X-group (possible homology)

5058 Mechanosensitive channel protein MscS (YggB), transmembrane region

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Ligands and drugs

656

Member domains

with ligand contacts (≤ 4 Å)

14.0% of members

with DrugDomain annotations

12.7% of members

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.

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	3	0.1		62×	not tested
Lipids and lipid-like molecules	5	0.8		6.51×	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

DrugBank	PDB ligand	Name	Domains
DB04327	PEE	Phosphatidylethanolamine	28
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	21

Most frequently bound compounds

PDB ligand	Name	Domains in contact
PEE	1,2-dioleoyl-sn-glycero-3-phosphoethanolamine	29
PCW	1,2-DIOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE	21
AV0	Lauryl Maltose Neopentyl Glycol	14
D12	DODECANE	7
HEX	HEXANE	7
LFA	EICOSANE	7
POV	(2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate	7
QGD	O-{(R)-hydroxy[(2R)-3-(icosyloxy)-2-(tetradecanoyloxy)propoxy]phosphoryl}-L-serine	7
R16	HEXADECANE	7
D10	DECANE	3
D21	(2R)-1-(hexadecanoyloxy)-3-(phosphonooxy)propan-2-yl (9Z)-octadec-9-enoate	1