Scientific background: |
Cyclophilin B, PPIB, Peptidyl-prolyl cis-trans isomerase B, is an enzyme that in humans is encoded by the PPIB gene. Cyclophilins, such as Cyclophilin B, bind the immunosuppressive drug cyclosporin A (CsA) with high affinity. Somatic cell mapping of the human Cyclophilin B gene (PPIB) to chromosome 15. Cyclophilin B is a functional regulator of hepatitis C virus RNA polymerase.Cyclophilin B interacts with HCV RNA polymerase NS5B to directly stimulate its RNA binding activity. |
References: |
1. Peddada, L. B., McPherson, J. D., Law, R., Wasmuth, J. J., Youderian, P., Deans, R. J.Somatic cell mapping of the human Cyclophilin B gene (PPIB) to chromosome 15.Cytogenet. Cell Genet. 60: 219-221, 1992.
2. Price, E. R., Zydowsky, L. D., Jin, M., Baker, C. H., McKeon, F. D., Walsh, C. T.Human Cyclophilin B: a second Cyclophilin gene encodes a peptidyl-prolyl isomerase with a signal sequence.Proc. Nat. Acad. Sci. 88: 1903-1907, 1991.
3. Watashi, K., Ishii, N., Hijikata, M., Inoue, D., Murata, T., Miyanari, Y., Shimotohno, K.Cyclophilin B is a functional regulator of hepatitis C virus RNA polymerase.Molec. Cell 19: 111-122, 2005.
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