Date published: 2026-4-30

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APNG Inhibitors

N-methylpurine DNA glycosylase (MPG), also known as AAG (alkyladenine DNA glycosylase), is an enzyme involved in DNA repair processes, specifically the removal of alkylated bases from DNA. While specific small molecule inhibitors targeting MPG may not be as well-documented as inhibitors for other DNA repair enzymes, some compounds have been studied for their potential to inhibit MPG activity indirectly. The primary purpose of studying APNG inhibitors is to investigate the mechanisms of DNA repair and gain insights into how cells maintain genomic stability in the face of DNA damage. APNG inhibitors typically work by interfering with the catalytic activity of the enzyme MPG/APNG. They are designed to bind to the active site of the enzyme, it from recognizing and excising alkylated purine bases within DNA. This inhibition leads to the accumulation of DNA lesions and potentially disrupts DNA repair processes, which can have significant implications for cellular responses to DNA damage.
Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

O6-Benzylguanine

19916-73-5sc-202747
sc-202747A
10 mg
50 mg
$51.00
$79.00
7
(1)

While primarily known for its inhibition of the DNA repair enzyme O6-methylguanine-DNA methyltransferase (MGMT), O6-benzylguanine can also affect MPG. It can deplete cellular MPG levels, indirectly inhibiting its activity.

Autophagy Inhibitor, 3-MA

5142-23-4sc-205596
sc-205596A
50 mg
500 mg
$65.00
$261.00
113
(3)

3-MA is an inhibitor that can indirectly affect MPG by inhibiting the activity of phosphoinositide 3-kinase (PI3K), which is involved in various DNA repair processes. The inhibition of PI3K by 3-MA can influence the repair of alkylated DNA lesions by MPG.

6-O-Methylguanine

20535-83-5sc-217374
10 mg
$210.00
(0)

This DNA base is a substrate for MPG, and its presence in DNA can compete with other alkylated bases for MPG binding and repair. In this way, O6-methylguanine can indirectly inhibit the repair of other alkylated DNA bases by MPG.