)-ETHYL]-BENZOYLAMINO}-PENTANEDIOIC ACID3
1PG2-(2-{2-[2-(2-METHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHANOL2
N6Wbenzo[b][1]benzazepine-11-carboxamide2
NER(15E)-TETRACOS-15-ENOIC ACID2
Y01CHOLESTEROL HEMISUCCINATE2
04JAminopterin1
CXS3-CYCLOHEXYL-1-PROPYLSULFONIC ACID1