X-group (possible homology)

628 Fatty acid responsive transcription factor FadR, C-terminal domain

Open in classification tree →

Ligands and drugs

329

Member domains

with ligand contacts (≤ 4 Å)

17.3% of members

with DrugDomain annotations

13.7% of members

with a DrugBank compound

7.9% 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 metal compounds	11	6.3	1.75×	q = 0.02
Lipids and lipid-like molecules	3	1.4	2.10×	not tested
Homogeneous non-metal compounds	3	2.8	1.09×	not tested
Organic acids and derivatives	1	2.0	0.50×	not tested
Organic oxygen compounds	1	2.6	0.39×	not tested
Nucleosides, nucleotides, and analogues	1	3.5	0.28×	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	1
DB04072	MIC	Alpha-Methylisocitric Acid	1
DB04265	SLB	N-acetyl-beta-neuraminic acid	1
DB08231	MYR	Myristic acid	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
ZNmetal	ZINC ION	37
CL	CHLORIDE ION	4
NImetal	NICKEL (II) ION	4
2HG	(2R)-2-hydroxypentanedioic acid	2
3VV	S-{(3R,5R,9R)-1-[(2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-4-hydroxy-3-(phosphonooxy)tetrahydrofuran-2-yl]-3,5,9-trihydroxy-8,8-dimethyl-3,5-dioxido-10,14-dioxo-2,4,6-trioxa-11,15-diaza-3lambda~5~,5lambda~5~-diphosphaheptadecan-17-yl} (9Z)-octadec-9-enethioate (non-preferred name)	2
AUmetal	GOLD ION	2
P4K	polyethylene glycol	2
PKZ	Palmitoyl-CoA	2
BR	BROMIDE ION	1
COA	COENZYME A	1
MIC	ALPHA-METHYLISOCITRIC ACID	1
MYR	MYRISTIC ACID	1
SLB	N-acetyl-beta-neuraminic acid	1