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Molecular identification of Na+–H+ exchanger isoforms (NHE2) in the gills of the euryhaline teleost Fundulus heteroclitus

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In the current study, reverse-transcription polymerase chain reaction (RT-PCR) and rapid amplification of cDNA ends (RACE) PCR were used to clone full-length putative Na+–H+ exchanger isoforms (NHE2a) cDNA from the gills of Fundulus heteroclitus. The 2480 bp cDNA includes a coding region for a protein that shows a 57% amino acid homology to rabbit NHE2. These sequences allowed data mining of available fish genome data, which revealed at least three NHE2 subtypes in some teleost species.

Keywords: Na+–H+ exchanger; acid–base regulation; gills; teleost

Document Type: Research Article


Affiliations: Department of Biology, Georgia Southern University, Statesboro, GA 30460, U.S.A.

Publication date: 2010-02-01

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