X-group (possible homology)

850 Hypothetical protein Ta1206-like

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Ligands and drugs

974

Member domains

567

with ligand contacts (≤ 4 Å)

58.2% of members

529

with DrugDomain annotations

54.3% of members

367

with a DrugBank compound

37.7% 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	6	5.3	1.13×	q = 0.83
Phenylpropanoids and polyketides	1	0.2	4.43×	not tested
Mixed metal/non-metal compounds	1	0.2	4.39×	not tested
Nucleosides, nucleotides, and analogues	11	3.0	3.67×	not tested
Benzenoids	2	0.8	2.52×	not tested
Organoheterocyclic compounds	4	1.7	2.40×	not tested
Organic oxygen compounds	5	2.2	2.31×	not tested
Homogeneous non-metal compounds	5	2.3	2.14×	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
DB03222	DTP	dATP	95
DB02181	DGT	2'-Deoxyguanosine-5'-Triphosphate	84
DB03258	DCP	2'-Deoxycytidine 5'-triphosphate	63
DB02452	TTP	Thymidine 5'-triphosphate	52
DB00171	ATP	ATP	15
DB02431	CTP	Cytidine-5'-Triphosphate	5
DB07435	BAP	1,2,3-TRIHYDROXY-1,2,3,4-TETRAHYDROBENZO[A]PYRENE	3
DB04457	DG	2'-Deoxyguanosine-5'-Monophosphate	2
DB00515	CPT	Cisplatin	1
DB01643	TMP	Thymidine monophosphate	1
DB02189	DDS	2',3'-Dideoxyadenosine triphosphate	1
DB07652	—	—	1
DB08237	—	—	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
DTP	2'-DEOXYADENOSINE 5'-TRIPHOSPHATE	101
DGT	2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE	84
DPO	DIPHOSPHATE	64
DCP	2'-DEOXYCYTIDINE-5'-TRIPHOSPHATE	63
TTP	THYMIDINE-5'-TRIPHOSPHATE	52
0KX	2'-deoxy-5'-O-[(R)-hydroxy{[(R)-hydroxy(phosphonooxy)phosphoryl]amino}phosphoryl]cytidine	48
DZ4	2'-deoxy-5'-O-[(R)-hydroxy{[(R)-hydroxy(phosphonooxy)phosphoryl]amino}phosphoryl]adenosine	44
XG4	2'-deoxy-5'-O-[(R)-hydroxy{[(R)-hydroxy(phosphonooxy)phosphoryl]amino}phosphoryl]guanosine	41
MNmetal	MANGANESE (II) ION	26
MGmetal	MAGNESIUM ION	23
1FZ	5'-O-[(R)-hydroxy{[(R)-hydroxy(phosphonooxy)phosphoryl]amino}phosphoryl]thymidine	18
ATP	ADENOSINE-5'-TRIPHOSPHATE	15
DCT	2',3'-DIDEOXYCYTIDINE 5'-TRIPHOSPHATE	11
CAmetal	CALCIUM ION	7
2TM	5'-O-[(S)-hydroxy{[(S)-hydroxy(phosphonooxy)phosphoryl]methyl}phosphoryl]cytidine	6
CTP	CYTIDINE-5'-TRIPHOSPHATE	6
STP	2'-DEOXYADENOSINE 5'-O-(1-THIOTRIPHOSPHATE)	6
DDY	2',3'-DIDEOXYCYTOSINE-5'-DIPHOSPHATE	4
POP	PYROPHOSPHATE 2-	4
TTW	5'-O-[hydroxy{[hydroxy(phosphonoamino)phosphoryl]oxy}phosphoryl]thymidine	4