X-group (possible homology)

273 PR-1-like

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Ligands and drugs

814

Member domains

with ligand contacts (≤ 4 Å)

6.3% of members

with DrugDomain annotations

6.3% of members

with a DrugBank compound

3.4% 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	Ratio	Significance
Homogeneous metal compounds	7	5.8	1.21×	q = 0.65
Organometallic compounds	1	0.0	59×	not tested
Organic oxygen compounds	4	2.4	1.70×	not tested
Lipids and lipid-like molecules	1	1.3	0.76×	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
DB00141	NAG	N-Acetylglucosamine	5
DB04473	FUC	alpha-L-fucose	4
DB03796	PLM	Palmitic Acid	2
DB14981	IHP	Phytic acid	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
NAmetal	SODIUM ION	12
ZNmetal	ZINC ION	9
SEY	selenourea	7
NAG	2-acetamido-2-deoxy-beta-D-glucopyranose	2
PRmetal	PRASEODYMIUM ION	2
CAmetal	CALCIUM ION	1
CDmetal	CADMIUM ION	1
CL	CHLORIDE ION	1
COmetal	COBALT (II) ION	1
CUmetal	COPPER (II) ION	1
EAH	(5S,7E,9E,11Z,14Z)-5-hydroxyicosa-7,9,11,14-tetraenoic acid	1
FUC	alpha-L-fucopyranose	1
IHP	INOSITOL HEXAKISPHOSPHATE	1
MGmetal	MAGNESIUM ION	1
MNmetal	MANGANESE (II) ION	1
NImetal	NICKEL (II) ION	1
PLM	PALMITIC ACID	1