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Biochim Biophys Acta. 1993 Jul 28;1178(1):117-20.

Molecular cloning of a full-length cDNA encoding the catalytic subunit of human calmodulin-dependent protein phosphatase (calcineurin A alpha).

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Section on Immunology, Laboratory of Molecular and Cellular Neurobiology, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD 20852.


A complementary DNA for human calcineurin A alpha (protein phosphatase-2B), encoding a protein of 521 amino acids, was isolated from a hippocampus library. The deduced human sequence differs from that of mouse in only two amino acids, demonstrating that the structure of this catalytic subunit has been strictly conserved during mammalian evolution. Such high homology is in contrast to that seen for calcineurin A gamma, an isoform that shows only 88% identity between human and mouse (Muramatsu, T. and Kincaid, R.L. (1992) Biochem. Biophys. Res. Commun. 188, 265-271).

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