X-group (possible homology)

180 Acid phosphatase/Vanadium-dependent haloperoxidase

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Ligands and drugs

717

Member domains

108

with ligand contacts (≤ 4 Å)

15.1% of members

with DrugDomain annotations

12.0% of members

with a DrugBank compound

6.8% 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	3	5.8	0.52×	q = 0.21
Mixed metal/non-metal compounds	9	0.3	36×	not tested
Organic nitrogen compounds	1	0.4	2.65×	not tested
Lipids and lipid-like molecules	2	1.3	1.52×	not tested
Homogeneous non-metal compounds	3	2.6	1.18×	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
DB03570	144	Tris-Hydroxymethyl-Methyl-Ammonium	6
DB07780	FPP	Farnesyl diphosphate	4
DB15878	MOO	Molybdate	3

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CAmetal	CALCIUM ION	34
VO4	VANADATE ION	32
NAmetal	SODIUM ION	20
BR	BROMIDE ION	10
CL	CHLORIDE ION	7
144	TRIS-HYDROXYMETHYL-METHYL-AMMONIUM	6
WO4	TUNGSTATE(VI)ION	6
FPP	FARNESYL DIPHOSPHATE	4
MGmetal	MAGNESIUM ION	4
MOO	MOLYBDATE ION	3
NAG	2-acetamido-2-deoxy-beta-D-glucopyranose	3
46E	(2R)-3-{[(S)-(2-aminoethoxy)(hydroxy)phosphoryl]oxy}-2-(tetradecanoyloxy)propyl tetradecanoate	2
AZI	AZIDE ION	2
LBN	1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine	2
LPP	2-(HEXADECANOYLOXY)-1-[(PHOSPHONOOXY)METHYL]ETHYL HEXADECANOATE	2
OLC	(2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate	2
PER	PEROXIDE ION	2
PT5	[(2R)-1-octadecanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propan-2-yl] (8Z)-icosa-5,8,11,14-tetraenoate	2
CPL	1-PALMITOYL-2-LINOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE	1
ILW	1,3,5-trimethoxybenzene	1