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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Transcription Induction Integrated by Nuclear Receptor Coregulators

Transcription Induction Integrated by Nuclear Receptor Coregulators

Dammer, Eric

Paperback

Genetics

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ISBN10: 3836475324
ISBN13: 9783836475327
Publisher: Vdm Verlag
Published: Feb 22 2009
Pages: 168
Weight: 0.56
Height: 0.39 Width: 6.00 Depth: 9.00
Language: English
Studies carried out during the past decade have shown that transcription of inducible eukaryotic genes involves sequential chromatin modifications by promoter-specific transcription factors and a class of proteins called transcription coregulators. First, this work identifed important chromatin modifications and modifying complexes at the CYP17 transcription start site and nearby steroidogenic factor-1 (SF-1) binding site. Post translational modifications (PTMs) to SF-1 also occur as this transcription factor interacts with the promoter. In addition, ACTH/cAMP signaling in adrenal cortex alters SF-1-containing chromatin- modifying complexes during the early phase of transcriptional induction of CYP17. Chromatin IP (ChIP) and mammalian two hybrid experiments identified complexes which are cAMP-inducible, but sensitive to the SF-1 antagonist sphingosine. SF-1 PTMs at the ligand binding pocket opening were found to be required for CYP17 transcription. Last, certain corepressors are protein kinase A (PKA) targets and are functionally sensitive to PKA- dependent NADH accumulation. Thus, signaling, metabolism, and transcription are integrated.

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