X-group (possible homology)

7590 Middle domain in Argonaute homologs

Ligands and drugs

748
Member domains
196
with ligand contacts (≤ 4 Å)
26.2% of members
129
with DrugDomain annotations
17.2% of members
67
with a DrugBank compound
9.0% 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.

12
Proteins with classified ligands
7
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 compounds95.81.55×q = 0.13
Organosulfur compounds10.24.11×not tested
Benzenoids10.91.16×not tested
Organoheterocyclic compounds21.81.10×not tested
Homogeneous non-metal compounds22.60.79×not tested
Nucleosides, nucleotides, and analogues23.30.61×not tested
Organic acids and derivatives11.80.55×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
DB03255IPHPhenol11
DB00131AMPAdenosine phosphate4
DB03403C5PCytidine-5'-Monophosphate4
DB03685U5PUridine monophosphate4
DB00171ATPATP3
DB019725GPGuanosine-5'-Monophosphate3
DB033498BR8-Bromo-Adenosine-5'-Monophosphate3
DB03958GTG7-methyl-guanosine-5'-triphosphate-5'-guanosine3
DB00145GLYGlycine2
DB00150TRPTryptophan2
DB03345BMEMercaptoethanol1

Most frequently bound compounds

PDB ligandNameDomains in contact
MGmetalMAGNESIUM ION99
IPHPHENOL11
MNmetalMANGANESE (II) ION10
AMPADENOSINE MONOPHOSPHATE4
BMEBETA-MERCAPTOETHANOL4
C5PCYTIDINE-5'-MONOPHOSPHATE4
CAmetalCALCIUM ION4
CLCHLORIDE ION4
G6C5-oxidanyl-1H-pyridin-2-one4
U5PURIDINE-5'-MONOPHOSPHATE4
5GPGUANOSINE-5'-MONOPHOSPHATE3
8BR8-BROMO-ADENOSINE-5'-MONOPHOSPHATE3
A1ANT[(3~{S},4~{R},5~{R})-5-[5-methyl-2,4-bis(oxidanylidene)pyrimidin-1-yl]-4-oxidanyl-oxolan-3-yl] [oxidanyl(phosphonooxy)phosphoryl] hydrogen phosphate3
ATPADENOSINE-5'-TRIPHOSPHATE3
GTG7-METHYL-GUANOSINE-5'-TRIPHOSPHATE-5'-GUANOSINE3
KmetalPOTASSIUM ION3
K2R3-[3-[9-[(2R,3R,4S,5R)-3,4-bis(oxidanyl)-5-(phosphonooxymethyl)oxolan-2-yl]purin-6-yl]phenyl]propanoic acid3
UURIDINE-5'-MONOPHOSPHATE3
UTPURIDINE 5'-TRIPHOSPHATE3
D6O(~{Z})-4-formamido-4-oxidanylidene-but-2-enoic acid2