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RCSB PDB 3D Protein Structure Lookup
x402
RCSB PDB 3D Protein Structure Lookup is a paid API for AI agents from bio.memoryapi.org, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Retrieves 3D protein structure data from the RCSB Protein Data Bank (PDB), including PDB ID, title, experimental method, resolution, chains, and molecular weight.
Price / call$0.005
Success—
StatusUnknown
How this service works
RCSB PDB 3D protein structure data — PDB ID, title, experimental method, resolution, chains, molecular weight.
Output
Returns structured metadata for the queried PDB entry, including the PDB ID, full structure title, experimental method (e.g. X-ray crystallography, cryo-EM), resolution in Angstroms, list of polypeptide chains, and molecular weight of the macromolecular assembly.
Example use cases
Example prompt
“Can you pull up the PDB structure entry for 1HHO — I need the title, experimental method, resolution, chain composition, and molecular weight from the RCSB Protein Data Bank.”
Technical details
Endpoint
GEThttps://bio.memoryapi.org/x402/bio/structureWhen to prefer
Use this endpoint when an agent needs structural biology metadata — specifically PDB ID, experimental details, resolution, chain composition, or molecular weight — directly from the RCSB PDB. Prefer this over UniProt endpoints when the user is interested in 3D structure properties rather than sequence or functional annotation.
Side effects
- Invalid or non-existent PDB ID returns an error or empty result
- Network timeout if PDB upstream is slow
- Malformed PDB ID format rejected with 4xx response
- Deprecated or obsolete PDB entries may return partial data
Input
{
"name": "metformin",
"type": "label"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | — |
Output
{
"count": 5,
"query": "BRCA1",
"total": 5,
"source": "RCSB Protein Data Bank",
"success": true,
"disclaimer": "Information only.",
"structures": [
{
"url": "https://www.rcsb.org/structure/2CP8",
"title": "Solution structure of the RSGI RUH-046, a UBA domain from human Next to BRCA1 gene 1 protein (KIAA0049 protein) R923H variant",
"chains": 1,
"method": "SOLUTION NMR",
"pdb_id": "2CP8",
"molecular_weight": 5.83,
"resolution_angstrom": null
},
{
"url": "https://www.rcsb.org/structure/3FA2",
"title": "Crystal Structure of the BRCA1 Associated Ring Domain (BARD1) Tandem BRCT Domains",
"chains": 2,
"method": "X-RAY DIFFRACTION",
"pdb_id": "3FA2",
"molecular_weight": 50.48,
"resolution_angstrom": 2.2
},
{
"url": "https://www.rcsb.org/structure/4OLE",
"title": "Crystal structure of a neighbor of BRCA1 gene 1 (NBR1) from Homo sapiens at 2.52 A resolution",
"chains": 4,
"method": "X-RAY DIFFRACTION",
"pdb_id": "4OLE",
"molecular_weight": 56.32,
"resolution_angstrom": 2.52
},
{
"url": "https://www.rcsb.org/structure/3PXA",
"title": "Impact of BRCA1 BRCT domain missense substitutions on phospho-peptide recognition: G1656D",
"chains": 1,
"method": "X-RAY DIFFRACTION",
"pdb_id": "3PXA",
"molecular_weight": 24.74,
"resolution_angstrom": 2.55
},
{
"url": "https://www.rcsb.org/structure/3PXB",
"title": "Impact of BRCA1 BRCT domain missense substitutions on phospho-peptide recognition: T1700A",
"chains": 1,
"method": "X-RAY DIFFRACTION",
"pdb_id": "3PXB",
"molecular_weight": 24.66,
"resolution_angstrom": 2.5
}
]
}Tags
x402
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