X-group (possible homology)

519 mRNA decapping enzyme DcpS N-terminal domain

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Ligands and drugs

Member domains

with ligand contacts (≤ 4 Å)

53.7% of members

with DrugDomain annotations

56.7% of members

with a DrugBank compound

32.8% 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
Nucleosides, nucleotides, and analogues	2	0.6	3.67×	not tested
Organoheterocyclic compounds	1	0.3	3.29×	not tested
Homogeneous non-metal compounds	1	0.4	2.36×	not tested
Homogeneous metal compounds	1	1.0	1.03×	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
DB01960	M7G	7-methyl-7,8-dihydroguanosine-5'-diphosphate	11
DB01649	GTA	7-methyl-GpppA	2
DB03685	U	Uridine monophosphate	2
DB03958	GTG	7-methyl-guanosine-5'-triphosphate-5'-guanosine	2
DB07642	DD1	5-{[1-(2-fluorobenzyl)piperidin-4-yl]methoxy}quinazoline-2,4-diamine	2
DB07643	DD2	5-{[1-(2,3-dichlorobenzyl)piperidin-4-yl]methoxy}quinazoline-2,4-diamine	2
DB07644	DD3	5-[(1S)-1-(3-chlorophenyl)ethoxy]quinazoline-2,4-diamine	2

Most frequently bound compounds

PDB ligand	Name	Domains in contact
M7G	7N-METHYL-8-HYDROGUANOSINE-5'-DIPHOSPHATE	10
30U	4-{[(2,4-diaminoquinazolin-5-yl)oxy]methyl}benzenesulfonic acid	4
2PO	PHOSPHONATE	2
30S	2-{[(2,4-diaminoquinazolin-5-yl)oxy]methyl}benzenesulfonic acid	2
31G	3-{[(2,4-diaminoquinazolin-5-yl)oxy]methyl}benzenesulfonic acid	2
AJQ	[(2~{S},3~{S},4~{R},5~{R})-5-(2-azanyl-7-methyl-6-oxidanylidene-1~{H}-purin-7-ium-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methylsulfanyl-[[[(2~{S},3~{S},4~{R},5~{R})-5-(2-azanyl-6-oxidanylidene-3~{H}-purin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methylsulfanyl-oxidanyl-phosphoryl]oxy-sulfanyl-phosphoryl]oxy-phosphinic acid	2
CL	CHLORIDE ION	2
DD1	5-{[1-(2-fluorobenzyl)piperidin-4-yl]methoxy}quinazoline-2,4-diamine	2
DD2	5-{[1-(2,3-dichlorobenzyl)piperidin-4-yl]methoxy}quinazoline-2,4-diamine	2
DD3	5-[(1S)-1-(3-chlorophenyl)ethoxy]quinazoline-2,4-diamine	2
GTA	P1-7-METHYLGUANOSINE-P3-ADENOSINE-5',5'-TRIPHOSPHATE	2
GTG	7-METHYL-GUANOSINE-5'-TRIPHOSPHATE-5'-GUANOSINE	2
YT3metal	YTTRIUM (III) ION	2