X-group (possible homology)

511 Heat shock protein 70kD (HSP70), peptide-binding domain

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Ligands and drugs

1,657

Member domains

with ligand contacts (≤ 4 Å)

5.3% of members

with DrugDomain annotations

5.0% of members

with a DrugBank compound

4.4% 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
Organosulfur compounds	2	0.1	14×	not tested
Organic nitrogen compounds	1	0.2	4.54×	not tested
Benzenoids	1	0.5	1.98×	not tested
Lipids and lipid-like molecules	1	0.8	1.30×	not tested
Nucleosides, nucleotides, and analogues	2	1.9	1.05×	not tested
Organoheterocyclic compounds	1	1.1	0.94×	not tested
Organic oxygen compounds	1	1.4	0.73×	not tested
Homogeneous metal compounds	2	3.4	0.59×	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	4
DB02774	PDO	1,3-Propanediol	2
DB03345	BME	Mercaptoethanol	2
DB09130	—	—	2
DB12695	—	—	2
DB00945	—	Acetylsalicylic acid	1
DB01254	—	Dasatinib	1
DB04216	—	Quercetin	1
DB11638	—	—	1

Most frequently bound compounds

PDB ligand	Name	Domains in contact
CAmetal	CALCIUM ION	7
AMP	ADENOSINE MONOPHOSPHATE	4
3UM	(5beta,6alpha,8alpha,14alpha)-13-ethenyl-5,6-dihydroxy-14-methylpodocarp-12-en-15-oic acid	2
6LN	ethane-1,2-dithiol	2
BME	BETA-MERCAPTOETHANOL	2
PDO	1,3-PROPANDIOL	2
TMO	trimethylamine oxide	2
3JE	triphenyl(phenylethynyl)phosphonium	1
LZ1	1H-indazole	1
MGmetal	MAGNESIUM ION	1
QMK	~{N}-[2-[1-[(2~{R},3~{R},4~{S},5~{R})-3,4-bis(oxidanyl)-5-[[tris(oxidanyl)-$l^{5}-phosphanyl]oxymethyl]oxolan-2-yl]-1,2,3-triazol-4-yl]ethyl]ethanamide	1
V7Z	methanesulfonamide	1