fos-associated cellular p39 is related to nuclear transcription factor AP-1
CellPublished 1 August 1988
Paolo Sassone‐Corsi, William W. Lamph, Mark P. Kamps, Inder M. Verma
Citations492
SJR quartileQ1
SJR score22.61
SNIP7.62
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TL;DR
It is shown that one of the fos-associated proteins, p39, is immunologically and structurally related to nuclear factor AP-1, and the sequence TGACTCA, which is the consensus minimal binding site of AP- 1, is also recognized by gel-purified p39.
Abstract
Proto-oncogene fos encodes a nuclear protein that appears to be involved in the transcriptional regulation of some genes. fos protein (p55fos) is associated with other nuclear proteins in complexes that bind to regulatory regions containing TPA-responsive promoter elements (TREs). The enhancer-binding activator protein 1 (AP-1), which is the specific binding factor of a TRE, is the product of the nuclear proto-oncogene jun. We show that one of the fos-associated proteins, p39, is immunologically and structurally related to nuclear factor AP-1. The sequence TGACTCA, which is the consensus minimal binding site of AP-1, is also recognized by gel-purified p39. In HeLa cell extracts p55fos and p39jun are associated in a nucleoprotein complex that interacts with a TRE. Cooperation between nuclear oncoproteins fos and jun is required for full activation of transcription from a TPA-responsive promoter element in transfected mammalian cells.
Keywords
MedicineBiochemistry, Genetics and Molecular Biology
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