Siderophors are ironbinding agents that transport iron into

Siderophors are iron-binding agents that transport iron into cells. Although there are structural differences among different siderophores they generally all share the property of:

A. binding extracellular ferrous iron (in its +2 oxidation state) and releasing it in the cytoplasm of the cells as ferric iron (in its +3 oxidation state).

B. binding extracellular ferric iron (in its +2 oxidation state) and releasing it in the cytoplasm of the cell as ferrous iron (in its +3 oxidation state).

C. binding extracellular ferric iron (in its +3 oxidation state) and releasing it in the cytoplam of the cell as ferrous iron (in its +2 oxidation state).

D. binding extracellular ferrous iron (in its +3 oxidation state) and releasing it in the cytoplasm of the cell as ferric iron (in its +2 oxidation state).

Solution

C. binding extracellular ferric iron (in its +3 oxidation state) and releasing it in the cytoplam of the cell as ferrous iron (in its +2 oxidation state).

They foem tight and stable complexes with ferric ion.