X-group (possible homology)

7527 SurE-like/CoA-transferase family III (CaiB/BaiF)

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Ligands and drugs

952

Member domains

202

with ligand contacts (≤ 4 Å)

21.2% of members

173

with DrugDomain annotations

18.2% of members

144

with a DrugBank compound

15.1% 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	6	6.3	0.95×	q = 1.00
Mixed metal/non-metal compounds	2	0.3	7.43×	not tested
Lipids and lipid-like molecules	4	1.4	2.80×	not tested
Organic nitrogen compounds	1	0.4	2.45×	not tested
Nucleosides, nucleotides, and analogues	7	3.5	1.98×	not tested
Homogeneous non-metal compounds	4	2.8	1.45×	not tested
Benzenoids	1	0.9	1.07×	not tested
Organic acids and derivatives	2	2.0	1.01×	not tested
Organoheterocyclic compounds	1	2.0	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
DB01992	COA	Coenzyme A	29
DB00173	ADE	Adenine	4
DB00640	ADN	Adenosine	4
DB01846	CAO	Oxidized coenzyme A	4
DB03059	CAA	Acetoacetyl-CoA	4
DB03902	OXD	Oxalic Acid	2
DB00134	MET	Methionine	1
DB02516	CCQ	(R)-carnitinyl-CoA betaine	1
DB03309	NHE	N-cyclohexyltaurine	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
MGmetal	MAGNESIUM ION	42
COA	COENZYME A	32
MNmetal	MANGANESE (II) ION	20
CL	CHLORIDE ION	16
IOD	IODIDE ION	12
ACO	ACETYL COENZYME *A	10
MEZ	(2E)-2-METHYLBUT-2-ENEDIOIC ACID	6
WO4	TUNGSTATE(VI)ION	6
CAmetal	CALCIUM ION	5
SIN	SUCCINIC ACID	5
A1ATL	losartan carboxylic acid	4
ADN	ADENOSINE	4
CAA	ACETOACETYL-COENZYME A	4
CAO	OXIDIZED COENZYME A	4
MC4	2-METHYLACETOACETYL COA	4
MRR	(R)-2-METHYLMYRISTOYL-COENZYME A	4
MRS	(S)-2-METHYLMYRISTOYL-COENZYME A	4
NAmetal	SODIUM ION	4
RFC	(R)-IBUPROFENOYL-COENZYME A	4
SFC	(S)-IBUPROFENOYL-COENZYME A	4