A Novel Azotobactin From Azotobacter Vinelandii

Abstract
From cultures of Azotobacter vinelandii DSM 87 (ATCC 12837) an azotobactin was isolated and its structure was elucidated by MS, NMR, and chemical degradation studies. This is the second representative of its class of bacterial siderophores so far encountered. of special interest also in respect of the related Pseudomonas siderophores (pyoverdins) is a novel hydroxamic acid unit (N5-hydroxy-N5-hydroxybutyryl-ornithine) as one of the binding sites for Fe3+.