1PUO:
reference: The crystal structure of the major cat allergen Fel d 1, a member of the secretoglobin family., Kaiser L, Gronlund H, Sandalova T, Ljunggren HG, van Hage-Hamsten M, Achour A, Schneider G, J Biol Chem 2003 Sep 26;278(39):37730-5. Epub 2003 Jul 8. PMID: 12851385

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