Transport, Storage, and Homeostasis of Metal Ions

摘要: Publisher Summary This chapter focuses on the transport, storage and homeostasis of metal ions in bacteria, fungi, plants, mammals. The assimilation metals unicellular bacteria does not require their transport to other cell types. Iron from siderophores, ferric citrate, lactoferrin transferrin is directly available, whereas haem iron released by action oxygenase. Both copper zinc stored cysteine-rich proteins, called metallothioneins. expression these sequestering, low-molecular weight, often induced both monovalent Cu(I), divalent Zn(II), Ag(I) Cd(II). metabolism has been most intensively studied S. cerevisiae, all fungi. photoreduction xylem-transported carboxylates, like an important driving force reduction shoots: thereafter distribution leaves probably mediated again NA–iron complex. In involves, as mammals, some degree post-transcriptional control transporters. Zinc involves transcriptional post-translational regulatory mechanisms. under normal physiological conditions, transported serum transferrin. About a quarter total body macrophages hepatocytes reserve, which can be readily mobilized for red blood formation. regulation cellular large controlled at level translation mRNAs proteins involved metabolism.