5-Hydroxypentane-2,3-dione (laurencione), a bacterial metabolite of 1-deoxy-D-threo-pentulose
Cell-free systems from the bacteria Escherichia coli and Klebsiella planticola that were incubated with 13C labeled pyruvate and D-glyceraldehyde synthesized 5-hydroxypentane-2,3-dione (laurencione) along with 1-deoxy-D-threo-pentulose (1-deoxy-D-xylulose). Both compounds showed identical labeling p...
| Autores: | , , , , , , , |
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| Formato: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 1998 |
| País: | España |
| Recursos: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/225941 |
| Acesso em linha: | https://hdl.handle.net/2445/225941 |
| Access Level: | acceso abierto |
| Palavra-chave: | Química microbiològica Química bioinorgànica Microbiological chemistry Bioinorganic chemistry |
| Resumo: | Cell-free systems from the bacteria Escherichia coli and Klebsiella planticola that were incubated with 13C labeled pyruvate and D-glyceraldehyde synthesized 5-hydroxypentane-2,3-dione (laurencione) along with 1-deoxy-D-threo-pentulose (1-deoxy-D-xylulose). Both compounds showed identical labeling patterns, indicating that the C5 skeletons were derived from the condensation of (hydroxyethyl)thiamin on D-glyceraldehyde. Conversion of [5,5-2H2]deoxyxylulose into laurencione by a cell-free system from E. coli showed that the α-dione is obtained from the pentulose by water elimination. |
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