Spectroscopic approaches for studies of site-specific DNA base and backbone 'breathing' using exciton-coupled dimer-labeled DNA

Autor:	Marcus, Andrew H., Matsika, Spiridoula, Heussman, Dylan, Sorour, Mohammed I., Maurer, Jack, Albrecht, Claire S., Enkhbaatar, Lulu, Herbert, Patrick, Kistler, Kurt A., von Hippel, Peter H.
Rok vydání:	2024
Předmět:	Physics - Biological Physics Quantitative Biology - Biomolecules
Druh dokumentu:	Working Paper
Popis:	DNA regulation and repair processes require direct interactions between proteins and DNA at specific sites. Local fluctuations of the sugar-phosphate backbones and bases of DNA (a form of DNA "breathing") play a central role in such processes. Here we review the development and application of novel spectroscopic methods and analyses - both at the ensemble and single-molecule levels - to study structural and dynamic properties of exciton-coupled cyanine and fluorescent nucleobase analogue dimer-labeled DNA constructs at key positions involved in protein-DNA complex assembly and function. The exciton-coupled dimer probes act as "sensors" of the local conformations adopted by the sugar-phosphate backbones and bases immediately surrounding the dimer probes. These methods can be used to study the mechanisms of protein binding and function at these sites. Comment: Preprint of invited book chapter
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2403.16251 Zobrazit plný text záznamu View this record from Arxiv