Extracellular ferrireductase activity of K562 cells is coupled to transferrin-independent iron transport.

@article{Inman1994ExtracellularFA,
  title={Extracellular ferrireductase activity of K562 cells is coupled to transferrin-independent iron transport.},
  author={R S Inman and Marie Coughlan and Marianne Wessling-Resnick},
  journal={Biochemistry},
  year={1994},
  volume={33 39},
  pages={11850-7}
}
The reduction of Fe3+ to Fe2+ has been established to play a critical role in the uptake of iron by many organisms. Recently, a mechanism of iron transport in the absence of transferrin (Tf) was described for the human K562 cell line and a role for ferrireductase activity was implicated in this process as well [Inman, R. S., & Wessling-Resnick, M. (1993) J. Biol. Chem. 268, 8521-8528]. The present report characterizes the extracellular reduction of ferricyanide to ferrocyanide catalyzed by K562… CONTINUE READING

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