X-group (possible homology)

3447 Isoprenylcysteine carboxyl methyltransferase (ICMT)

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Ligands and drugs

527

Member domains

with ligand contacts (≤ 4 Å)

0.9% of members

with DrugDomain annotations

1.5% of members

with a DrugBank compound

1.5% 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
Hydrocarbons	1	0.0	48×	not tested
Lipids and lipid-like molecules	2	0.3	6.07×	not tested
Nucleosides, nucleotides, and analogues	3	0.8	3.67×	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
DB01752	SAH	S-adenosyl-L-homocysteine	3
DB01126	—	—	2
DB01216	—	Finasteride	2
DB02338	NDP	NADPH	2
DB00157	—	NADH	1
DB00367	—	Levonorgestrel	1
DB00548	—	Azelaic acid	1
DB03429	CDL	Tetrastearoyl cardiolipin	1
DB03796	PLM	Palmitic Acid	1
DB03831	MPG	[(Z)-octadec-9-enyl] (2R)-2,3-bis(oxidanyl)propanoate	1
DB09389	—	—	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
SAH	S-ADENOSYL-L-HOMOCYSTEINE	3
NDP	NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE	2
CDL	CARDIOLIPIN	1
D10	DECANE	1
MPG	[(Z)-octadec-9-enyl] (2R)-2,3-bis(oxidanyl)propanoate	1
PLM	PALMITIC ACID	1
UND	UNDECANE	1