4W4H:
reference: Structures of Escherichia coli tryptophanase in holo and `semi-holo' forms., Kogan A, Raznov L, Gdalevsky GY, Cohen-Luria R, Almog O, Parola AH, Goldgur Y, Acta Crystallogr F Struct Biol Commun. 2015 Mar 1;71(Pt 3):286-90. doi:, 10.1107/S2053230X15000850. Epub 2015 Feb 19. PMID: 25760702

This OCA Structure page
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