Date published: 2026-4-23

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DNA Ligase IV Inhibitors

DNA Ligase IV is a specialized enzyme in the cellular machinery that plays a pivotal role in the repair of double-strand breaks (DSBs) in DNA. This type of repair is known as non-homologous end joining (NHEJ), and it is a fundamental process ensuring the maintenance of genomic integrity. NHEJ is especially crucial for the repair of DSBs that arise during various metabolic processes or due to exogenous factors like radiation. DNA Ligase IV works by sealing the broken ends of the DNA, thus completing the NHEJ process. Given its significant function, the activity and regulation of DNA Ligase IV are of immense scientific interest. The inhibitors of DNA Ligase IV represent a category of molecules that can specifically halt or attenuate the action of this enzyme. These inhibitors have been studied to understand the intricate dynamics of the NHEJ pathway and to gain insights into the DNA repair mechanism at a molecular level. They offer a tool to dissect the NHEJ process in detail, allowing researchers to observe what happens in the absence or reduction of DNA Ligase IV activity. By studying the inhibitors and their interaction with the enzyme, scientists can unravel the complexities of the DNA repair mechanism, its key players, and its role in ensuring genomic stability. In essence, DNA Ligase IV inhibitors serve as valuable research tools, illuminating our understanding of one of nature's most intricate repair systems.
Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

L189

64232-83-3sc-295349
sc-295349A
10 mg
50 mg
$224.00
$765.00
1
(1)

L189 (CAS 64232-83-3) is a chemical compound that acts as an inhibitor of DNA Ligase IV. DNA Ligase IV is an essential enzyme involved in the repair of double-strand breaks in DNA through the non-homologous end joining (NHEJ) pathway. By inhibiting this enzyme, L189 can potentially disrupt the DNA repair process.

RAD51 Inhibitor B02

1290541-46-6sc-507533
10 mg
$95.00
(0)

B02 is a DNA Ligase IV inhibitor that obstructs its interaction with XRCC4, a protein essential for NHEJ. By doing so, it hampers the DNA repair mechanism.