1. Si-enterobactin from the endophytic Streptomyces sp. KT-S1-B5--a potential silicon transporter in Nature?
- Author
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Kenla TJ, Tatong MD, Talontsi FM, Dittrich B, Frauendorf H, and Laatsch H
- Subjects
- Biological Transport, Crystallography, X-Ray, Enterobactin chemistry, Ligands, Molecular Conformation, Piper microbiology, Plant Roots microbiology, Silicon chemistry, Enterobactin metabolism, Silicon metabolism, Streptomyces metabolism
- Abstract
Si-enterobactin (2a), a hexacoordinated complex of the siderophore enterobactin (2b) with silicon as the central atom, was isolated from an endophytic Streptomyces sp. occurring in Piper guinensis roots. The structure and absolute configuration were determined from NMR and MS data, and by X-ray diffraction. The orientation of the molecule along the pseudo-3-fold axis shows that the coordination environment of the silicon atom complexed with three bidentate ligands is Δ. We assume that 2a or related complexes may be involved in the transport of silicon in plants, diatoms, or other silicon-dependent organisms.
- Published
- 2013
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