X-group (possible homology)

4018 a+b domain in carbohydrate phosphatases

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Ligands and drugs

1,512

Member domains

645

with ligand contacts (≤ 4 Å)

42.7% of members

614

with DrugDomain annotations

40.6% of members

331

with a DrugBank compound

21.9% 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)

9.3

Superclasses per 20 proteins

broader than 84% 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 oxygen compounds	22	7.7	2.87×	q < 0.0001
Homogeneous metal compounds	39	18.9	2.07×	q < 0.0001
Homogeneous non-metal compounds	11	8.3	1.33×	q = 0.40
Nucleosides, nucleotides, and analogues	13	10.6	1.22×	q = 0.45
Organic acids and derivatives	7	6.0	1.18×	q = 0.73
Organoheterocyclic compounds	3	5.9	0.51×	q = 0.34
Organometallic compounds	1	0.1	18×	not tested
Organic nitrogen compounds	3	1.2	2.45×	not tested
Benzenoids	4	2.8	1.42×	not tested
Organosulfur compounds	1	0.8	1.26×	not tested
Lipids and lipid-like molecules	1	4.3	0.23×	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	115
DB04551	FBP	beta-D-fructofuranose 1,6-bisphosphate	41
DB02778	AHG	2,5-Anhydroglucitol-1,6-Biphosphate	21
DB08484	ROK	4-AMINO-N-[(2-SULFANYLETHYL)CARBAMOYL]BENZENESULFONAMIDE	8
DB00142	GLU	Glutamic acid	5
DB03997	HSA	L-histidinol phosphate	5
DB00128	ASP	Aspartic acid	4
DB03461	NAP	Nicotinamide adenine dinucleotide phosphate	4
DB07270	870	N-[7-(3-AMINOPHENYL)-5-METHOXY-1,3-BENZOXAZOL-2-YL]-2,5-DICHLOROBENZENESULFONAMIDE	4
DB07312	A37	2,5-DICHLORO-N-(5-CHLORO-1,3-BENZOXAZOL-2-YL)BENZENESULFONAMIDE	4
DB07321	A74	2,5-DICHLORO-N-[5-METHOXY-7-(6-METHOXYPYRIDIN-3-YL)-1,3-BENZOXAZOL-2-YL]BENZENESULFONAMIDE	4
DB13178	INS	Inositol	4
DB14756	SRT	meso-Tartaric acid	4
DB02848	PFE	{4-[3-(6,7-Diethoxy-Quinazolin-4-Ylamino)-Phenyl]-Thiazol-2-Yl}-Methanol	3
DB03811	HSO	Histidinol	3
DB04175	CLI	Mdl-29951	3
DB01700	AMZ	AICA ribonucleotide	2
DB01812	A3P	Adenosine 3',5'-diphosphate	2
DB03542	LIP	L-Myo-Inositol-1-Phosphate	2
DB12418	LSA	Saccharin	2

Most frequently bound compounds

PDB ligand	Name	Domains in contact
MGmetal	MAGNESIUM ION	175
AMP	ADENOSINE MONOPHOSPHATE	115
F6P	6-O-phosphono-beta-D-fructofuranose	82
MNmetal	MANGANESE (II) ION	58
FBP	1,6-di-O-phosphono-beta-D-fructofuranose	39
CAmetal	CALCIUM ION	34
ZNmetal	ZINC ION	31
CL	CHLORIDE ION	25
AHG	2,5-anhydro-1,6-di-O-phosphono-D-glucitol	20
FDP	2,6-di-O-phosphono-beta-D-fructofuranose	20
IPD	D-MYO-INOSITOL-1-PHOSPHATE	17
TLmetal	THALLIUM (I) ION	15
GDmetal	GADOLINIUM ATOM	10
2C1	N-({4-bromo-6-[(methylcarbamoyl)amino]pyridin-2-yl}carbamoyl)-5-(2-methoxyethyl)-4-methylthiophene-2-sulfonamide	8
947	N-[(5-bromo-1,3-thiazol-2-yl)carbamoyl]-2-ethyl[1,1'-biphenyl]-4-sulfonamide	8
94S	N-[(5-bromo-1,3-thiazol-2-yl)carbamoyl]-4-methoxy-3-(2-methylpropyl)benzene-1-sulfonamide	8
94V	N-[(5-bromo-1,3-thiazol-2-yl)carbamoyl]-2-chlorobenzene-1-sulfonamide	8
94Y	N-[(5-bromo-1,3-thiazol-2-yl)carbamoyl]-3,4-dichlorobenzene-1-sulfonamide	8
95D	2-[(3-{[(5-bromo-1,3-thiazol-2-yl)carbamoyl]sulfamoyl}-1-methyl-1H-indol-7-yl)oxy]acetamide	8
95G	N-[(5-bromo-1,3-thiazol-2-yl)carbamoyl]-4-[(3,4-dichloro-1-methyl-1H-pyrazol-5-yl)oxy]benzene-1-sulfonamide	8