3APN:
reference: Structural and biochemical analyses of the human PAD4 variant encoded by a functional haplotype gene., Horikoshi N, Tachiwana H, Saito K, Osakabe A, Sato M, Yamada M, Akashi S, Nishimura Y, Kagawa W, Kurumizaka H, Acta Crystallogr D Biol Crystallogr. 2011 Feb;67(Pt 2):112-8. Epub 2011, Jan 8. PMID: 21245532

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