Hello, Starting from an AlphaFold prediction, I refined a model against a map with ISOLDE. I trimmed the segments not supported by any density. The resulting mmCIF file that I saved now opens with this warning: Unknown polymer entity '1' near line 187 Missing or incomplete entity_poly_seq table. Inferred polymer connectivity. Displaying the sequence of this chain shows the correct numbering (with jumps in numbering according to missing segments in the structure), but the sequence of the missing structure segments is not displayed. When I open the fasta file containing the full-length sequence, the sequence gets automatically associated to the structure, and the sequence viewer annotates the segments with missing structure correctly. I would like to save this full-length sequence in my mmCIF file so the full-length sequence with annotated missing structure segments shows up next time I open this file. But when I try to save at this point, I get the following notice: Not saving entity_poly_seq for non-authoritative sequences The documentation for "save" and "sequence" didn't help. How can I make this sequence "authoritative" and save it into my mmCIF file? Thank you in advance, Guillaume När du har kontakt med oss på Uppsala universitet med e-post så innebär det att vi behandlar dina personuppgifter. För att läsa mer om hur vi gör det kan du läsa här: http://www.uu.se/om-uu/dataskydd-personuppgifter/ E-mailing Uppsala University means that we will process your personal data. For more information on how this is performed, please read here: http://www.uu.se/en/about-uu/data-protection-policy