3UGG:
reference: Crystal structure of 6-SST/6-SFT from Pachysandra terminalis, a plant fructan biosynthesizing enzyme in complex with its acceptor substrate 6-kestose., Lammens W, Le Roy K, Yuan S, Vergauwen R, Rabijns A, Van Laere A, Strelkov SV, Van den Ende W, Plant J. 2011 Nov 18. doi: 10.1111/j.1365-313X.2011.04858.x. PMID: 22098191

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