1I71:
reference: High-resolution crystal structure of apolipoprotein(a) kringle IV type 7: insights into ligand binding., Ye Q, Rahman MN, Koschinsky ML, Jia Z, Protein Sci 2001 Jun;10(6):1124-9. PMID: 11369850

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).