Foldseek Search Structure

Search for structurally similar proteins using Foldseek. Given a PDB ID, downloads the structure from RCSB and searches against AlphaFold DB (afdb50), PDB100, or other structure databases. Returns structural alignments ranked by e-value. This is an async operation that submits a job and polls for results (typically 10-60 seconds). Example: pdb_id='4HHB' finds proteins with similar 3D fold to hemoglobin.