RCSBData Get Entry

Get comprehensive structure metadata for a PDB entry from the RCSB Data API. Returns experimental method, resolution, deposition/release dates, polymer/nonpolymer entity counts, molecular weight, assembly count, space group, and unit cell dimensions. This is the direct REST endpoint for PDB entry details, complementing GraphQL-based tools. Example: '4HHB' returns hemoglobin at 1.74A by X-ray diffraction, deposited 1984-03-07, 2 polymer entities.