text: user14948: I would like to download all the PDB files which have crystal structure information in them. But the query builder seems to require me to enter the PDB IDs manually.
  Is there a way to get a list of those PDB IDs at RCSB PDB?
  Thanks in advance.
  
  user10049: running the query builder at RCS PDB against id with space group (so crystal info) I get:
  
  more about RCSB PDB web services here: https://www.rcsb.org/docs/programmatic-access/web-services-overview
  and the search API here: https://search.rcsb.org/index.html#search-api  think you should query for entries where symmetry.pdbx_full_space_group_name_H_M exists (https://search.rcsb.org/structure-search-attributes.html and ask to have returned entry.id (a list of in this case)
  
  user6322: 
  Comment migrated as answer as it inadvertently may have been an answer.
  
  If the sole records in a PDB file that are of interest are EXPDTA,CRYST1 ORIGX1``,ORIGX2, ORIGX3,SCALE1,SCALE2,SCALE3, the in the FTP site the file ftp.wwpdb.org/pub/pdb/derived_data/index/crystal.idx  contains this information in a tabular format.
  If an extra piece of metadata is sought, such as some of the refinement details in REMARK lines, then the PDBe API can help. In particular, the experiment entrypoint (example) is of interest.
  
original_text: 14948: <p>I would like to download all the PDB files which have crystal structure information in them. But the query builder seems to require me to enter the PDB IDs manually.</p>
  <p>Is there a way to get a list of those PDB IDs at RCSB PDB?</p>
  <p>Thanks in advance.</p>
   10049: <p>running the query builder at RCS PDB against id with space group (so crystal info) I get:</p>
  <p><a href="https://i.stack.imgur.com/S3rGv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/S3rGv.png" alt="172456 hits" /></a></p>
  <p>more about RCSB PDB web services here: <a href="https://www.rcsb.org/docs/programmatic-access/web-services-overview" rel="nofollow noreferrer">https://www.rcsb.org/docs/programmatic-access/web-services-overview</a></p>
  <p>and the search API here: <a href="https://search.rcsb.org/index.html#search-api" rel="nofollow noreferrer">https://search.rcsb.org/index.html#search-api</a>  think you should query for entries where <code>symmetry.pdbx_full_space_group_name_H_M</code> exists (<a href="https://search.rcsb.org/structure-search-attributes.html" rel="nofollow noreferrer">https://search.rcsb.org/structure-search-attributes.html</a> and ask to have returned entry.id (a list of in this case)</p>
   6322: <blockquote>
  <p>Comment migrated as answer as it inadvertently may have been an answer.</p>
  </blockquote>
  <p>If the sole records in a PDB file that are of interest are <code>EXPDTA</code>,<code>CRYST1</code> ORIGX1``,<code>ORIGX2</code>, <code>ORIGX3</code>,<code>SCALE1</code>,<code>SCALE2</code>,<code>SCALE3</code>, the in the <a href="http://wwpdb.org/ftp/pdb-ftp-sites" rel="nofollow noreferrer">FTP site</a> the file ftp.wwpdb.org/pub/pdb/derived_data/index/crystal.idx  contains this information in a tabular format.</p>
  <p>If an extra piece of metadata is sought, such as <strong>some of</strong> the refinement details in <code>REMARK</code> lines, then <a href="https://www.ebi.ac.uk/pdbe/api/doc/" rel="nofollow noreferrer">the PDBe API can help</a>. In particular, the <code>experiment</code> entrypoint (<a href="https://www.ebi.ac.uk/pdbe/api/pdb/entry/experiment/451c" rel="nofollow noreferrer">example</a>) is of interest.</p>
  