X-group (possible homology)

285 N-acetylmuramoyl-L-alanine amidase-like

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Ligands and drugs

372

Member domains

228

with ligand contacts (≤ 4 Å)

61.3% of members

226

with DrugDomain annotations

60.8% of members

158

with a DrugBank compound

42.5% 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)

6.4

Superclasses per 20 proteins

narrower than 70% 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
Homogeneous metal compounds	22	12.1	1.82×	q = 1.9e-4
Homogeneous non-metal compounds	4	5.3	0.75×	q = 0.71
Nucleosides, nucleotides, and analogues	0	6.8	0	q = 1.3e-3
Organic acids and derivatives	8	3.8	2.10×	not tested
Organic oxygen compounds	6	4.9	1.22×	not tested
Benzenoids	1	1.8	0.56×	not tested
Lipids and lipid-like molecules	1	2.7	0.36×	not tested
Organoheterocyclic compounds	1	3.8	0.26×	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
DB09459	TLA	L-tartaric acid	63
DB00141	NAG	N-Acetylglucosamine	19
DB04736	MLD	2-ACETAMIDO-2-DEOXY-BETA-D-GLUCOPYRANOSE(BETA1-4)-2-ACETAMIDO-1,6-ANHYDRO-3-O-[(R)-1-CARBOXYETHYL]-2-DEOXY-BETA-D-GLUCOPYRANOSE-L-ALANYL-GAMMA-D-GLUTAMYL-MESO-DIAMINOPIMELYL-D-ALANINE	10
DB00160	ALA	Alanine	6
DB03193	STE	Stearic acid	6
DB14756	SRT	meso-Tartaric acid	6
DB11091	PEO	Hydrogen peroxide	4
DB02174	DGN	D-Glutamine	3
DB02938	SHV	Heptanoic acid	3
DB03017	DAO	Lauric acid	3
DB03590	API	2,6-Diaminopimelic Acid	3
DB03796	PLM	Palmitic Acid	3
DB08231	MYR	Myristic acid	3
DB01694	TAR	D-tartaric acid	2
DB02517	DGL	D-Glutamic Acid	2
DB03066	LAC	D-Lactic acid	2
DB03568	BUA	Butyric Acid	2
DB03740	NDG	N-acetyl-alpha-D-glucosamine	2
DB03940	OXM	Oxamic Acid	2
DB00142	GLU	Glutamic acid	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
TLA	L(+)-TARTARIC ACID	63
ZNmetal	ZINC ION	61
NAmetal	SODIUM ION	13
NAG	2-acetamido-2-deoxy-beta-D-glucopyranose	13
LP5	(R)-((2R,3S,4R,5R,6R)-3-HYDROXY-2-(HYDROXYMETHYL)-5-((R)-3-HYDROXYTETRADECANAMIDO)-6-(PHOSPHONOOXY)TETRAHYDRO-2H-PYRAN-4-YL) 3-HYDROXYTETRADECANOATE	9
6NA	HEXANOIC ACID	8
MLD	GLCNAC(BETA1-4)-MURNAC(1,6-ANHYDRO)-L-ALA-GAMMA-D-GLU-MESO-A2PM-D-ALA	8
CL	CHLORIDE ION	7
ALA	ALANINE	6
SRT	S,R MESO-TARTARIC ACID	6
STE	STEARIC ACID	6
11Z	11-cyclohexylundecanoic acid	4
NImetal	NICKEL (II) ION	4
PEO	HYDROGEN PEROXIDE	4
PNR	4-nitrophenyl hexadecanoate	4
RAM	alpha-L-rhamnopyranose	4
XXC	7-phenylheptanoic acid	4
AMU	N-acetyl-beta-muramic acid	3
DGN	D-GLUTAMINE	3
ISJ	(3R,4R)-3-[(1-carboxyethenyl)oxy]-4-hydroxycyclohexa-1,5-diene-1-carboxylic acid	3