期刊
FEBS LETTERS
卷 582, 期 28, 页码 3903-3908出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.febslet.2008.10.032
关键词
HIV-1; TFII-I; USF; RBF-2; MAPK signaling
资金
- Canadian Institutes for Health Research [MOP-77807]
RBF-2 is a factor comprised of a USF1/2 heterodimer, whose association with a highly conserved upstream element (RBEIII) on the HIV-1 LTR requires a co-factor TFII-I. We have identified specific nucleotides, immediately 3' of RBEIII that are required for stable association of TFII-I with this region of the LTR. Mutations that inhibit interaction of TFII- I with DNA also prevent stimulation of USF binding to RBEIII, and render the integrated LTR unresponsive to T cell signaling. These results demonstrate an essential role of TFII- I bound at an upstream LTR element for viral replication. (C) 2008 Federation of European Biochemical Societies. Published by Elsevier B. V. All rights reserved.
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