X-group (possible homology)

290 Sortase

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Ligands and drugs

175

Member domains

with ligand contacts (≤ 4 Å)

48.6% of members

with DrugDomain annotations

46.3% of members

with a DrugBank compound

25.7% 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	8	7.3	1.10×	q = 0.86
Organic nitrogen compounds	2	0.5	4.24×	not tested
Homogeneous non-metal compounds	5	3.2	1.57×	not tested
Organic acids and derivatives	3	2.3	1.31×	not tested
Organoheterocyclic compounds	2	2.3	0.88×	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
DB01803	ETM	2-(Trimethylammonium)Ethyl Thiol	8
DB00145	GLY	Glycine	1
DB00160	ALA	Alanine	1
DB04276	E64	4-[[(2S)-2-[[(2S)-3-Carboxy-2-hydroxypropanoyl]amino]-4-methylpentanoyl]amino]butyl-(diaminomethylidene)azanium	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
ZNmetal	ZINC ION	21
CL	CHLORIDE ION	10
ETM	2-(TRIMETHYLAMMONIUM)ETHYL THIOL	8
CAmetal	CALCIUM ION	5
MGmetal	MAGNESIUM ION	4
5TI	5-[3-(4-methoxyphenyl)prop-2-enylidene]-1,3-diazinane-2,4,6-trione	2
A1EEN	[4-[[2,4,6-tris(oxidanylidene)-1,3-diazinan-5-ylidene]methyl]phenyl] (2~{S})-4-methyl-2-(phenylmethoxycarbonylamino)pentanoate	2
NAmetal	SODIUM ION	2
2W7	N-{2-oxo-2-[(3s,5s,7s)-tricyclo[3.3.1.1~3,7~]dec-1-ylamino]ethyl}-2-sulfanylbenzamide	1
ALA	ALANINE	1
E64	N-[N-[1-HYDROXYCARBOXYETHYL-CARBONYL]LEUCYLAMINO-BUTYL]-GUANIDINE	1
GLY	GLYCINE	1
JPT	6-(hydroxymethyl)-3-oxidanyl-2-(thiophen-3-ylmethyl)pyran-4-one	1
NImetal	NICKEL (II) ION	1