X-group (possible homology)

253 Argininosuccinate synthetase-C

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Ligands and drugs

695

Member domains

with ligand contacts (≤ 4 Å)

6.0% of members

with DrugDomain annotations

6.3% of members

with a DrugBank compound

6.0% 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
Organic acids and derivatives	6	0.9	6.55×	not tested
Organic nitrogen compounds	1	0.2	5.30×	not tested
Nucleosides, nucleotides, and analogues	5	1.6	3.06×	not tested
Homogeneous non-metal compounds	2	1.3	1.57×	not tested
Homogeneous metal compounds	2	2.9	0.69×	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
DB00171	ATP	ATP	15
DB00125	ARG	Arginine	12
DB00128	ASP	Aspartic acid	11
DB00155	CIR	Citrulline	11
DB00131	AMP	Adenosine phosphate	5
DB00139	SIN	Succinic acid	4
DB02267	AS1	Argininosuccinate	4
DB00536	GAI	Guanidine	2
DB00640	ADN	Adenosine	2
DB02175	MLA	Malonic acid	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
ARG	ARGININE	14
CIR	CITRULLINE	11
ATP	ADENOSINE-5'-TRIPHOSPHATE	7
ASP	ASPARTIC ACID	6
ANP	PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER	5
AMP	ADENOSINE MONOPHOSPHATE	4
AS1	ARGININOSUCCINATE	4
SIN	SUCCINIC ACID	4
CL	CHLORIDE ION	3
ADN	ADENOSINE	2
GAI	GUANIDINE	2
MGmetal	MAGNESIUM ION	1
MLA	MALONIC ACID	1