Date published: 2026-3-24

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PheRS Inhibitors

PheRS inhibitors are a class of chemical compounds designed to target and inhibit the activity of phenylalanyl-tRNA synthetase (PheRS), an enzyme essential for protein synthesis in cells. PheRS is responsible for catalyzing the attachment of the amino acid phenylalanine to its corresponding tRNA molecule during translation. This process, known as aminoacylation, is a critical step in ensuring that phenylalanine is incorporated accurately into the growing polypeptide chain according to the mRNA sequence. By inhibiting PheRS, these compounds interfere with the aminoacylation process, disrupting the proper incorporation of phenylalanine into proteins, which can lead to errors in protein synthesis and cellular dysfunction.

PheRS inhibitors are widely used in research to explore the fundamental mechanisms of protein synthesis and to understand the broader effects of disrupted amino acid incorporation on cellular processes. By blocking PheRS activity, researchers can study how phenylalanine deficiency at the translational level impacts cellular metabolism, protein folding, and overall protein homeostasis. These inhibitors also provide insights into the specificity of aminoacyl-tRNA synthetases and the importance of precise amino acid-tRNA pairing for maintaining the fidelity of the genetic code. PheRS inhibitors serve as valuable tools for studying the critical role of aminoacyl-tRNA synthetases in translation, as well as the consequences of disrupting protein synthesis on cellular functions such as growth, division, and response to environmental cues. Through these studies, scientists can gain a deeper understanding of the intricate processes that govern gene expression and protein biosynthesis.

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Items 1 to 10 of 12 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Actinomycin D

50-76-0sc-200906
sc-200906A
sc-200906B
sc-200906C
sc-200906D
5 mg
25 mg
100 mg
1 g
10 g
$74.00
$243.00
$731.00
$2572.00
$21848.00
53
(3)

Actinomycin D binds to DNA sequences at transcription initiation complexes, which may result in the transcriptional repression of the PheRS gene by blocking RNA polymerase movement along the gene.

Rifampicin

13292-46-1sc-200910
sc-200910A
sc-200910B
sc-200910C
1 g
5 g
100 g
250 g
$97.00
$328.00
$676.00
$1467.00
6
(1)

Rifampicin can bind to the beta subunit of bacterial RNA polymerase, potentially causing a decrease in the synthesis of bacterial PheRS mRNA by obstructing the initiation of transcription.

α-Amanitin

23109-05-9sc-202440
sc-202440A
1 mg
5 mg
$269.00
$1050.00
26
(2)

This compound could selectively inhibit RNA polymerase II in eukaryotic cells, leading to a decreased production of mRNA for PheRS by halting mRNA elongation.

DRB

53-85-0sc-200581
sc-200581A
sc-200581B
sc-200581C
10 mg
50 mg
100 mg
250 mg
$43.00
$189.00
$316.00
$663.00
6
(1)

DRB can suppress transcriptional elongation by RNA polymerase II, which may result in a reduced level of PheRS mRNA due to premature termination of its transcription.

Triptolide

38748-32-2sc-200122
sc-200122A
1 mg
5 mg
$90.00
$204.00
13
(1)

Triptolide has been shown to inhibit the overall activity of RNA polymerase II, which could lead to a targeted downregulation of PheRS gene transcription.

Mitomycin C

50-07-7sc-3514A
sc-3514
sc-3514B
2 mg
5 mg
10 mg
$66.00
$101.00
$143.00
85
(5)

Mitomycin C forms DNA adducts and crosslinks between DNA strands, which may obstruct the transcription machinery from accessing the PheRS gene, leading to decreased mRNA synthesis.

Chloroquine

54-05-7sc-507304
250 mg
$69.00
2
(0)

Chloroquine's DNA intercalating activity could disrupt the proper transcription of the PheRS gene, potentially leading to a lower transcription rate and thus reduced expression of PheRS.

Trichostatin A

58880-19-6sc-3511
sc-3511A
sc-3511B
sc-3511C
sc-3511D
1 mg
5 mg
10 mg
25 mg
50 mg
$152.00
$479.00
$632.00
$1223.00
$2132.00
33
(3)

Trichostatin A inhibits histone deacetylase, causing an increase in acetylated histones, which may repress transcription of the PheRS gene by altering chromatin structure.

(−)-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
$43.00
$73.00
$126.00
$243.00
$530.00
$1259.00
11
(1)

Epigallocatechin Gallate has been found to inhibit DNA methyltransferases, which might lead to hypermethylation of the PheRS gene promoter and consequent transcriptional silencing of the gene.

Camptothecin

7689-03-4sc-200871
sc-200871A
sc-200871B
50 mg
250 mg
100 mg
$58.00
$186.00
$94.00
21
(2)

Camptothecin inhibits topoisomerase I, preventing DNA from unwinding, which is necessary for transcription; this action could specifically hinder the transcription of the PheRS gene.