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温度对鼠伤寒沙门氏菌铁转运化合物生物合成的影响。

Influence of temperature on the biosynthesis of iron transport compounds by Salmonella typhimurium.

作者信息

Garibaldi J A

出版信息

J Bacteriol. 1972 Apr;110(1):262-5. doi: 10.1128/jb.110.1.262-265.1972.

Abstract

The biosynthesis of phenolate iron transport compounds by Salmonella typhimurium Tm-1 is temperature-sensitive. As the temperature of incubation is raised from 31.0 to 36.9 C, the organism excretes less iron transport compound into the medium. The organism in unable to grow at 40.3 C on a 1% succinatesalts medium unless supplemented with such iron transport compounds. The iron requirement for maximum cell yields on this medium is 0.10 mug/ml. The biosynthesis of phenolate iron transport compounds is suppressed at iron concentrations greater than 3.0 mug/ml.

摘要

鼠伤寒沙门氏菌Tm-1对酚盐铁转运化合物的生物合成是温度敏感的。随着培养温度从31.0℃升高到36.9℃,该生物体向培养基中分泌的铁转运化合物减少。除非补充此类铁转运化合物,否则该生物体无法在1%琥珀酸盐培养基上于40.3℃生长。该培养基上实现最大细胞产量所需的铁量为0.10微克/毫升。当铁浓度大于3.0微克/毫升时,酚盐铁转运化合物的生物合成受到抑制。

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