title: Chrysobactin siderophores produced by Dickeya chrysanthemi EC16.
abstract: The plant pathogen Dickeya chrysanthemi EC16 (formerly known as Petrobacterium chrysanthemi EC16 and Erwinia chrysanthemi EC16) was found to produce a new triscatecholamide siderophore, cyclic trichrysobactin, the related catecholamide compounds, linear trichrysobactin and dichrysobactin, and the previously reported monomeric siderophore unit, chrysobactin. Chrysobactin is comprised of L-serine, D-lysine, and 2,3-dihydroxybenzoic acid (DHBA). Trichrysobactin is a cyclic trimer of chrysobactin joined by a triserine lactone backbone. The chirality of the ferric complex of cyclic trichrysobactin is found to be in the Λ configuration, similar to Fe(III)-bacillibactin, which contains a glycine spacer between the DHBA and L-threonine components and is opposite that of Fe(III)-enterobactin, which contains DHBA ligated directly to L-serine.
authors.affiliation: Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106-9510, United States.
authors.forename: Moriah
authors.initials: M
authors.lastname: Sandy
authors.forename: Alison
authors.initials: A
authors.lastname: Butler
mesh_terms: D016974:Dickeya chrysanthemi / Q000737:chemistry*; D004151:Dipeptides / Q000737:chemistry* / Q000302:isolation & purification*; D015394:Molecular Structure; D010935:Plant Diseases / Q000382:microbiology; D017262:Siderophores / Q000737:chemistry* / Q000302:isolation & purification*
chemical_list: D004151:Dipeptides; D017262:Siderophores; C058543:chrysobactin