| Literature DB >> 28695514 |
Maggie H Chassé1,2, Uma M Muthurajan1, Nicholas J Clark3, Michael A Kramer4, Srinivas Chakravarthy5, Thomas Irving5, Karolin Luger6,7,8.
Abstract
Poly (ADP-Ribose) Polymerase I (PARP-1) is a first responder to DNA damage and participates in the regulation of gene expression. The interaction of PARP-1 with chromatin and DNA is complex and involves at least two different modes of interaction. In its enzymatically inactive state, PARP-1 binds native chromatin with similar affinity as it binds free DNA ends. Automodification of PARP-1 affects interaction with chromatin and DNA to different extents. Here we describe a series of biochemical and biophysical techniques to quantify and dissect the different binding modes of PARP-1 with its various substrates. The techniques listed here allow for high throughput and quantitative measurements of the interaction of different PARP-1 constructs (inactive and automodified) with chromatin and DNA damage models.Entities:
Keywords: Analytical ultracentrifugation; Atomic force microscopy; Electrophoretic mobility shift assays; HI-FI FRET; Job plot; Multi-angle light scattering; PARP-1; Small angle X-ray scattering
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Year: 2017 PMID： 28695514 PMCID： PMC5695667 DOI： 10.1007/978-1-4939-6993-7_16
Source DB: PubMed Journal: Methods Mol Biol ISSN： 1064-3745