The transcription process in eukaryotic cells is controlled by the C-terminal domain of RNA polymerase II through its post-translational modification states. However enzymes that recognize the same phosphorylation site in CTD can lead to different transcriptional outcomes. To address the central question that how gene-specific regulation was achieved by CTD regulatory enzymes;we investigate the structure function mechanism of Scp, a human CTD Ser5 phosphatase that functions as a co-repressor for neuronal gene expression. By comparing gene-specific CTD phosphatase Scp, to general-transcription CTD phosphatase Ssu72, we will test two different yet not mutually exclusive hypotheses to explain the differentiated transcription outcomes: molecular targeting and gene-specific CTD code. Finally, we will identify neuronal genes that are subject to Scp regulation and develop chemical tools to investigate the gene expression cascade during neurogenesis. The research breaks new ground in understanding CTD-directed transcription regulation. The chemical compounds developed in this study will become powerful tools to understand the biological mechanism of neuronal stem cell differentiation. Finally, the study of Scp-directed gene silencing in various cell types pave the way to establish if Scp can be a valid drug target for neurodegenerative diseases such as Alzheimer's.

Public Health Relevance

In this proposal, we target a human neuronal silencing protein to promote neuron regeneration. We investigate the molecular mechanisms for the regulation of this enzyme in order to achieve selective inactivation to direct neurogenesis. The compounds developed in this research will become powerful tool to study neuron development and eventually greatly benefit patients with neurodegenerative diseases such as Alzheimer's.

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Research Project (R01)
Project #
1R01GM104896-01A1
Application #
8578261
Study Section
Macromolecular Structure and Function E Study Section (MSFE)
Program Officer
Barski, Oleg
Project Start
2013-08-01
Project End
2018-04-30
Budget Start
2013-08-01
Budget End
2014-04-30
Support Year
1
Fiscal Year
2013
Total Cost
$264,894
Indirect Cost
$74,894
Name
University of Texas Austin
Department
Chemistry
Type
Schools of Arts and Sciences
DUNS #
170230239
City
Austin
State
TX
Country
United States
Zip Code
78712
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