Abstract
We investigated DNA-protein-interactions occurring in the promoter region of c-fos using two-dimensional electrophoresis and south-western-blotting. When nuclear extracts from the human glioblastoma cell line HeRoSV were tested for their DNA-binding behaviour to a 650 bp-fragment within the promoter region of c-fos, we found 4 proteins designated as 120/6.6, 75/5.4, 65/6.4 55/5.0 interacting with this fragment. An additional protein 60/6.0 was detected by using a digoxygenine-labelled probe. These observations let us to assume that beside the well characterized SRF and FOS-JUN proteins additional factors recognize the promoter sequence and may play a role in c-fos regulation.
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Abbreviations
- DRE:
-
direct repeat element
- DSE:
-
dyad symmetry element
- DTE:
-
Dithiothreitol
- EGF:
-
Epidermal growth factor
- FCS:
-
fetal calf serum
- PA:
-
polyacrylamide
- PMSF:
-
Phenylmethylsulfonyl fluoride
- SDS:
-
Sodiumdodecylsulfate
- SRF:
-
serum response factor
- TCF:
-
ternary complex factor
- TPA:
-
12-O-tetradecanoyl phorbol-13-acetate
- 2D:
-
two-dimensional
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Radtke, J., Dooley, S., Blin, N. et al. A set of 4 nuclear proteins binds to a DNA sequence within the FOS promoter region. Mol Biol Rep 15, 87–92 (1991). https://doi.org/10.1007/BF00364844
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DOI: https://doi.org/10.1007/BF00364844