X-group (possible homology)

302 Reverse ferredoxin

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Ligands and drugs

1,826

Member domains

223

with ligand contacts (≤ 4 Å)

12.2% of members

205

with DrugDomain annotations

11.2% of members

with a DrugBank compound

2.7% 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	10	6.3	1.59×	q = 0.08
Mixed metal/non-metal compounds	3	0.3	11×	not tested
Organosulfur compounds	1	0.3	3.79×	not tested
Phenylpropanoids and polyketides	1	0.3	3.75×	not tested
Benzenoids	2	0.9	2.13×	not tested
Homogeneous non-metal compounds	3	2.8	1.09×	not tested
Organic acids and derivatives	1	2.0	0.50×	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
DB07435	BAP	1,2,3-TRIHYDROXY-1,2,3,4-TETRAHYDROBENZO[A]PYRENE	6
DB00515	CPT	Cisplatin	4
DB04457	DG	2'-Deoxyguanosine-5'-Monophosphate	2
DB00145	GLY	Glycine	1
DB07652	—	—	1
DB08237	—	—	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CAmetal	CALCIUM ION	15
MGmetal	MAGNESIUM ION	8
AF	2-AMINOFLUORENE	6
CL	CHLORIDE ION	6
BAP	1,2,3-TRIHYDROXY-1,2,3,4-TETRAHYDROBENZO[A]PYRENE	5
NAG	2-acetamido-2-deoxy-beta-D-glucopyranose	4
NImetal	NICKEL (II) ION	4
ANP	PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER	3
COmetal	COBALT (II) ION	3
IOD	IODIDE ION	2
Kmetal	POTASSIUM ION	2
NAmetal	SODIUM ION	2
GLY	GLYCINE	1
SCN	THIOCYANATE ION	1