| 1CQA: reference: The molecular basis for allergen cross-reactivity: crystal structure and IgE-epitope mapping of birch pollen profilin., Fedorov AA, Ball T, Mahoney NM, Valenta R, Almo SC, Structure 1997 Jan 15;5(1):33-45. PMID: 9016715 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).