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Gene. 2001 Mar 7;265(1-2):37-44.

Nucleotide sequence and structure of the mouse carbonic anhydrase III gene.

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1
Laboratory of Biochemistry, National Heart Lung and Blood Institute, National Institutes of Health, 20892-0320, Bethesda, MD, USA. kimg@nhlbi.nih.gov

Abstract

At least 14 distinct isozymes of carbonic anhydrase have been identified in mammals. These enzymes catalyze the hydration of carbon dioxide and are essential for regulation of cellular pH and carbon dioxide transport. Carbonic anhydrase III is highly expressed in certain tissues, including muscle and fat where it constitutes up to 25% of the soluble protein. We cloned a cDNA encoding mouse carbonic anhydrase III. This cDNA contains 1653 bp, consisting of 79 bp in the 5' UTR, a 780 bp open reading frame, and 794 bp of the 3' UTR, including two potential polyadenylation signals. Fluorescent in situ hybridization confirmed the existence of a single copy of the gene on chromosome 3. We then isolated the genomic DNA for mouse carbonic anhydrase III and analyzed its structure. The gene consists of seven exons and six introns which span 10.5 kb. The 5' flanking region of the genomic DNA is notable for a pyrimidine rich region consisting of two dinucleotide repeats containing 23 and 20 TC pairs separated by the same 15 bp spacer.

PMID:
11255005
[Indexed for MEDLINE]
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