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Translesion DNA Polymerases

Translesion DNA Polymerases

Translesion (TLS) polymerases rescue stalled DNA polymerases at sites of damaged bases by replacing the replicative polymerase and installing a nucleotide across the damaged site. Doing so, TLS allows additional time for the cell to repair the damage before resuming regular DNA replication.
TLS polymerases are found in all three domains of life - archaea, bacteria, and eukaryotes. Of the different classes of TLS polymerases, members of the Y family are fitted with specialized structures that...

Nucleotide Excision Repair

Nucleotide Excision Repair

Restarting Stalled Replication Forks

Restarting Stalled Replication Forks

DNA replication is initiated at sites containing predefined DNA sequences known as origins of replication. DNA is unwound at these sites by the minichromosome maintenance (MCM) helicase and other factors such as Cdc45 and the associated GINS complex.The unwound single strands are protected by replication protein A (RPA) until DNA polymerase starts synthesizing DNA at the 5’ end of the strand in the same direction as the replication fork. To prevent the replication fork from falling apart,...

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Related Experiment Video

Updated: Jan 30, 2026

Circumscribed Capsular Infarct Modeling Using a Photothrombotic Technique

Circumscribed Capsular Infarct Modeling Using a Photothrombotic Technique

Published on: June 2, 2016

Asymptomatic circumscribed round lesion on the buttock

Fábio Barroso¹, Susana Machado², Manuela Selores²

¹Department of Pediatrics, Centro Materno-Infantil do Norte Centro Hospitalar e Universitário do Porto, Porto, Portugal.

Journal of Paediatrics and Child Health

|January 15, 2019

Summary

No abstract available in PubMed .

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