X-group (possible homology)

4952 L-aspartase N-terminal domain-like

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Ligands and drugs

1,872

Member domains

333

with ligand contacts (≤ 4 Å)

17.8% of members

269

with DrugDomain annotations

14.4% of members

201

with a DrugBank compound

10.7% 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)

7.4

Superclasses per 20 proteins

narrower than 54% of the 256 X-groups with enough proteins to compare (median 7.6)

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	19	5.2	3.66×	q < 0.0001
Homogeneous non-metal compounds	8	7.2	1.11×	q = 0.75
Nucleosides, nucleotides, and analogues	10	9.3	1.08×	q = 0.89
Organic oxygen compounds	4	6.7	0.60×	q = 0.46
Homogeneous metal compounds	4	16.5	0.24×	q < 0.0001
Organoheterocyclic compounds	0	5.2	0	q = 0.01
Phenylpropanoids and polyketides	6	0.7	8.61×	not tested
Organosulfur compounds	1	0.7	1.45×	not tested
Benzenoids	2	2.5	0.82×	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
DB00131	AMP	Adenosine phosphate	29
DB01677	FUM	Fumaric acid	21
DB04066	HC4	p-Coumaric acid	16
DB18313	TCA	Cinnamic acid	14
DB02267	AS1	Argininosuccinate	13
DB01880	DHC	3,4-Dihydroxycinnamic Acid	8
DB04418	2SA	Adenylosuccinic acid	8
DB01700	AMZ	AICA ribonucleotide	4
DB03345	BME	Mercaptoethanol	4
DB00125	ARG	Arginine	3
DB00128	ASP	Aspartic acid	3
DB00135	TYR	Tyrosine	2
DB02024	HCI	3-phenylpropionic acid	2
DB02749	PMA	Pyromellitic Acid	2
DB03452	SIF	3-Trimethylsilylsuccinic Acid	2
DB04447	DTT	1,4-Dithiothreitol	2
DB14756	SRT	meso-Tartaric acid	2
DB00117	—	Histidine	1
DB00120	PHE	Phenylalanine	1
DB00139	SIN	Succinic acid	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CL	CHLORIDE ION	52
FUM	FUMARIC ACID	31
AMP	ADENOSINE MONOPHOSPHATE	29
AS1	ARGININOSUCCINATE	22
HC4	4'-HYDROXYCINNAMIC ACID	16
TCA	PHENYLETHYLENECARBOXYLIC ACID	14
LMR	(2S)-2-hydroxybutanedioic acid	12
ARG	ARGININE	11
PPH	[(1R)-1-amino-2-phenylethyl]phosphonic acid	10
2SA	2-[9-(3,4-DIHYDROXY-5-PHOSPHONOOXYMETHYL-TETRAHYDRO-FURAN-2-YL)-9H-PURIN-6-YLAMINO]-SUCCINIC ACID	8
BQ7	(3S)-3-amino-2,2-difluoro-3-phenylpropanoic acid	8
DHC	CAFFEIC ACID	8
KZ5	(2~{S})-2-(dimethylamino)-3-(2-sulfo-1~{H}-imidazol-4-yl)propanoic acid	8
PMI	(2-AMINO-2,3-DIHYDRO-1H-INDEN-2-YL)PHOSPHONIC ACID	8
SSS	N-{[5-AMINO-1-(5-O-PHOSPHONO-BETA-D-ARABINOFURANOSYL)-1H-IMIDAZOL-4-YL]CARBONYL}-L-ASPARTIC ACID	7
NAmetal	SODIUM ION	5
BME	BETA-MERCAPTOETHANOL	4
CAmetal	CALCIUM ION	4
COmetal	COBALT (II) ION	4
AMZ	AMINOIMIDAZOLE 4-CARBOXAMIDE RIBONUCLEOTIDE	3