4H5U:
reference: Structures of enzyme-intermediate complexes of yeast Nit2: insights into its catalytic mechanism and different substrate specificity compared with mammalian Nit2., Liu H, Gao Y, Zhang M, Qiu X, Cooper AJ, Niu L, Teng M, Acta Crystallogr D Biol Crystallogr. 2013 Aug;69(Pt 8):1470-81. doi:, 10.1107/S0907444913009347. Epub 2013 Jul 18. PMID: 23897470

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