- 作者: Franc Pattus and Mohamed A. Abdallah
- 中文摘要:
Iron is an essential element in many biological systems, and in spite of its abundance (5% of the earth crust), its availability is dramatically limited by the very high insolubility of iron(III) at physiological pHs where the concentration of free iron(III) is less than 10-17 M, a value which is much too low to allow any possible growth to aerobic microorganisms.
Iron metabolization by the microorganisms necessitates generally the biosynthesis of low molecular weight compounds (300 to 2000 Da) called siderophores.These molecules which are generally excreted into the culture medium, chelate very strongly iron(III), solubilize it and transport it into the cells using an ATP-dependent high affinity transport system. - 英文摘要: --
- 中文關鍵字: --
- 英文關鍵字: --