| Chapter title |
The Use of Psoralen Photobinding to Study Transcription-Induced Supercoiling
|
|---|---|
| Chapter number | 7 |
| Book title |
DNA Topoisomerases
|
| Published in |
Methods in molecular biology, January 2018
|
| DOI | 10.1007/978-1-4939-7459-7_7 |
| Pubmed ID | |
| Book ISBNs |
978-1-4939-7458-0, 978-1-4939-7459-7
|
| Authors |
Fedor Kouzine, Laura Baranello, David Levens |
| Abstract |
Proteins manipulating intracellular DNA necessarily impart torsional stress, which redistributes across the DNA. Overtwisting and undertwisting of the double helix result in the manifestation of positive and negative DNA supercoiling. A growing body of evidence indicates that DNA topology is an important player in the key regulatory steps of genome function, highlighting the need for biochemical techniques to detect dynamic changes in the DNA structure. Psoralen binding to DNA in vivo is proportional to the level of supercoiling, providing an excellent probe for the topological state of nuclear DNA. Here we describe a psoralen-based methodology to detect transcription-induced DNA supercoiling genome-wide. The DNA samples generated with this approach can be hybridized to microarray platforms or high-throughput sequenced to provide a topological snapshot of the whole genome. |
Mendeley readers
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 15 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 6 | 40% |
| Researcher | 3 | 20% |
| Student > Master | 2 | 13% |
| Professor > Associate Professor | 2 | 13% |
| Student > Postgraduate | 1 | 7% |
| Other | 0 | 0% |
| Unknown | 1 | 7% |
| Readers by discipline | Count | As % |
|---|---|---|
| Biochemistry, Genetics and Molecular Biology | 5 | 33% |
| Agricultural and Biological Sciences | 3 | 20% |
| Business, Management and Accounting | 1 | 7% |
| Nursing and Health Professions | 1 | 7% |
| Immunology and Microbiology | 1 | 7% |
| Other | 2 | 13% |
| Unknown | 2 | 13% |