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The deduced amino-acid sequences of ECL1 and corresponding chNHE1 amino-acids 11 to 58 are compared and aligned. The border between ECL1 and putative transmembrane domain TM1 is depicted by horizontal arrow. The W38 amino-acid residue in chNHE1 is shown as a vertical arrow. Amino acids matching the consensus sequence of anseriforms are on a gray background.
