X-group (possible homology)

3110 STT3/PglB/AglB core domain

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Ligands and drugs

418

Member domains

with ligand contacts (≤ 4 Å)

5.7% of members

with DrugDomain annotations

6.9% of members

with a DrugBank compound

1.9% 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)

—

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 non-metal compounds	3	1.9	1.57×	not tested
Organoheterocyclic compounds	2	1.4	1.47×	not tested
Homogeneous metal compounds	6	4.4	1.38×	not tested
Organic oxygen compounds	2	1.8	1.13×	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

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CAmetal	CALCIUM ION	13
CL	CHLORIDE ION	7
323	2-[3,6-bis(dimethylamino)xanthen-9-yl]-5-methanoyl-benzoate	2
MNmetal	MANGANESE (II) ION	2
7E8	(2R)-2,3-DIHYDROXYPROPYL (7Z)-TETRADEC-7-ENOATE	1
9UB	[(2~{S},3~{R},4~{R},5~{S},6~{R})-3-acetamido-6-(hydroxymethyl)-4,5-bis(oxidanyl)oxan-2-yl]methyl-[oxidanyl-[(2~{Z},6~{Z},10~{Z})-3,7,11,15-tetramethylhexadeca-2,6,10,14-tetraenoxy]phosphoryl]oxy-phosphinic acid	1
FFK	[(2~{R},3~{R},4~{R},5~{S},6~{R})-3-acetamido-6-(hydroxymethyl)-4,5-bis(oxidanyl)oxan-2-yl] [oxidanyl-[(2~{Z},6~{Z},10~{Z})-3,7,11,15-tetramethylhexadeca-2,6,10,14-tetraenoxy]phosphoryl] hydrogen phosphate	1
MGmetal	MAGNESIUM ION	1
NAG	2-acetamido-2-deoxy-beta-D-glucopyranose	1
ZXT	5-(dimethylsulfamoyl)-~{N}-(5-methyl-1,3-thiazol-2-yl)-2-pyrrolidin-1-yl-benzamide	1