| 1 | Author | H. Schäfer, K. Taraz, H. Budzikiewicz | Requires cookie* |
| Title | Zur Genese der amidisch an den Chromophor von Pyoverdinen gebundenen Dicarbonsäuren |1] On the Genesis of the Dicarboxylic Acids Bound Amidically to the C hrom ophor of the Pyoverdins [1]  | ||
| Abstract | Pseudomonas strains o f the so-called fluorescent group usually produce several pyoverdins which differ only in the nature o f a dicarboxylic acid bound amidically to the chromophor. For the pyoverdins isolated from the culture medium o f Pseudomonas fluorescens 12 it is shown that succinic acid is an artefact formed by hydrolysis o f succinic amide, and that a-ketoglutaric acid is transformed enzymatically to glutamic acid. This process is reversed after the phase o f exponential growth o f the bacteria. The ratio C4-vs. C 5-acids changes with the culture time and with increasing Fe3+ content o f the medium in favor o f the latter. | ||
| Reference | Z. Naturforsch. 46c, 398 (1991); received December 21 1990/March 13 1991 | ||
| Published | 1991 | ||
| Keywords | *Pyoverdins, Biogenesis, Transformations, Citric Acid Cycle, Pseudomonas fluorescens | ||
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