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jun-D: a third member of the jun gene family. by K Ryder; A Lanahan; E Perez-Albuerne; D Nathans is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is jun-D: a third member of the jun gene family. about?

The protooncogene c-jun encodes a component of the transcription factor AP-1. Both murine c-jun and a related gene (jun-B) are rapidly activated in BALB/c3T3 cells by serum growth factors. We report here the cloning and analysis of a cDNA encoding a third member of the murine jun family, jun-D. The amino acid sequence encoded by jun-D has two extensive regions of homology with the other Jun proteins. One homology region includes the DNA-binding domain and sequences required for dimer formation and interaction with the Fos oncoprotein; the other includes the acidic sequence thought to be involved in gene activation. All three jun mRNAs are present in a variety of murine tissues and cell lines. In resting 3T3 cells, jun-D is expressed at a higher level compared to c-jun and jun-B, and its transcription is stimulated only slightly by serum growth factors. Thus, jun-D appears to be regulated differently than c-jun and jun-B.

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Author

K Ryder; A Lanahan; E Perez-Albuerne; D Nathans

Published

1989

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)