1XXW:
reference: Structure of the zinc-induced heterodimer of two calcium-free isoforms of phospholipase A(2) from Naja naja sagittifera at 2.7 A resolution., Jabeen T, Sharma S, Singh N, Singh RK, Verma AK, Paramasivam M, Srinivasan A, Singh TP, Acta Crystallogr D Biol Crystallogr 2005 Mar;61(Pt 3):302-8. Epub 2005 Feb, 24. PMID: 15735340

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