Cortexa research tool·structure·rcsb_graphql

RCSBGraphQL Get Polymer Entity

Get detailed polymer entity information from PDB structures including amino acid sequence, chain IDs, polymer type, source organism, and domain/family annotations (Pfam, GO terms). Each PDB entry can contain multiple polymer entities (chains). Use this to retrieve the protein sequence, identify chains, and find functional annotations for proteins in a PDB structure.

Livelast probed 2026-04-30 23:07Z· 111msCortexa

Status

The most recent probe succeeded. Safe to call from the agent today.

Last probed: 1d ago
Last success: 1d ago
Last latency: 111ms

Schema

JSON Schema the agent (or your API call) must match.

{
  "properties": {
    "entity_ids": {
      "description": "Comma-separated list of entity IDs for batch query. Format: 'PDB_ENTITY' (e.g., '4HHB_1,4HHB_2'). Overrides pdb_id/entity_num.",
      "type": [
        "string",
        "null"
      ]
    },
    "entity_num": {
      "description": "Entity number within the PDB entry (default: 1). PDB entries can have multiple polymer entities (1, 2, 3, ...).",
      "type": [
        "integer",
        "null"
      ]
    },
    "pdb_id": {
      "description": "PDB ID (will fetch entity 1 by default). Examples: '4HHB' (hemoglobin), '1TUP' (p53-DNA). Use entity_num to specify which entity.",
      "type": [
        "string",
        "null"
      ]
    }
  },
  "required": [],
  "type": "object"
}

Examples (1)

Default RCSBGraphQL Get Polymer Entity call

public-safeinput

{}

Expected response keys: success

Anonymous-safe example. Rate-limited; no sign-in required.

Identifiers

Catalog ID: tu_RCSBGraphQL_get_polymer_entity
Tool name: RCSBGraphQL_get_polymer_entity
Added: 2026-04-30 22:47Z
Tags: tooluniverse

RCSBGraphQL Get Polymer Entity

Livelast probed 2026-04-30 23:07Z· 111msCortexa

Schema

JSON Schema the agent (or your API call) must match.

{ "properties": { "entity_ids": { "description": "Comma-separated list of entity IDs for batch query. Format: 'PDB_ENTITY' (e.g., '4HHB_1,4HHB_2'). Overrides pdb_id/entity_num.", "type": [ "string", "null" ] }, "entity_num": { "description": "Entity number within the PDB entry (default: 1). PDB entries can have multiple polymer entities (1, 2, 3, ...).", "type": [ "integer", "null" ] }, "pdb_id": { "description": "PDB ID (will fetch entity 1 by default). Examples: '4HHB' (hemoglobin), '1TUP' (p53-DNA). Use entity_num to specify which entity.", "type": [ "string", "null" ] } }, "required": [], "type": "object" }