6B4M:
reference: Structural characterization of a novel monotreme-specific protein with antimicrobial activity from the milk of the platypus., Newman J, Sharp JA, Enjapoori AK, Bentley J, Nicholas KR, Adams TE, Peat TS, Acta Crystallogr F Struct Biol Commun. 2018 Jan 1;74(Pt 1):39-45. doi:, 10.1107/S2053230X17017708. Epub 2018 Jan 1. PMID: 29372906

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