X-group (possible homology)

6033 FXYD family

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Ligands and drugs

118

Member domains

with ligand contacts (≤ 4 Å)

64.4% of members

with DrugDomain annotations

50.8% of members

with a DrugBank compound

48.3% 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
Lipids and lipid-like molecules	4	0.4		9.11×	not tested
Organic oxygen compounds	1	0.8		1.27×	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
DB04540	CLR	Cholesterol	45
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	39
DB18573	17F	1,2-Dioleoyl-sn-glycero-3-phospho-L-serine	4

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CLR	CHOLESTEROL	72
PCW	1,2-DIOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE	53
PC1	1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE	7
17F	O-[(S)-({(2R)-2,3-bis[(9Z)-octadec-9-enoyloxy]propyl}oxy)(hydroxy)phosphoryl]-L-serine	4
DMU	DECYL-BETA-D-MALTOPYRANOSIDE	3
Y01	CHOLESTEROL HEMISUCCINATE	3
1AT	beta-D-fructofuranosyl 6-O-decanoyl-alpha-D-glucopyranoside	2
1DS	1-O-decanoyl-beta-D-tagatofuranosyl beta-D-allopyranoside	2
CE1	O-DODECANYL OCTAETHYLENE GLYCOL	2