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. 1987 Oct;1(2):159-66.
doi: 10.1016/0888-7543(87)90008-5.

Cloning, expression, and sequence homologies of cDNA for human carbonic anhydrase II

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Cloning, expression, and sequence homologies of cDNA for human carbonic anhydrase II

H Murakami et al. Genomics. 1987 Oct.

Abstract

A cDNA clone for human carbonic anhydrase (CA) II was isolated from a kidney lambda gt10 library. Expression of the cDNA insert in Cos-7 cells produced an immunoprecipitable product and enzymatically active carbonic anhydrase. The cDNA insert is 1551 bp in length and contains an open reading frame which encodes a 260-amino-acid polypeptide. The deduced amino acid sequence is identical to that reported for human CA II. The protein coding region of this cDNA for human CA II shows 81 and 70% nucleotide identity with cDNAs for CA II from mouse and chick, respectively. Even the long 3'-untranslated region of the cDNA for human CA II (703 bp) is 64 and 42% identical to those of CA II from mouse and chick, showing remarkable conservation of the CA II cDNAs in amniotes. The protein coding region of the human CA II cDNA is 64 and 65% identical with those of human CA I and CA III, which are thought to have arisen from a common precursor by gene duplication.

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