Abstract
Herpesvirus saimiri contains an open reading frame called eclf2 with homology to the cellular type D cyclins. We now show that the eclf2 gene product is a novel virus-encoded cyclin (v-cyclin). The protein encoded by the v-cyclin gene of this oncogenic herpesvirus was found to have an apparent molecular size of 29 kDa in transformed cells. v-Cyclin protein was found to be associated with cdk6, a cellular cyclin-dependent kinase known to interact with cellular type D cyclins. cdk6/v-cyclin complexes strongly phosphorylated Rb fusion protein and histone H1 as substrates in vitro. Mutational analyses showed that highly conserved amino acids in the cyclin box of v-cyclin were important for association with cdk6 and for activation of cdk6 kinase activity. Thus, v-cyclin resembles cellular type D cyclins in primary sequence, in its association with cdk6, by its ability to activate protein kinase activity, and by the presence of functional cyclin box sequences. v-Cyclin exhibited a selective preference for association with cdk6 over other cyclin-dependent kinases and a high level of kinase activation. The properties of v-cyclin suggest a likely role in oncogenic transformation by this T-lymphotropic herpesvirus.
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- Albrecht J. C., Nicholas J., Biller D., Cameron K. R., Biesinger B., Newman C., Wittmann S., Craxton M. A., Coleman H., Fleckenstein B. Primary structure of the herpesvirus saimiri genome. J Virol. 1992 Aug;66(8):5047–5058. doi: 10.1128/jvi.66.8.5047-5058.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Bates S., Bonetta L., MacAllan D., Parry D., Holder A., Dickson C., Peters G. CDK6 (PLSTIRE) and CDK4 (PSK-J3) are a distinct subset of the cyclin-dependent kinases that associate with cyclin D1. Oncogene. 1994 Jan;9(1):71–79. [PubMed] [Google Scholar]
- Biesinger B., Müller-Fleckenstein I., Simmer B., Lang G., Wittmann S., Platzer E., Desrosiers R. C., Fleckenstein B. Stable growth transformation of human T lymphocytes by herpesvirus saimiri. Proc Natl Acad Sci U S A. 1992 Apr 1;89(7):3116–3119. doi: 10.1073/pnas.89.7.3116. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cullen B. R. Use of eukaryotic expression technology in the functional analysis of cloned genes. Methods Enzymol. 1987;152:684–704. doi: 10.1016/0076-6879(87)52074-2. [DOI] [PubMed] [Google Scholar]
- Desrosiers R. C., Silva D. P., Waldron L. M., Letvin N. L. Nononcogenic deletion mutants of herpesvirus saimiri are defective for in vitro immortalization. J Virol. 1986 Feb;57(2):701–705. doi: 10.1128/jvi.57.2.701-705.1986. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Dowdy S. F., Hinds P. W., Louie K., Reed S. I., Arnold A., Weinberg R. A. Physical interaction of the retinoblastoma protein with human D cyclins. Cell. 1993 May 7;73(3):499–511. doi: 10.1016/0092-8674(93)90137-f. [DOI] [PubMed] [Google Scholar]
- Dulić V., Lees E., Reed S. I. Association of human cyclin E with a periodic G1-S phase protein kinase. Science. 1992 Sep 25;257(5078):1958–1961. doi: 10.1126/science.1329201. [DOI] [PubMed] [Google Scholar]
- Ewen M. E., Sluss H. K., Sherr C. J., Matsushime H., Kato J., Livingston D. M. Functional interactions of the retinoblastoma protein with mammalian D-type cyclins. Cell. 1993 May 7;73(3):487–497. doi: 10.1016/0092-8674(93)90136-e. [DOI] [PubMed] [Google Scholar]
- Giordano A., Whyte P., Harlow E., Franza B. R., Jr, Beach D., Draetta G. A 60 kd cdc2-associated polypeptide complexes with the E1A proteins in adenovirus-infected cells. Cell. 1989 Sep 8;58(5):981–990. doi: 10.1016/0092-8674(89)90949-5. [DOI] [PubMed] [Google Scholar]
- Glotzer M., Murray A. W., Kirschner M. W. Cyclin is degraded by the ubiquitin pathway. Nature. 1991 Jan 10;349(6305):132–138. doi: 10.1038/349132a0. [DOI] [PubMed] [Google Scholar]
- Harper J. W., Adami G. R., Wei N., Keyomarsi K., Elledge S. J. The p21 Cdk-interacting protein Cip1 is a potent inhibitor of G1 cyclin-dependent kinases. Cell. 1993 Nov 19;75(4):805–816. doi: 10.1016/0092-8674(93)90499-g. [DOI] [PubMed] [Google Scholar]
- Hinds P. W., Dowdy S. F., Eaton E. N., Arnold A., Weinberg R. A. Function of a human cyclin gene as an oncogene. Proc Natl Acad Sci U S A. 1994 Jan 18;91(2):709–713. doi: 10.1073/pnas.91.2.709. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hunter T., Pines J. Cyclins and cancer. Cell. 1991 Sep 20;66(6):1071–1074. doi: 10.1016/0092-8674(91)90028-w. [DOI] [PubMed] [Google Scholar]
- Jiang W., Kahn S. M., Tomita N., Zhang Y. J., Lu S. H., Weinstein I. B. Amplification and expression of the human cyclin D gene in esophageal cancer. Cancer Res. 1992 May 15;52(10):2980–2983. [PubMed] [Google Scholar]
- Jung J. U., Desrosiers R. C. Identification and characterization of the herpesvirus saimiri oncoprotein STP-C488. J Virol. 1991 Dec;65(12):6953–6960. doi: 10.1128/jvi.65.12.6953-6960.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kaelin W. G., Jr, Pallas D. C., DeCaprio J. A., Kaye F. J., Livingston D. M. Identification of cellular proteins that can interact specifically with the T/E1A-binding region of the retinoblastoma gene product. Cell. 1991 Feb 8;64(3):521–532. doi: 10.1016/0092-8674(91)90236-r. [DOI] [PubMed] [Google Scholar]
- Kato J., Matsushime H., Hiebert S. W., Ewen M. E., Sherr C. J. Direct binding of cyclin D to the retinoblastoma gene product (pRb) and pRb phosphorylation by the cyclin D-dependent kinase CDK4. Genes Dev. 1993 Mar;7(3):331–342. doi: 10.1101/gad.7.3.331. [DOI] [PubMed] [Google Scholar]
- Kobayashi H., Stewart E., Poon R., Adamczewski J. P., Gannon J., Hunt T. Identification of the domains in cyclin A required for binding to, and activation of, p34cdc2 and p32cdk2 protein kinase subunits. Mol Biol Cell. 1992 Nov;3(11):1279–1294. doi: 10.1091/mbc.3.11.1279. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Koff A., Cross F., Fisher A., Schumacher J., Leguellec K., Philippe M., Roberts J. M. Human cyclin E, a new cyclin that interacts with two members of the CDC2 gene family. Cell. 1991 Sep 20;66(6):1217–1228. doi: 10.1016/0092-8674(91)90044-y. [DOI] [PubMed] [Google Scholar]
- Koff A., Giordano A., Desai D., Yamashita K., Harper J. W., Elledge S., Nishimoto T., Morgan D. O., Franza B. R., Roberts J. M. Formation and activation of a cyclin E-cdk2 complex during the G1 phase of the human cell cycle. Science. 1992 Sep 18;257(5077):1689–1694. doi: 10.1126/science.1388288. [DOI] [PubMed] [Google Scholar]
- Lammie G. A., Fantl V., Smith R., Schuuring E., Brookes S., Michalides R., Dickson C., Arnold A., Peters G. D11S287, a putative oncogene on chromosome 11q13, is amplified and expressed in squamous cell and mammary carcinomas and linked to BCL-1. Oncogene. 1991 Mar;6(3):439–444. [PubMed] [Google Scholar]
- Lees E. M., Harlow E. Sequences within the conserved cyclin box of human cyclin A are sufficient for binding to and activation of cdc2 kinase. Mol Cell Biol. 1993 Feb;13(2):1194–1201. doi: 10.1128/mcb.13.2.1194. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lees E., Faha B., Dulic V., Reed S. I., Harlow E. Cyclin E/cdk2 and cyclin A/cdk2 kinases associate with p107 and E2F in a temporally distinct manner. Genes Dev. 1992 Oct;6(10):1874–1885. doi: 10.1101/gad.6.10.1874. [DOI] [PubMed] [Google Scholar]
- Lew D. J., Dulić V., Reed S. I. Isolation of three novel human cyclins by rescue of G1 cyclin (Cln) function in yeast. Cell. 1991 Sep 20;66(6):1197–1206. doi: 10.1016/0092-8674(91)90042-w. [DOI] [PubMed] [Google Scholar]
- Matsushime H., Ewen M. E., Strom D. K., Kato J. Y., Hanks S. K., Roussel M. F., Sherr C. J. Identification and properties of an atypical catalytic subunit (p34PSK-J3/cdk4) for mammalian D type G1 cyclins. Cell. 1992 Oct 16;71(2):323–334. doi: 10.1016/0092-8674(92)90360-o. [DOI] [PubMed] [Google Scholar]
- Matsushime H., Roussel M. F., Ashmun R. A., Sherr C. J. Colony-stimulating factor 1 regulates novel cyclins during the G1 phase of the cell cycle. Cell. 1991 May 17;65(4):701–713. doi: 10.1016/0092-8674(91)90101-4. [DOI] [PubMed] [Google Scholar]
- Meyerson M., Enders G. H., Wu C. L., Su L. K., Gorka C., Nelson C., Harlow E., Tsai L. H. A family of human cdc2-related protein kinases. EMBO J. 1992 Aug;11(8):2909–2917. doi: 10.1002/j.1460-2075.1992.tb05360.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Meyerson M., Harlow E. Identification of G1 kinase activity for cdk6, a novel cyclin D partner. Mol Cell Biol. 1994 Mar;14(3):2077–2086. doi: 10.1128/mcb.14.3.2077. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Motokura T., Bloom T., Kim H. G., Jüppner H., Ruderman J. V., Kronenberg H. M., Arnold A. A novel cyclin encoded by a bcl1-linked candidate oncogene. Nature. 1991 Apr 11;350(6318):512–515. doi: 10.1038/350512a0. [DOI] [PubMed] [Google Scholar]
- Murray A. W., Kirschner M. W. Cyclin synthesis drives the early embryonic cell cycle. Nature. 1989 May 25;339(6222):275–280. doi: 10.1038/339275a0. [DOI] [PubMed] [Google Scholar]
- Nicholas J., Cameron K. R., Honess R. W. Herpesvirus saimiri encodes homologues of G protein-coupled receptors and cyclins. Nature. 1992 Jan 23;355(6358):362–365. doi: 10.1038/355362a0. [DOI] [PubMed] [Google Scholar]
- Nurse P. Universal control mechanism regulating onset of M-phase. Nature. 1990 Apr 5;344(6266):503–508. doi: 10.1038/344503a0. [DOI] [PubMed] [Google Scholar]
- Pines J., Hunter T. Human cyclin A is adenovirus E1A-associated protein p60 and behaves differently from cyclin B. Nature. 1990 Aug 23;346(6286):760–763. doi: 10.1038/346760a0. [DOI] [PubMed] [Google Scholar]
- Reed S. I. The role of p34 kinases in the G1 to S-phase transition. Annu Rev Cell Biol. 1992;8:529–561. doi: 10.1146/annurev.cb.08.110192.002525. [DOI] [PubMed] [Google Scholar]
- Rosenberg C. L., Kim H. G., Shows T. B., Kronenberg H. M., Arnold A. Rearrangement and overexpression of D11S287E, a candidate oncogene on chromosome 11q13 in benign parathyroid tumors. Oncogene. 1991 Mar;6(3):449–453. [PubMed] [Google Scholar]
- Sherr C. J. Mammalian G1 cyclins. Cell. 1993 Jun 18;73(6):1059–1065. doi: 10.1016/0092-8674(93)90636-5. [DOI] [PubMed] [Google Scholar]
- Smith D. B., Johnson K. S. Single-step purification of polypeptides expressed in Escherichia coli as fusions with glutathione S-transferase. Gene. 1988 Jul 15;67(1):31–40. doi: 10.1016/0378-1119(88)90005-4. [DOI] [PubMed] [Google Scholar]
- Takebe Y., Seiki M., Fujisawa J., Hoy P., Yokota K., Arai K., Yoshida M., Arai N. SR alpha promoter: an efficient and versatile mammalian cDNA expression system composed of the simian virus 40 early promoter and the R-U5 segment of human T-cell leukemia virus type 1 long terminal repeat. Mol Cell Biol. 1988 Jan;8(1):466–472. doi: 10.1128/mcb.8.1.466. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Temperley S. M., Hay R. T. Recognition of the adenovirus type 2 origin of DNA replication by the virally encoded DNA polymerase and preterminal proteins. EMBO J. 1992 Feb;11(2):761–768. doi: 10.1002/j.1460-2075.1992.tb05109.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tsai L. H., Harlow E., Meyerson M. Isolation of the human cdk2 gene that encodes the cyclin A- and adenovirus E1A-associated p33 kinase. Nature. 1991 Sep 12;353(6340):174–177. doi: 10.1038/353174a0. [DOI] [PubMed] [Google Scholar]
- Wang J., Chenivesse X., Henglein B., Bréchot C. Hepatitis B virus integration in a cyclin A gene in a hepatocellular carcinoma. Nature. 1990 Feb 8;343(6258):555–557. doi: 10.1038/343555a0. [DOI] [PubMed] [Google Scholar]
- Xiong Y., Connolly T., Futcher B., Beach D. Human D-type cyclin. Cell. 1991 May 17;65(4):691–699. doi: 10.1016/0092-8674(91)90100-d. [DOI] [PubMed] [Google Scholar]
- Xiong Y., Hannon G. J., Zhang H., Casso D., Kobayashi R., Beach D. p21 is a universal inhibitor of cyclin kinases. Nature. 1993 Dec 16;366(6456):701–704. doi: 10.1038/366701a0. [DOI] [PubMed] [Google Scholar]
- Xiong Y., Zhang H., Beach D. D type cyclins associate with multiple protein kinases and the DNA replication and repair factor PCNA. Cell. 1992 Oct 30;71(3):505–514. doi: 10.1016/0092-8674(92)90518-h. [DOI] [PubMed] [Google Scholar]