4X0K:
reference: Structural and biophysical characterization of an epitope-specific engineered Fab fragment and complexation with membrane proteins: implications for co-crystallization., Johnson JL, Entzminger KC, Hyun J, Kalyoncu S, Heaner DP Jr, Morales IA, Sheppard A, Gumbart JC, Maynard JA, Lieberman RL, Acta Crystallogr D Biol Crystallogr. 2015 Apr;71(Pt 4):896-906. doi:, 10.1107/S1399004715001856. Epub 2015 Mar 27. PMID: 25849400

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