X-group (possible homology)

605 ROP-like

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Ligands and drugs

2,302

Member domains

122

with ligand contacts (≤ 4 Å)

5.3% of members

101

with DrugDomain annotations

4.4% of members

with a DrugBank compound

2.6% 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	8.2	1.22×	q = 0.55
Mixed metal/non-metal compounds	1	0.4	2.84×	not tested
Nucleosides, nucleotides, and analogues	8	4.6	1.73×	not tested
Homogeneous non-metal compounds	2	3.6	0.55×	not tested
Organic oxygen compounds	1	3.3	0.30×	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
DB16833	ADP	Adenosine disphosphate	8
DB00171	ATP	ATP	5
DB03909	ACP	Adenosine-5'-[Beta, Gamma-Methylene]Triphosphate	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
ANP	PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER	11
COmetal	COBALT (II) ION	9
NImetal	NICKEL (II) ION	8
MGmetal	MAGNESIUM ION	7
CAmetal	CALCIUM ION	6
ACP	PHOSPHOMETHYLPHOSPHONIC ACID ADENYLATE ESTER	5
Kmetal	POTASSIUM ION	5
ATP	ADENOSINE-5'-TRIPHOSPHATE	4
CL	CHLORIDE ION	4
BEF	BERYLLIUM TRIFLUORIDE ION	3
GCH	GLYCOCHOLIC ACID	3
ADP	ADENOSINE-5'-DIPHOSPHATE	2
PG0	2-(2-METHOXYETHOXY)ETHANOL	2
ZNmetal	ZINC ION	2
AN2	AMP PHOSPHORAMIDATE	1
IHP	INOSITOL HEXAKISPHOSPHATE	1
NAmetal	SODIUM ION	1
PC4	TETRACHLOROPLATINATE(II)	1
PTmetal	PLATINUM (II) ION	1