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EMBO J. 1987 Apr;6(4):947-50.

Complementary DNA for human T-cell cyclophilin.


Complementary DNA encoding human cyclophilin, a specific cyclosporin A-binding protein, has been isolated from the leukemic T-cell line Jurkat and sequenced. Comparison of the deduced amino acid sequence with the previously determined sequence of bovine thymus cyclophilin reveals only three differences: an additional amino acid at the carboxy terminus end and two internal changes. RNA transfer blot analysis indicates an mRNA size of approximately 1 kb for human T-cell cyclophilin. Phytohaemagglutinin and phorbol myristate acetate induction of T cells treated or not with cyclosporin A affects only marginally the level of cyclophilin mRNA. Southern blot analysis of human genomic DNA digested with different restriction enzymes strongly suggests the existence of a multigene family for cyclophilin.

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