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Pseudochelin A, a siderophore of Pseudoalteromonas piscicida S2040
Sonnenschein, E.C.; Stierhof, M.; Goralczyk, S.; Vabre, F.M.; Pellissier, L.; Hanssen, K.O.; de la Cruz, M.; Diaz, C.; de Witte, P.; Copmans, D.; Andersen, J.H.; Hansen, E.; Tormo, J.R.; Ebel, R.; Milne, B.F.; Deng, H.; Gram, L.; Jaspars, M.; Tabudravu, J.N. (2017). Pseudochelin A, a siderophore of Pseudoalteromonas piscicida S2040. Tetrahedron 73(18): 2633-2637. https://dx.doi.org/10.1016/j.tet.2017.03.051
In: Tetrahedron. Pergamon Press: New York; Oxford; Paris; Frankfurt. ISSN 0040-4020; e-ISSN 1464-5416, more
Peer reviewed article  

Available in  Authors 

Keyword
    Pseudoalteromonas Gauthier, Gauthier & Christen, 1995 [WoRMS]
Author keywords
    Pseudoalteromonas; Siderophore; Pseudochelin A; NMR; LCMS

Authors  Top 
  • Sonnenschein, E.C.
  • Stierhof, M.
  • Goralczyk, S.
  • Vabre, F.M.
  • Pellissier, L.
  • Hanssen, K.O.
  • de la Cruz, M.
  • Diaz, C.
  • de Witte, P., more
  • Copmans, D., more
  • Andersen, J.H.
  • Hansen, E.
  • Tormo, J.R.
  • Ebel, R.
  • Milne, B.F.
  • Deng, H.
  • Gram, L.
  • Jaspars, M.
  • Tabudravu, J.N.

Abstract
    A new siderophore containing a 4,5-dihydroimidazole moiety was isolated from Pseudoalteromonas piscicida S2040 together with myxochelins A and B, alteramide A and its cycloaddition product, and bromo- and dibromoalterochromides. The structure of pseudochelin A was established by spectroscopic techniques including 2D NMR and MS/MS fragmentation data. In bioassays selected fractions of the crude extract of S2040 inhibited the opportunistic pathogen Pseudomonas aeruginosa. Pseudochelin A displayed siderophore activity in the chrome azurol S assay at concentrations higher than 50 μM, and showed weak activity against the fungus Aspergillus fumigatus, but did not display antibacterial, anti-inflammatory or anticonvulsant activity.

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