3O6Q:
reference: The structure and interactions of SpoIISA and SpoIISB, a toxin-antitoxin system in Bacillus subtilis., Florek P, Levdikov VM, Blagova E, Lebedev AA, Skrabana R, Resetarova S, Pavelcikova P, Barak I, Wilkinson AJ, J Biol Chem. 2010 Dec 7. PMID: 21147767

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