Date published: 2025-11-24

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Sgs1 Inhibitors

Sgs1, a DNA helicase belonging to the RecQ family, plays a crucial role in maintaining genomic stability and integrity by participating in various DNA metabolic processes. Primarily, Sgs1 functions in DNA recombination, repair, and replication, where it unwinds DNA structures and resolves intermediates to ensure accurate DNA synthesis and repair. In recombination, Sgs1 promotes the dissolution of double Holliday junctions, preventing crossover events that could lead to genomic rearrangements. Additionally, Sgs1 is essential for the processing of stalled replication forks, preventing their collapse and facilitating DNA replication restart.

The inhibition of Sgs1 disrupts its vital roles in DNA metabolism, leading to profound consequences on genomic stability and cellular viability. Various chemicals act as direct inhibitors of Sgs1 by targeting different aspects of its function, including DNA unwinding, replication, and repair processes. These inhibitors interfere with Sgs1's ability to resolve DNA intermediates and promote accurate DNA synthesis and repair, ultimately leading to increased genomic instability and cellular dysfunction. Understanding the mechanisms of Sgs1 inhibition offers insights into the regulation of DNA metabolic processes and highlights potential strategies for modulating genomic stability in various biological contexts.

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Items 1 to 10 of 11 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Geldanamycin

30562-34-6sc-200617B
sc-200617C
sc-200617
sc-200617A
100 µg
500 µg
1 mg
5 mg
$38.00
$58.00
$102.00
$202.00
8
(1)

Geldanamycin inhibits Sgs1 through its interaction with Hsp90, a chaperone protein that stabilizes Sgs1. By disrupting the Hsp90-Sgs1 interaction, geldanamycin leads to the degradation of Sgs1, thereby inhibiting its function in DNA recombination and repair processes.

Caffeine

58-08-2sc-202514
sc-202514A
sc-202514B
sc-202514C
sc-202514D
5 g
100 g
250 g
1 kg
5 kg
$32.00
$66.00
$95.00
$188.00
$760.00
13
(1)

Caffeine inhibits Sgs1 by interfering with DNA repair processes. It disrupts the activation of ATM/ATR kinases, which are essential for phosphorylating Sgs1 and promoting its recruitment to DNA damage sites. This disruption leads to impaired DNA repair and increased genomic instability.

Camptothecin

7689-03-4sc-200871
sc-200871A
sc-200871B
50 mg
250 mg
100 mg
$57.00
$182.00
$92.00
21
(2)

Camptothecin inhibits Sgs1 by trapping the enzyme in a covalent complex with DNA, preventing its unwinding activity during DNA replication and repair. This inhibition leads to the accumulation of DNA damage and the disruption of cellular processes dependent on Sgs1-mediated DNA unwinding.

Novobiocin

303-81-1sc-362034
sc-362034A
5 mg
25 mg
$96.00
$355.00
(0)

Novobiocin inhibits Sgs1 by targeting bacterial gyrase, an enzyme homologous to eukaryotic topoisomerase II, which interacts with Sgs1 during DNA replication and repair. By inhibiting gyrase, novobiocin indirectly disrupts Sgs1 function, leading to impaired DNA processing and repair.

Aphidicolin

38966-21-1sc-201535
sc-201535A
sc-201535B
1 mg
5 mg
25 mg
$82.00
$300.00
$1082.00
30
(3)

Aphidicolin inhibits Sgs1 by blocking the activity of DNA polymerases, essential enzymes involved in DNA replication. By preventing DNA synthesis, aphidicolin indirectly impairs the function of Sgs1, which relies on DNA replication intermediates for its activity in DNA recombination and repair processes.

Etoposide (VP-16)

33419-42-0sc-3512B
sc-3512
sc-3512A
10 mg
100 mg
500 mg
$32.00
$170.00
$385.00
63
(1)

Etoposide inhibits Sgs1 by trapping the enzyme in a covalent complex with DNA, similar to camptothecin. This trapping prevents Sgs1 from unwinding DNA structures during replication and repair, leading to the accumulation of DNA damage and the disruption of cellular processes dependent on Sgs1-mediated DNA unwinding.

Mitomycin C

50-07-7sc-3514A
sc-3514
sc-3514B
2 mg
5 mg
10 mg
$65.00
$99.00
$140.00
85
(5)

Mitomycin C inhibits Sgs1 by inducing DNA crosslinks, which interfere with DNA replication and repair processes. These crosslinks impede the progression of Sgs1 along DNA strands, leading to stalled replication forks and increased genomic instability.

Actinomycin D

50-76-0sc-200906
sc-200906A
sc-200906B
sc-200906C
sc-200906D
5 mg
25 mg
100 mg
1 g
10 g
$73.00
$238.00
$717.00
$2522.00
$21420.00
53
(3)

Actinomycin D inhibits Sgs1 by intercalating into DNA strands, which disrupts the binding of Sgs1 to its substrate DNA. This interference prevents Sgs1 from unwinding DNA structures during replication and repair, leading to the accumulation of DNA damage and genomic instability.

Hydroxyurea

127-07-1sc-29061
sc-29061A
5 g
25 g
$76.00
$255.00
18
(1)

Hydroxyurea inhibits Sgs1 by depleting cellular dNTP pools, which are essential for DNA replication. By reducing the availability of nucleotides, hydroxyurea indirectly impairs the function of Sgs1, which requires nucleotide substrates for its activity in DNA recombination and repair processes.

Bleomycin

11056-06-7sc-507293
5 mg
$270.00
5
(0)

Bleomycin inhibits Sgs1 by inducing DNA strand breaks, which disrupt DNA replication and repair processes. These breaks interfere with the ability of Sgs1 to unwind DNA structures, leading to stalled replication forks and increased genomic instability.