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. 1990 Jul;87(14):5440–5443. doi: 10.1073/pnas.87.14.5440

Complementary DNA encoding the human T-cell FK506-binding protein, a peptidylprolyl cis-trans isomerase distinct from cyclophilin.

N Maki 1, F Sekiguchi 1, J Nishimaki 1, K Miwa 1, T Hayano 1, N Takahashi 1, M Suzuki 1
PMCID: PMC54340  PMID: 1695378

Abstract

The recently discovered macrolide FK506 has been demonstrated to have potent immunosuppressive activity at concentrations 100-fold lower than cyclosporin A, a cyclic undecapeptide that is used to prevent rejection after transplantation of bone marrow and organs, such as kidney, heart, and liver. After the recent discovery that the cyclosporin A-binding protein cyclophilin is identical to peptidylprolyl cis-trans isomerase, a cellular binding protein for FK506 was found to be distinct from cyclophilin but to have the same enzymatic activity. In this study, we isolated a cDNA coding for FK506-binding protein (FKBP) from human peripheral blood T cells by using mixed 20-mer oligonucleotide probes synthesized on the basis of the sequence, Glu-Asp-Gly-Lys-Lys-Phe-Asp, reported for bovine FKBP. The DNA isolated contained an open reading frame encoding 108 amino acid residues. The first 40 residues of the deduced amino acid sequence were identical to those of the reported amino-terminal sequence of bovine FKBP, indicating that the DNA sequence isolated represents the gene coding for FKBP. Computer-assisted analysis of the deduced amino acid sequence indicates that FKBP exhibits no internal homology and does not have significant sequence similarity to any other amino acid sequences of known proteins, including cyclophilin. This result suggests that two catalytically similar proteins, cyclophilin and FKBP, evolved independently. In Northern blot analysis, mRNA species of approximately 1.8 kilobases that hybridized with human FKBP cDNA were detected in poly(A)+ RNAs from brain, lung, liver, and placental cells and leukocytes. Induction of Jurkat leukemic T cells with phorbol 12-myristate 13-acetate and ionomycin did not affect the level of FKBP mRNA. Southern blot analysis of human genomic DNA digested with different restriction enzymes suggests the existence of only a few copies of the DNA sequence encoding FKBP. This is in contrast to the result that as many as 20 copies of the cyclophilin gene and possible pseudogenes may be present in the mammalian genome.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Chou P. Y., Fasman G. D. Empirical predictions of protein conformation. Annu Rev Biochem. 1978;47:251–276. doi: 10.1146/annurev.bi.47.070178.001343. [DOI] [PubMed] [Google Scholar]
  2. Colombani P. M., Robb A., Hess A. D. Cyclosporin A binding to calmodulin: a possible site of action on T lymphocytes. Science. 1985 Apr 19;228(4697):337–339. doi: 10.1126/science.3885394. [DOI] [PubMed] [Google Scholar]
  3. Danielson P. E., Forss-Petter S., Brow M. A., Calavetta L., Douglass J., Milner R. J., Sutcliffe J. G. p1B15: a cDNA clone of the rat mRNA encoding cyclophilin. DNA. 1988 May;7(4):261–267. doi: 10.1089/dna.1988.7.261. [DOI] [PubMed] [Google Scholar]
  4. Haendler B., Hofer-Warbinek R., Hofer E. Complementary DNA for human T-cell cyclophilin. EMBO J. 1987 Apr;6(4):947–950. doi: 10.1002/j.1460-2075.1987.tb04843.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Handschumacher R. E., Harding M. W., Rice J., Drugge R. J., Speicher D. W. Cyclophilin: a specific cytosolic binding protein for cyclosporin A. Science. 1984 Nov 2;226(4674):544–547. doi: 10.1126/science.6238408. [DOI] [PubMed] [Google Scholar]
  6. Harding M. W., Galat A., Uehling D. E., Schreiber S. L. A receptor for the immunosuppressant FK506 is a cis-trans peptidyl-prolyl isomerase. Nature. 1989 Oct 26;341(6244):758–760. doi: 10.1038/341758a0. [DOI] [PubMed] [Google Scholar]
  7. Harding M. W., Handschumacher R. E., Speicher D. W. Isolation and amino acid sequence of cyclophilin. J Biol Chem. 1986 Jun 25;261(18):8547–8555. [PubMed] [Google Scholar]
  8. Koletsky A. J., Harding M. W., Handschumacher R. E. Cyclophilin: distribution and variant properties in normal and neoplastic tissues. J Immunol. 1986 Aug 1;137(3):1054–1059. [PubMed] [Google Scholar]
  9. Kyte J., Doolittle R. F. A simple method for displaying the hydropathic character of a protein. J Mol Biol. 1982 May 5;157(1):105–132. doi: 10.1016/0022-2836(82)90515-0. [DOI] [PubMed] [Google Scholar]
  10. Sanger F., Nicklen S., Coulson A. R. DNA sequencing with chain-terminating inhibitors. Proc Natl Acad Sci U S A. 1977 Dec;74(12):5463–5467. doi: 10.1073/pnas.74.12.5463. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Schneuwly S., Shortridge R. D., Larrivee D. C., Ono T., Ozaki M., Pak W. L. Drosophila ninaA gene encodes an eye-specific cyclophilin (cyclosporine A binding protein). Proc Natl Acad Sci U S A. 1989 Jul;86(14):5390–5394. doi: 10.1073/pnas.86.14.5390. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Siekierka J. J., Hung S. H., Poe M., Lin C. S., Sigal N. H. A cytosolic binding protein for the immunosuppressant FK506 has peptidyl-prolyl isomerase activity but is distinct from cyclophilin. Nature. 1989 Oct 26;341(6244):755–757. doi: 10.1038/341755a0. [DOI] [PubMed] [Google Scholar]
  13. Siekierka J. J., Staruch M. J., Hung S. H., Sigal N. H. FK-506, a potent novel immunosuppressive agent, binds to a cytosolic protein which is distinct from the cyclosporin A-binding protein, cyclophilin. J Immunol. 1989 Sep 1;143(5):1580–1583. [PubMed] [Google Scholar]
  14. Southern E. M. Detection of specific sequences among DNA fragments separated by gel electrophoresis. J Mol Biol. 1975 Nov 5;98(3):503–517. doi: 10.1016/s0022-2836(75)80083-0. [DOI] [PubMed] [Google Scholar]
  15. Takahashi N., Hayano T., Suzuki M. Peptidyl-prolyl cis-trans isomerase is the cyclosporin A-binding protein cyclophilin. Nature. 1989 Feb 2;337(6206):473–475. doi: 10.1038/337473a0. [DOI] [PubMed] [Google Scholar]
  16. Thomson A. W. FK-506--how much potential? Immunol Today. 1989 Jan;10(1):6–9. doi: 10.1016/0167-5699(89)90057-1. [DOI] [PubMed] [Google Scholar]
  17. Tropschug M., Nicholson D. W., Hartl F. U., Köhler H., Pfanner N., Wachter E., Neupert W. Cyclosporin A-binding protein (cyclophilin) of Neurospora crassa. One gene codes for both the cytosolic and mitochondrial forms. J Biol Chem. 1988 Oct 5;263(28):14433–14440. [PubMed] [Google Scholar]

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