Thymine Dimers
Thymine Dimers - Related Videos
10:39
Visualization of ATP Synthase Dimers in Mitochondria by Electron Cryo-tomography
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Cited by 43 •
2014
We present a protocol of how to collect and process electron cryo-tomograms of whole mitochondria. The technique provides detailed insights into the structure, function, and organization of large membrane protein complexes in native biological membranes.
10:44
Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
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Cited by 5 •
2019
We present protocols for the isolation of stable heterocyclic carbenes. The synthesis of a cyclic (alkyl)(amino) carbene (CAAC) and an N-heterocyclic carbene (NHC) is demonstrated using filter cannulas and Schlenk technique. We furthermore present the synthesis of the related oxygen-sensitive, electron-rich mixed “Wanzlick dimer” and the reduced stable organic radical.
08:52
Chemical Dimerization-Induced Protein Condensates on Telomeres
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Cited by 10 •
2021
This protocol illustrates a chemically induced protein dimerization system to create condensates on chromatin. The formation of promyelocytic leukemia (PML) nuclear body on telomeres with chemical dimerizers is demonstrated. Droplet growth, dissolution, localization and composition are monitored with live cell imaging, immunofluorescence (IF) and fluorescence in situ hybridization (FISH).
08:57
Native Polyacrylamide Gel Electrophoresis Immunoblot Analysis of Endogenous IRF5 Dimerization
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Cited by 1 •
2019
A native Western blot method for analyzing endogenous interferon regulatory factor 5 dimerization in the CAL-1 plasmacytoid dendritic cell line is described. This protocol can be applied to other cell lines as well.
09:07
Detecting the Ligand-binding Domain Dimerization Activity of Estrogen Receptor Alpha Using the Mammalian Two-Hybrid Assay
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Cited by 5 •
2018
We present a method for analyzing the 4-hydroxy-tamoxifen-dependent estrogen receptor alpha ligand-binding domain dimerization activity using the mammalian two-hybrid assay.
FAQs
The immediate problem is geometric as well as chemical: the covalent linkage changes the local shape of the DNA helix. That distortion can obstruct DNA polymerases during replication and interfere with transcription. Consequently, the lesion can affect both accurate copying of genetic information and the production of RNA, making it relevant to genome stability.
Using the undamaged DNA strand as a template is essential because it supplies the sequence information needed to restore the damaged region. Nucleotide excision repair therefore does more than remove an abnormal structure: it supports accurate reconstruction of the DNA sequence. This template-based logic explains why repair can preserve genetic information after UV exposure.
Thymine dimers can influence mutation formation when their presence disrupts normal DNA processing. A polymerase blocked at a lesion cannot proceed normally during replication, while interference with transcription can alter the handling of genetic information. Studying these effects connects a specific UV-associated DNA injury with broader questions about how cells maintain genome stability and how mutations arise.
At the repair level, the central workflow has two linked stages: nucleotide excision repair removes the damaged DNA segment, and the sequence is restored using the undamaged strand as a template. This sequence converts recognition of a helix-distorting lesion into recovery of the original information, providing a framework for analyzing cellular responses to UV-induced DNA damage.
Sunscreen and other photoprotective strategies are relevant because reducing UV exposure can reduce the initiating condition that produces these lesions. In biology, this creates a direct connection between molecular damage and prevention: fewer UV insults should lessen the burden of lesions that cells must repair. The topic therefore links DNA repair research with skin-protection practices.
Thymine dimers provide a molecular link between UV radiation and skin cancer research. Their formation helps researchers examine how environmental exposure damages DNA, how repair restores sequence information, and how mutation-related outcomes relate to genome stability. They are therefore studied both as specific DNA lesions and as indicators of challenges faced by cellular DNA damage responses.