X-group (possible homology)

7562 Thiamin pyrophosphokinase, catalytic domain

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Ligands and drugs

103

Member domains

with ligand contacts (≤ 4 Å)

28.2% of members

with DrugDomain annotations

27.2% of members

with a DrugBank compound

23.3% 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
Organoheterocyclic compounds	7	1.1	6.59×	not tested
Homogeneous metal compounds	6	3.4	1.77×	not tested
Organic oxygen compounds	1	1.4	0.73×	not tested
Nucleosides, nucleotides, and analogues	1	1.9	0.52×	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
DB00152	VIB	Thiamine	11
DB04768	PYI	Pyrithiamine Pyrophosphate	3
DB00131	AMP	Adenosine phosphate	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
MGmetal	MAGNESIUM ION	13
VIB	3-(4-AMINO-2-METHYL-PYRIMIDIN-5-YLMETHYL)-5-(2-HYDROXY-ETHYL)-4-METHYL-THIAZOL-3-IUM	12
TPP	THIAMINE DIPHOSPHATE	7
FEmetal	FE (III) ION	4
CAmetal	CALCIUM ION	2
NAmetal	SODIUM ION	2
PYI	1-[(4-AMINO-2-METHYLPYRIMIDIN-5-YL)METHYL]-3-(2-{[HYDROXY(PHOSPHONOOXY)PHOSPHORYL]OXY}ETHYL)-2-METHYLPYRIDINIUM	2
UNX	UNKNOWN ATOM OR ION	2
VNP	3-[(4-AMINO-2-METHYLPYRIMIDIN-5-YL)METHYL]-5-(2-{[HYDROXY(PHOSPHONOAMINO)PHOSPHORYL]OXY}ETHYL)-4-METHYL-1,3-THIAZOL-3-IUM	2
AMP	ADENOSINE MONOPHOSPHATE	1