| 4XGC: reference: Crystal structure of the eukaryotic origin recognition complex., Bleichert F, Botchan MR, Berger JM, Nature. 2015 Mar 19;519(7543):321-6. doi: 10.1038/nature14239. Epub 2015 Mar 11. PMID: 25762138 |
This OCA 
Structure page
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(documentation).