X-group (possible homology)

6074 Transmembrane helix of E1 envelope glycoprotein

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Ligands and drugs

452

Member domains

with ligand contacts (≤ 4 Å)

2.9% of members

with DrugDomain annotations

1.1% of members

with a DrugBank compound

0.9% 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.

Proteins with classified ligands

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.

Superclass	Proteins	Expected	0.25×observed / expected4×	Ratio	Significance
Hydrocarbons	1	0.0		73×	not tested
Lipids and lipid-like molecules	1	0.2		4.55×	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

DrugBank	PDB ligand	Name	Domains
DB03193	STE	Stearic acid	4
DB03690	PCW	(Z,Z)-4-Hydroxy-N,N,N-Trimethyl-10-Oxo-7-[(1-Oxo-9-Octadecenyl)Oxy]-3,5,9-Trioxa-4-Phosphaheptacos-18-En-1-Aminium-4-Oxide	4
DB03796	PLM	Palmitic Acid	4
DB04540	CLR	Cholesterol	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CLR	CHOLESTEROL	8
PCW	1,2-DIOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE	8
PLM	PALMITIC ACID	4
STE	STEARIC ACID	4
8K6	Octadecane	1