X-group (possible homology)

7542 Aconitase iron-sulfur domain

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Ligands and drugs

2,763

Member domains

with ligand contacts (≤ 4 Å)

1.7% of members

with DrugDomain annotations

2.0% of members

with a DrugBank compound

1.0% 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
Organic acids and derivatives	3	0.8	3.93×	not tested
Homogeneous non-metal compounds	2	1.1	1.89×	not tested
Lipids and lipid-like molecules	1	0.6	1.82×	not tested
Organic oxygen compounds	1	1.0	1.02×	not tested
Homogeneous metal compounds	2	2.4	0.83×	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
DB04351	TRA	Aconitate Ion	9
DB04562	TRC	Tricarballylic acid	7
DB03964	—	4-Hydroxy-Aconitate Ion	5
DB04072	—	Alpha-Methylisocitric Acid	5
DB01727	—	Isocitric Acid	3
DB14522	OH	Hydroxide ion	2
DB00142	—	Glutamic acid	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
SF4	IRON/SULFUR CLUSTER	34
F3S	FE3-S4 CLUSTER	6
ICT	ISOCITRIC ACID	6
TRA	ACONITATE ION	6
O	OXYGEN ATOM	4
TRC	TRICARBALLYLIC ACID	4
MGmetal	MAGNESIUM ION	3
ZNmetal	ZINC ION	3
ATH	4-HYDROXY-ACONITATE ION	2
MIC	ALPHA-METHYLISOCITRIC ACID	2
NIC	NITROISOCITRIC ACID	2
NTC	2-HYDROXY-2-NITROMETHYL SUCCINIC ACID	2
KP1	2,4-dimethylpentane-2,4-diol	1
OH	HYDROXIDE ION	1