X-group (possible homology)

224 Gelsolin-like

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Ligands and drugs

1,930

Member domains

269

with ligand contacts (≤ 4 Å)

13.9% of members

187

with DrugDomain annotations

9.7% of members

with a DrugBank compound

4.9% 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)

5.0

Superclasses per 20 proteins

narrower than 83% of the 256 X-groups with enough proteins to compare (median 7.6)

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	17	9.7	1.76×	q = 2.7e-3
Nucleosides, nucleotides, and analogues	6	5.5	1.10×	q = 0.86
Organosulfur compounds	2	0.4	4.93×	not tested
Homogeneous non-metal compounds	3	4.2	0.71×	not tested
Organic oxygen compounds	2	3.9	0.51×	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
DB02082	GNP	Phosphoaminophosphonic acid guanylate ester	10
DB00171	ATP	ATP	9
DB09130	—	—	7
DB01593	—	—	6
DB02621	—	Latrunculin A	6
DB14487	—	—	6
DB03345	BME	Mercaptoethanol	5
DB04147	—	Dodecyldimethylamine N-oxide	2
DB01694	TAR	D-tartaric acid	1
DB02930	AGS	Adenosine 5'-[gamma-thio]triphosphate	1
DB11638	—	—	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CAmetal	CALCIUM ION	193
CL	CHLORIDE ION	14
GNP	PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER	10
ATP	ADENOSINE-5'-TRIPHOSPHATE	9
SCN	THIOCYANATE ION	9
BME	BETA-MERCAPTOETHANOL	5
NAmetal	SODIUM ION	4
MGmetal	MAGNESIUM ION	3
ANP	PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER	2
CDmetal	CADMIUM ION	2
EU3metal	EUROPIUM (III) ION	2
NImetal	NICKEL (II) ION	2
AGS	PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER	1
CY9	(3S,3aR,4S,6S,6aR,7E,10S,12R,13E,15R,15aR)-3-benzyl-6,12-dihydroxy-4,10,12-trimethyl-5-methylidene-1,11-dioxo-2,3,3a,4,5,6,6a,9,10,11,12,15-dodecahydro-1H-cycloundeca[d]isoindol-15-yl acetate	1
PG0	2-(2-METHOXYETHOXY)ETHANOL	1
TAR	D(-)-TARTARIC ACID	1
ZNmetal	ZINC ION	1