text: user10328: I know how to generally pull down information for a UniProt entry using the REST API, for example:
  https://www.uniprot.org/uniprot/?query=id:Q9UJL9&sort=score&columns=id,go(molecular%20function)&format=tab
  I'm looking at this entry as an example. I'm able to pull down most of the attributes I want with a variation of the API query above, however, I'm stuck on one part.
  For all human proteins, I want to pull down the peptide sequences that come from that protein.
  In the example above, it would be the sequences of the peptides associated with this section:
  
  Can this be done with the API or do I have to come with a scraping method for all human proteins where I (1) get the protein sequence of each entry, (2) get this table, (3) calculate where the peptides start and end from the sequence in step 1?
  I feel like this alternative will be much slower, so I want to check I'm not missing anything obvious.
  
  user1459: If downloading the complete database is not an option, you may able to use the instructions from this help page (based on the gff format for any given query):
  https://www.uniprot.org/help/download_subsequences
  
original_text: 10328: <p>I know how to generally pull down information for a UniProt entry using the REST API, for example:</p>
  <p><a href="https://www.uniprot.org/uniprot/?query=id:Q9UJL9&amp;sort=score&amp;columns=id,go(molecular%20function)&amp;format=tab" rel="nofollow noreferrer">https://www.uniprot.org/uniprot/?query=id:Q9UJL9&amp;sort=score&amp;columns=id,go(molecular%20function)&amp;format=tab</a></p>
  <p>I'm looking at <a href="https://www.uniprot.org/uniprot/Q9UBU3" rel="nofollow noreferrer">this</a> entry as an example. I'm able to pull down most of the attributes I want with a variation of the API query above, however, I'm stuck on one part.</p>
  <p>For all human proteins, I want to pull down the peptide sequences that come from that protein.</p>
  <p>In the example above, it would be the sequences of the peptides associated with this section:</p>
  <p><a href="https://i.stack.imgur.com/HcDzq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/HcDzq.png" alt="enter image description here" /></a></p>
  <p>Can this be done with the API or do I have to come with a scraping method for all human proteins where I (1) get the protein sequence of each entry, (2) get this table, (3) calculate where the peptides start and end from the sequence in step 1?
  I feel like this alternative will be much slower, so I want to check I'm not missing anything obvious.</p>
   1459: <p>If downloading the complete database is not an option, you may able to use the instructions from this help page (based on the gff format for any given query):</p>
  <p><a href="https://www.uniprot.org/help/download_subsequences" rel="nofollow noreferrer">https://www.uniprot.org/help/download_subsequences</a></p>
  