2B2C:
reference: Cloning, expression, characterisation and three-dimensional structure determination of Caenorhabditis elegans spermidine synthase., Dufe VT, Luersen K, Eschbach ML, Haider N, Karlberg T, Walter RD, Al-Karadaghi S, FEBS Lett 2005 Nov 7;579(27):6037-43. Epub 2005 Oct 5. PMID: 16226262

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