Abstract
A critical function of spermidine is in the formation of hypusine, an essential post-translational modification of eukaryotic initiation factor eIF5A. In this issue of Structure, Afandor etal. (2018) determine the crystal structure of trypanosomal deoxyhypusine synthase, which shows that gene duplication and subsequent mutations provide significant differences from the mammalian equivalent exploitable for drug design.
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