Transport of Tricarboxylic Acids in Salmonella typhimurium
AUTOR(ES)
Imai, Ko
RESUMO
Salmonella typhimurium possesses at least three inducible transport systems for the tricarboxylic acids (citric, isocitric, cis-aconitic, and tricarballylic). The first system was induced by citrate, isocitrate, or cis-aconitate, and transported citric acid and isocitric acid. The second system was also induced by the same acids as in the first system and transported cis-aconitic acid. This system required Mg2+ ions and was stable at pH 8.4 but unstable at pH 7.0. The metal ion was replaced with Sr2+ or Ca2+ ions but not with Ba2+ ions. The third system was induced by tricarballylate and transported citric acid, cis-aconitic acid, and tricarballylic acid.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=285351Documentos Relacionados
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