4CCS:
reference: Identification and characterization of the 'missing' terminal enzyme for siroheme biosynthesis in alpha-proteobacteria., Bali S, Rollauer S, Roversi P, Raux-Deery E, Lea SM, Warren MJ, Ferguson SJ, Mol Microbiol. 2014 Apr;92(1):153-63. doi: 10.1111/mmi.12542. Epub 2014 Mar 13. PMID: 24673795

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