2LVL:
reference: The First Structure of a Lantibiotic Immunity Protein, SpaI from Bacillus subtilis, Reveals a Novel Fold., Christ NA, Bochmann S, Gottstein D, Duchardt-Ferner E, Hellmich UA, Dusterhus S, Kotter P, Guntert P, Entian KD, Wohnert J, J Biol Chem. 2012 Oct 12;287(42):35286-98. doi: 10.1074/jbc.M112.401620. Epub, 2012 Aug 17. PMID: 22904324

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