Date published: 2025-9-30

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METTL5 Inhibitors

Chemical inhibitors of METTL5 operate through various mechanisms to hinder its enzymatic function. S-Adenosylhomocysteine (SAH) is a potent inhibitor, arising as a byproduct of methylation reactions; it competes with S-Adenosylmethionine (SAM), the natural methyl donor, thus preventing methylation by METTL5. Similarly, Methylthioadenosine (MTA) mimics SAM's structure, competitively inhibiting METTL5's binding to SAM. Sinomenine and Chaetocin exert their effects by binding to METTL5's active site, where methylation occurs, effectively blocking this process. BIX-01294, although primarily targeting other methyltransferases, can also disrupt METTL5 by binding to its substrate site, which interferes with its enzymatic activity. Other inhibitors act by modulating the availability or effectiveness of SAM. RG108, while a DNA methyltransferase inhibitor, can also bind to the active site of protein methyltransferases like METTL5, obstructing substrate access. Decitabine and Hydralazine reduce the SAM pool by incorporating into DNA and indirectly inhibiting DNA methyltransferases, which in turn lessens SAM's availability for METTL5. 3-Deazaneplanocin A (DZNep) elevates SAH levels by inhibiting its hydrolysis, leading to increased competition with SAM and reduced METTL5 activity. Quercetin disrupts kinase-dependent regulation that may be essential for METTL5's function, while Anacardic acid binds to the enzyme's active site, potentially altering its ability to interact with substrates. Lastly, Epigallocatechin gallate (EGCG) can alter the conformation of METTL5 or compete with SAM, obstructing the enzyme's methylation activity. Each of these chemicals, through their distinct interactions with METTL5's active site or SAM, serve to inhibit the enzyme's methylation capacity.
Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Chaetocin

28097-03-2sc-200893
200 µg
$120.00
5
(1)

Chaetocin is a known inhibitor of histone methyltransferases and can inhibit METTL5 by occupying the binding site for the enzyme's substrates, preventing methylation.

BIX01294 hydrochloride

1392399-03-9sc-293525
sc-293525A
sc-293525B
1 mg
5 mg
25 mg
$36.00
$110.00
$400.00
(1)

BIX-01294 is a diazepin-quinazolin-amine derivative that inhibits G9a and GLP histone methyltransferases and can inhibit METTL5 by interfering with the substrate binding site, hindering its methyltransferase activity.

RG 108

48208-26-0sc-204235
sc-204235A
10 mg
50 mg
$128.00
$505.00
2
(1)

RG108 is a non-nucleoside DNA methyltransferase inhibitor that can also inhibit protein methyltransferases such as METTL5 by binding to the active site and blocking the enzyme's access to its substrates.

5-Aza-2′-Deoxycytidine

2353-33-5sc-202424
sc-202424A
sc-202424B
25 mg
100 mg
250 mg
$214.00
$316.00
$418.00
7
(1)

Decitabine is a cytidine analog that incorporates into DNA and can indirectly inhibit DNA methyltransferases. While it primarily targets DNA, it can also inhibit protein methyltransferases such as METTL5 by sequestering SAM and preventing its use as a methyl donor.

Hydralazine-15N4 Hydrochloride

304-20-1 (unlabeled)sc-490605
1 mg
$480.00
(0)

Hydralazine is known to demethylate DNA indirectly by inhibiting DNA methyltransferases. It can exert a similar inhibitory effect on protein methyltransferases like METTL5 by depleting the pool of SAM, the methyl donor used by these enzymes.

Quercetin

117-39-5sc-206089
sc-206089A
sc-206089E
sc-206089C
sc-206089D
sc-206089B
100 mg
500 mg
100 g
250 g
1 kg
25 g
$11.00
$17.00
$108.00
$245.00
$918.00
$49.00
33
(2)

Quercetin, a flavonoid polyphenol, has been shown to inhibit a range of protein kinases. Its broad action on kinase inhibition can disrupt phosphorylation-dependent regulation of methyltransferases, therefore, it can indirectly inhibit METTL5's activity by preventing essential phosphorylation that may be necessary for its activity.

(−)-Epigallocatechin Gallate

989-51-5sc-200802
sc-200802A
sc-200802B
sc-200802C
sc-200802D
sc-200802E
10 mg
50 mg
100 mg
500 mg
1 g
10 g
$42.00
$72.00
$124.00
$238.00
$520.00
$1234.00
11
(1)

Epigallocatechin gallate (EGCG) is a catechin found in green tea with inhibitory effects on various enzymes, including DNA methyltransferases. EGCG can inhibit METTL5 by altering the enzyme's conformation or by competing with SAM, thus preventing the methylation of METTL5's target substrates.

Anacardic Acid

16611-84-0sc-202463
sc-202463A
5 mg
25 mg
$100.00
$200.00
13
(1)

Anacardic acid is a natural compound that inhibits histone acetyltransferases and has been suggested to inhibit other methyltransferases by binding to the active site. It can interfere with METTL5's ability to access its substrates, thereby inhibiting its methylation function.