3ZOB:
reference: Investigation of homeodomain membrane translocation properties: insights from the structure determination of engrailed-2 homeodomain in aqueous and membrane-mimetic environments., Carlier L, Balayssac S, Cantrelle FX, Khemtemourian L, Chassaing G, Joliot A, Lequin O, Biophys J. 2013 Aug 6;105(3):667-78. doi: 10.1016/j.bpj.2013.06.024. PMID: 23931315

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