25fa2e4e_RCSB_PDB___Help__Description
[Column Name] All PDB IDs [Description] 
Select the word "Search" in the last column to perform a BLAST search for the primary target sequence against all sequences in the PDB with a default e-value cutoff of 10. This search produces a query results list ordered by the e-value of the BLAST search.
RCSB PDB - Help
Description