X-group (possible homology)

566 P40 nucleoprotein-like

Open in classification tree →

Ligands and drugs

530

Member domains

with ligand contacts (≤ 4 Å)

15.8% of members

with DrugDomain annotations

16.4% of members

with a DrugBank compound

4.7% 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
Mixed metal/non-metal compounds	1	0.1	8.05×	not tested
Organic acids and derivatives	2	0.9	2.19×	not tested
Homogeneous non-metal compounds	2	1.3	1.57×	not tested
Organoheterocyclic compounds	1	0.9	1.10×	not tested
Organic oxygen compounds	1	1.2	0.85×	not tested
Homogeneous metal compounds	1	2.9	0.34×	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
DB00120	PHE	Phenylalanine	6
DB00128	ASP	Aspartic acid	4
DB01694	TAR	D-tartaric acid	3

Most frequently bound compounds

PDB ligand	Name	Domains in contact
IUM	URANYL (VI) ION	35
BO4	BORATE ION	12
PBmetal	LEAD (II) ION	6
PHE	PHENYLALANINE	6
ASP	ASPARTIC ACID	4
CL	CHLORIDE ION	3
TAR	D(-)-TARTARIC ACID	3
BR	BROMIDE ION	2
DV4	4-{[4-(acetylamino)-1-methyl-1H-pyrrole-2-carbonyl]amino}-1-methyl-N-{4-[(1-methyl-1H-pyrrol-3-yl)amino]-4-oxobutyl}-1H-imidazole-2-carboxamide	2
M81	1-[(2-chlorophenyl)methyl]pyrazole-3,5-dicarboxylic acid	2
ZKW	1-[(2,4-dichlorophenyl)methyl]pyrazole-3,5-dicarboxylic acid	2
MZS	1-[(4-fluorophenyl)methyl]pyrazole-3,5-dicarboxylic acid	1