Related Experiment Video
Updated: Jun 6, 2026

Investigation of Protein Recruitment to DNA Lesions Using 405 Nm Laser Micro-irradiation
Published on: March 20, 2018
Chemical investigation of light induced DNA bipyrimidine damage and repair
Korbinian Heil1, David Pearson, Thomas Carell
1Center for Integrative Protein Science CiPSM at the Department of Chemistry and Biochemistry, Ludwig-Maximilians University Munich, Butenandtstr. 5-13, D-81377 Munich, Germany.
Abstract:
In all organisms, genetic information is stored in DNA and RNA. Both of these macromolecules are damaged by many exogenous and endogenous events, with UV irradiation being one of the major sources of damage. The major photolesions formed are the cyclobutane pyrimidine dimers (CPD), pyrimidine-pyrimidone-(6-4)-photoproducts, Dewar valence isomers and, for dehydrated spore DNA, 5-(α-thyminyl)-5,6-dihydrothymine (SP). In order to be able to investigate how nature's repair and tolerance mechanisms protect the integrity of genetic information, oligonucleotides containing sequence and site-specific UV lesions are essential. This tutorial review provides an overview of synthetic procedures by which these oligonucleotides can be generated, either through phosphoramidite chemistry or direct irradiation of DNA. Moreover, a brief summary on their usage in analysing repair and tolerance processes as well as their biological effects is provided.
More Related Videos
Related Concept Videos
Overview of DNA Repair
Chemically...
Nucleotide Excision Repair
Nucleotide Excision Repair
Cells are regularly exposed to mutagens—factors in the environment that can damage DNA and generate mutations. UV radiation is one of the most common mutagens and is estimated to introduce a significant number of changes in DNA. These include bends or kinks in the structure, which can block DNA replication or transcription. If these errors are not fixed, the damage can cause mutations, which in turn can result in cancer or disease depending on which sequences are...
Long-patch Base Excision Repair
Homologous Recombination
Base-pairing and DNA Repair

