This paper is only available as a PDF. To read, Please Download here.
We examined the cooperative activity between the Sp1 and NF-kappa B/Rel sites of the human immunodeficiency virus type 1 long terminal repeat in response to phorbol 12-myristate 13-acetate (PMA) stimulation in an in vitro transcription assay. Sp1 sites alone do not account for the activation induced by PMA. When mutations in Sp1 sites were combined with mutations in the NF-kappa B/Rel sites, a dramatic reduction in PMA-induced transcriptional activity was observed. This reduction was much greater than the reduction associated with mutations involving only the NF-kappa B/Rel sites. This finding suggests that there is functional cooperation between Sp1 and NF-kappa B/Rel and that this is one possible mechanism for transcription activation by NF-kappa B/Rel. The three AP1 sites in the negative regulatory region of the long terminal repeat, however, seem to be uninvolved in the earliest moments of transcriptional activation by PMA.
REFERENCES
- Science. 1988; 239: 617-622
- Nature. 1987; 326: 435-436
- N. Engl. J. Med. 1987; 317: 278-286
- Science. 1984; 225: 59-63
- Nature. 1984; 312: 767-768
- J. Immunol. 1985; 135: 3151-3162
- Virology. 1986; 154: 249-258
- Science. 1986; 231: 850-853
- Nature. 1987; 330: 391-395
- Mol. Cell. Biol. 1987; 7: 3759-3766
- Nature. 1987; 326: 711-713
- Cell. 1985; 41: 813-823
- Science. 1987; 238: 1575-1578
- Science. 1985; 227: 538-540
- Proc. Natl. Acad. Sci. U.S.A. 1987; 84: 6845-6849
- Annu. Rev. Immunol. 1990; 8: 453-475
- Annu. Rev. Biochem. 1991; 60: 577-630
- Science. 1986; 232: 755-759
- EMBO J. 1988; 7: 2117-2129
- Proc. Natl. Acad. Sci. U.S.A. 1988; 85: 4700-4704
- J. Immunol. 1989; 143: 2745-2751
- Virology. 1989; 172: 573-583
- J. Virol. 1989; 63: 4115-4119
- J. Virol. 1990; 64: 5226-5229
- Mol. Cell. Biol. 1991; 11: 883-1893
- Mol. Cell. Biol. 1994; 14: 1582-1593
- EMBO J. 1993; 12: 3551-3558
- Oncogene. 1991; 4: 665-667
- Int. Immunol. 1990; 2: 787-794
- New Biol. 1989; 1: 83-92
- Immunology. 1990; 182: 79-87
Article info
Publication history
Published online: December 02, 1994
Identification
Copyright
© 1994 ASBMB. Currently published by Elsevier Inc; originally published by American Society for Biochemistry and Molecular Biology.
User license
Creative Commons Attribution (CC BY 4.0) | How you can reuse
Elsevier's open access license policy

Creative Commons Attribution (CC BY 4.0)
Permitted
- Read, print & download
- Redistribute or republish the final article
- Text & data mine
- Translate the article
- Reuse portions or extracts from the article in other works
- Sell or re-use for commercial purposes
Elsevier's open access license policy