4M34:
reference: A histidine aspartate ionic lock gates the iron passage in miniferritins from Mycobacterium smegmatis., Williams SM, Chandran AV, Vijayabaskar MS, Roy S, Balaram H, Vishveshwara S, Vijayan M, Chatterji D, J Biol Chem. 2014 Apr 18;289(16):11042-58. doi: 10.1074/jbc.M113.524421. Epub, 2014 Feb 26. PMID: 24573673

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