How Does Photoreactivation Work?

Sarah Jenkins
Sarah Jenkins
• • 6 min read

Photoreactivation Is a Type of Dna Repair Mechanism Present in Prokaryotes, Archaea and in Many Eukaryotes. .. . Photoreactivation Process Removes the...

How Does Photoreactivation Work?

Photoreactivation is a type of DNA repair mechanism present in prokaryotes, archaea and in many eukaryotes. ... Photoreactivation process removes the pyrimidine dimers

pyrimidine dimers
Pyrimidine dimers are molecular lesions formed from thymine or cytosine bases in DNA via photochemical reactions. Ultraviolet light (UV) induces the formation of covalent linkages between consecutive bases along the nucleotide chain in the vicinity of their carbon–carbon double bonds.
› wiki › Pyrimidine_dimer
without altering other nucleotides in the DNA by using energy obtained from visible light.

What is the true about photoreactivation?

Photoreactivation (PR) is the recovery from biological damage caused by UV-C radiation (180-290 nm) or UV-B radiation (290-320 nm) by simultaneous or subsequent treatment with light of longer wavelength (PR light).

Must Read

What does photoreactivation repair fix?

DNA Replication, Repair, and Mutagenesis

A pyrimidine dimer can be repaired by photoreactivation. Photoreactivation is a light-induced (300–600 nm) enzymatic cleavage of a thymine dimer to yield two thymine monomers.

Sarah Jenkins

Sarah Jenkins

Senior Technology Editor & AI Specialist
Twitter Linkedin Github

Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.