Subject(s)
Dermatitis/veterinary , Dog Diseases/parasitology , Schistosomatidae/isolation & purification , Swimming , Trematode Infections/veterinary , Animals , Dermatitis/diagnosis , Dermatitis/parasitology , Dog Diseases/diagnosis , Dogs , Pruritus/diagnosis , Pruritus/parasitology , Pruritus/veterinary , Skin Diseases, Parasitic/diagnosis , Skin Diseases, Parasitic/veterinary , Trematode Infections/parasitologyABSTRACT
The structure which had been proposed for the pyoverdin named pseudobactin 7SR1 (Yang and Leong, 1984) differed from those of all other pyoverdins investigated so far: its peptide chain was supposedly linked to the chromophore not by an amide bond originating from its N-terminal amino acid, but rather by an ester bond involving one of the three Ser. It will be shown that the peptide chain of pseudobactin 7SR1 is actually bound to the chromophore amidically by its N-terminal Ser and that it comprises a cyclodepsipeptidic substructure with an ester bond between the C-terminal Thr and the OH-group of the second Ser in the chain.
Subject(s)
Oligopeptides/chemistry , Peptides/chemistry , Esters , Molecular Structure , Spectrum AnalysisABSTRACT
An unknown siderophore (pyoverdin) was isolated from the strain Pseudomonas sp. 2908. The structure of the pyoverdin--called PVD 2908--was elucidated by spectroscopic methods and degradation studies. Some other siderophores were identified by LC/ESI-MS-screening based on the knowledge of PVD 2908.
