X-group (possible homology)

7552 Amidase signature (AS) enzymes

Ligands and drugs

1,135
Member domains
160
with ligand contacts (≤ 4 Å)
14.1% of members
138
with DrugDomain annotations
12.2% of members
85
with a DrugBank compound
7.5% 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.

13
Proteins with classified ligands
8
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
Homogeneous metal compounds36.30.48×q = 0.14
Benzenoids30.93.20×not tested
Organic acids and derivatives62.03.02×not tested
Organic nitrogen compounds10.42.45×not tested
Lipids and lipid-like molecules21.41.40×not tested
Organic oxygen compounds22.60.78×not tested
Homogeneous non-metal compounds22.80.72×not tested
Organoheterocyclic compounds12.00.51×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
DB00174ASNAsparagine17
DB02465MAYMethoxy arachidonyl fluorophosphonate17
DB00130GLNL-Glutamine10
DB02175MLAMalonic acid6
DB08400PIX4-(3-{[5-(trifluoromethyl)pyridin-2-yl]oxy}benzyl)piperidine-1-carboxylic acid5
DB01694TARD-tartaric acid3
DB068941DO1-Dodecanol3
DB08385PF74-(quinolin-3-ylmethyl)piperidine-1-carboxylic acid3
DB02649MLM3-Amino-3-Oxopropanoic Acid2
DB00316TYLAcetaminophen1
DB00513ACAAminocaproic acid1
DB00599——1
DB02219CXS3-(cyclohexylamino)propanesulfonic acid1
DB12010—Fostamatinib1
DB14011——1

Most frequently bound compounds

PDB ligandNameDomains in contact
CLCHLORIDE ION28
ASNASPARAGINE17
MAYMETHYL ARACHIDONYL FLUOROPHOSPHONATE16
GJYmethyl-9Z,12Z,15Z-octadecatrienylphosphonofluoridate12
GLNGLUTAMINE10
MLAMALONIC ACID6
X4X(9R,10E,12Z)-9-hydroxy-N-(2-hydroxyethyl)octadeca-10,12-dienamide6
OHNN-3-OXO-DODECANOYL-L-HOMOSERINE LACTONE5
A1D5H4-oxidanylbutyl ~{N}-(4-aminophenyl)carbamate4
HDH4-oxidanylbenzohydrazide4
JXV(1R)-2-{[6-(2,3-dihydro-1,4-benzodioxin-6-yl)pyrimidin-4-yl]amino}-1-phenylethan-1-ol4
OHOCYCLOHEXANE AMINOCARBOXYLIC ACID4
PIX4-(3-{[5-(trifluoromethyl)pyridin-2-yl]oxy}benzyl)piperidine-1-carboxylic acid4
PMSphenylmethanesulfonic acid4
NAmetalSODIUM ION3
TARD(-)-TARTARIC ACID3
0LA(2S)-2-(6-chloro-9H-carbazol-2-yl)propanoic acid2
17J4-(3-phenyl-1,2,4-thiadiazol-5-yl)-N-(pyridin-3-yl)piperazine-1-carboxamide2
1DO1-DODECANOL2
A1IHK4-[(4-aminophenyl)methyl]aniline2