AtHMA1 contributes to the detoxification of excess Zn(II) in Arabidopsis.

  title={AtHMA1 contributes to the detoxification of excess Zn(II) in Arabidopsis.},
  author={Yu-Young Kim and Hyunju Choi and Shoji Segami and Hyung-Taeg Cho and Enrico Martinoia and Masayoshi Maeshima and Youngsook Lee},
  journal={The Plant journal : for cell and molecular biology},
  volume={58 5},
AtHMA1 is a member of the heavy metal-transporting ATPase family. It exhibits amino acid sequence similarity to two other Zn(II) transporters, AtHMA2 and AtHMA4, and contains poly-His motifs that are commonly found in Zn(II)-binding proteins, but lacks some amino acids that are typical for this class of transporters. AtHMA1 localizes to the chloroplast envelope. In comparison with wild-type plants, we observed a more pronounced sensitivity in the presence of high Zn(II) concentrations, and… CONTINUE READING


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