What question did this study set out to answer?

The research aims to elucidate how PPARgamma represses the transcription of the iNOS gene.

Peroxisome Proliferator-Activated Receptor γ-Dependent Repression of the Inducible Nitric Oxide Synthase Gene

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The research aims to elucidate how PPARgamma represses the transcription of the iNOS gene.
Examined PPARgamma interactions with coactivators CBP and SRC-1.
Investigated the impact of single amino acid mutations on PPARgamma function.
Analyzed the role of deletion mutants in transrepression activity.
Mutations in PPARgamma that disrupt SRC-1 and CBP interactions abolished both transactivation and transrepression.
A CBP deletion mutant lacking the PPARgamma interaction domain failed to function as a coactivator.
Findings support a model where PPARgamma represses iNOS by targeting CBP through direct interaction.

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Demonstrates PPARgamma's role in repressing iNOS transcription in response to ligands, suggesting an important regulatory mechanism.

Li et al. (2000) studied this question.

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