X-group (possible homology)

602 L-aspartase middle domain-like

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Ligands and drugs

1,844

Member domains

378

with ligand contacts (≤ 4 Å)

20.5% of members

370

with DrugDomain annotations

20.1% of members

262

with a DrugBank compound

14.2% 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)

8.5

Superclasses per 20 proteins

broader than 67% 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	22	6.6	3.35×	q < 0.0001
Homogeneous non-metal compounds	11	9.1	1.21×	q = 0.54
Nucleosides, nucleotides, and analogues	10	11.7	0.85×	q = 0.69
Organic oxygen compounds	7	8.4	0.83×	q = 0.77
Homogeneous metal compounds	8	20.8	0.38×	q = 2.7e-4
Organoheterocyclic compounds	2	6.5	0.31×	q = 0.09
Phenylpropanoids and polyketides	7	0.9	7.94×	not tested
Organosulfur compounds	1	0.9	1.15×	not tested
Benzenoids	3	3.1	0.97×	not tested
Organic nitrogen compounds	1	1.4	0.74×	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
DB01677	FUM	Fumaric acid	39
DB00131	AMP	Adenosine phosphate	31
DB02267	AS1	Argininosuccinate	16
DB04066	HC4	p-Coumaric acid	16
DB18313	TCA	Cinnamic acid	14
DB04418	2SA	Adenylosuccinic acid	10
DB01880	DHC	3,4-Dihydroxycinnamic Acid	8
DB00125	ARG	Arginine	7
DB00128	ASP	Aspartic acid	6
DB01700	AMZ	AICA ribonucleotide	6
DB04447	DTT	1,4-Dithiothreitol	6
DB03345	BME	Mercaptoethanol	4
DB03854	N2P	Cadaverine	4
DB14756	SRT	meso-Tartaric acid	4
DB00120	PHE	Phenylalanine	2
DB00135	TYR	Tyrosine	2
DB00139	SIN	Succinic acid	2
DB02024	HCI	3-phenylpropionic acid	2
DB02126	CIN	4-Carboxycinnamic Acid	2
DB02379	BGC	Beta-D-Glucose	2

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CL	CHLORIDE ION	58
FUM	FUMARIC ACID	39
AMP	ADENOSINE MONOPHOSPHATE	31
MGmetal	MAGNESIUM ION	19
LMR	(2S)-2-hydroxybutanedioic acid	18
HC4	4'-HYDROXYCINNAMIC ACID	16
AS1	ARGININOSUCCINATE	15
TCA	PHENYLETHYLENECARBOXYLIC ACID	14
2SA	2-[9-(3,4-DIHYDROXY-5-PHOSPHONOOXYMETHYL-TETRAHYDRO-FURAN-2-YL)-9H-PURIN-6-YLAMINO]-SUCCINIC ACID	10
CAmetal	CALCIUM ION	9
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	8
NAmetal	SODIUM ION	7
AMZ	AMINOIMIDAZOLE 4-CARBOXAMIDE RIBONUCLEOTIDE	6
ARG	ARGININE	6
ASP	ASPARTIC ACID	6
DTT	2,3-DIHYDROXY-1,4-DITHIOBUTANE	6