5OXX:
reference: Structural Insights into Subunits Assembly and the Oxyester Splicing Mechanism of Neq pol Split Intein., Gordo V, Aparicio D, Perez-Luque R, Benito A, Vilanova M, Uson I, Fita I, Ribo M, Cell Chem Biol. 2018 Jul 19;25(7):871-879.e2. doi:, 10.1016/j.chembiol.2018.04.008. Epub 2018 May 10. PMID: 29754955

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