4RHF:
reference: Crystal structure of UbiX, an aromatic acid decarboxylase from the psychrophilic bacterium Colwellia psychrerythraea that undergoes FMN-induced conformational changes., Do H, Kim SJ, Lee CW, Kim HW, Park HH, Kim HM, Park H, Park H, Lee JH, Sci Rep. 2015 Feb 3;5:8196. doi: 10.1038/srep08196. PMID: 25645665

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