2HCZ:
reference: Crystal structure and activities of EXPB1 (Zea m 1), a beta-expansin and group-1 pollen allergen from maize., Yennawar NH, Li LC, Dudzinski DM, Tabuchi A, Cosgrove DJ, Proc Natl Acad Sci U S A. 2006 Oct 3;103(40):14664-71. Epub 2006 Sep 19. PMID: 16984999

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