X-group (possible homology)

5049 Ammonium transporter-related

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Ligands and drugs

582

Member domains

136

with ligand contacts (≤ 4 Å)

23.4% of members

with DrugDomain annotations

12.9% of members

with a DrugBank compound

8.9% 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
Homogeneous metal compounds	2	6.3	0.32×	q = 0.04
Organometallic compounds	1	0.0	55×	not tested
Lipids and lipid-like molecules	9	1.4	6.31×	not tested
Organic nitrogen compounds	1	0.4	2.45×	not tested
Organoheterocyclic compounds	4	2.0	2.03×	not tested
Homogeneous non-metal compounds	3	2.8	1.09×	not tested
Organic acids and derivatives	2	2.0	1.01×	not tested
Nucleosides, nucleotides, and analogues	3	3.5	0.85×	not tested
Organic oxygen compounds	1	2.6	0.39×	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
DB00140	RBF	Riboflavin	10
DB03247	FMN	Flavin mononucleotide	10
DB02379	BGC	Beta-D-Glucose	6
DB04540	CLR	Cholesterol	6
DB04327	PEE	Phosphatidylethanolamine	3
DB08690	UQ2	Ubiquinone Q2	2
DB01828	NME	Methylamine	1
DB02451	BNG	B-nonylglucoside	1
DB09157	CO2	Carbon dioxide	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
FMN	FLAVIN MONONUCLEOTIDE	34
RBF	RIBOFLAVIN	34
3PE	1,2-Distearoyl-sn-glycerophosphoethanolamine	7
AJP	Digitonin	7
PTY	PHOSPHATIDYLETHANOLAMINE	7
A1LU9	N-(4-acetamidophenyl)-5-ethanoyl-furan-2-carboxamide	6
BGC	beta-D-glucopyranose	6
CLR	CHOLESTEROL	6
NAmetal	SODIUM ION	6
P6L	(2S)-3-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-2-[(6E)-HEXADEC-6-ENOYLOXY]PROPYL (8E)-OCTADEC-8-ENOATE	6
PEE	1,2-dioleoyl-sn-glycero-3-phosphoethanolamine	6
SPL	OCTANOIC ACID (2-HYDROXY-1-HYDROXYMETHYL-HEPTADEC-3-ENYL)-AMIDE	6
URE	UREA	6
CL	CHLORIDE ION	4
Y01	CHOLESTEROL HEMISUCCINATE	4
5D3	10-(4-ethylphenyl)sulfonyl-~{N}-(thiophen-2-ylmethyl)-5-thia-1,8,11,12-tetrazatricyclo[7.3.0.0^{2,6}]dodeca-2(6),3,7,9,11-pentaen-7-amine	3
8HC	8-hydroxyquinoline-2-carboxylic acid	3
A1EJ7	5-ethanoyl-~{N}-[3-(phenylsulfonylamino)phenyl]furan-2-carboxamide	3
A1LVA	N-[3-[1,1-bis(oxidanylidene)-1,2-thiazolidin-2-yl]-4-chloranyl-phenyl]-2-methoxy-5-methyl-benzenesulfonamide	3
A1LYJ	(5E)-2-azanylidene-5-[(2,3-dimethoxyphenyl)methylidene]-1,3-thiazolidin-4-one	3