| 摘要 |
The present invention discloses DNAs comprising nucleotide sequences set forth as SEQ ID NO:1 or NO:3 encoding Na<+>-driven Cl-/HCO3- exchanger, proteins comprising amino acid sequences set forth as SEQ ID NO:2 or NO:4, and their homologous proteins comprising an amino acid sequence having deletion, substitution, addition or insertion amino acids, which proteins, when expressed in a cell, functions as Na<+>-driven Cl-/HCO3- exchanger, and cells in which the proteins exogenously expressed.
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