X-group (possible homology)

3740 F420-reducing hydrogenase subunit beta

Ligands and drugs

214
Member domains
56
with ligand contacts (≤ 4 Å)
26.2% of members
32
with DrugDomain annotations
15.0% of members
32
with a DrugBank compound
15.0% 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.

6
Proteins with classified ligands
5
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 nitrogen compounds10.25.30×not tested
Nucleosides, nucleotides, and analogues61.63.67×not tested
Homogeneous non-metal compounds21.31.57×not tested
Organic acids and derivatives10.91.09×not tested
Homogeneous metal compounds22.90.69×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
DB03147FADFlavin adenine dinucleotide32
DB02832SRMSiroheme3
DB03913F42Coenzyme F4201

Most frequently bound compounds

PDB ligandNameDomains in contact
SF4IRON/SULFUR CLUSTER56
FADFLAVIN-ADENINE DINUCLEOTIDE55
CLCHLORIDE ION20
CAmetalCALCIUM ION4
NAmetalSODIUM ION3
F42COENZYME F4201
FEmetalFE (III) ION1
KENN,N-dimethylmethanamine1