Date published: 2026-5-16

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CstF-50 Activators

CstF-50, formally known as Cleavage stimulation factor 50 kDa subunit, is a crucial protein in the process of mRNA 3' end formation in eukaryotic cells. This protein, encoded by the CSTF1 gene, is part of the cleavage stimulation factor (CstF) complex, a key player in the pre-mRNA cleavage and polyadenylation process. The CstF complex itself is typically composed of three subunits: CstF-77, CstF-64, and CstF-50, with CstF-50 being essential for the complex's stability and function.

The primary role of CstF-50 is to participate in the cleavage of pre-mRNA and the addition of a poly(A) tail at the 3' end. This modification is a critical step in mRNA maturation and is essential for the stability, nuclear export, and translation of mRNA molecules. By influencing the polyadenylation process, CstF-50 indirectly affects gene expression regulation.CstF-50 also interacts with other proteins and RNA elements to modulate the cleavage and polyadenylation specificity factor (CPSF) complex, another critical component in the polyadenylation machinery. Through these interactions, CstF-50 helps determine the specific sites where pre-mRNA will be cleaved and polyadenylated, impacting the generation of different mRNA isoforms through alternative polyadenylation. This process is vital for the regulation of gene expression in various developmental and cellular contexts.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

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 is a potent inhibitor of RNA polymerase II. By inhibiting transcription, it can indirectly affect mRNA processing mechanisms, potentially influencing CstF-50 activity.

Spliceostatin A

391611-36-2sc-507481
1 mg
$1800.00
(0)

This compound is a potent inhibitor of the spliceosome, affecting RNA splicing. Altered splicing can indirectly impact mRNA 3' end processing, where CstF-50 is involved.

Leptomycin B

87081-35-4sc-358688
sc-358688A
sc-358688B
50 µg
500 µg
2.5 mg
$107.00
$416.00
$1248.00
35
(2)

Known as an inhibitor of nuclear export, it affects mRNA transport and processing, potentially altering CstF-50 related pathways.

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)

This antibiotic intercalates DNA and inhibits RNA polymerase, thereby indirectly influencing mRNA processing and potentially CstF-50 activity.

Triptolide

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

Triptolide is known to inhibit RNA Polymerase II, thereby impacting transcription and indirectly mRNA processing mechanisms.

Flavopiridol Hydrochloride

131740-09-5sc-207687
10 mg
$317.00
(2)

As a cyclin-dependent kinase inhibitor, Flavopiridol can affect transcription regulation, indirectly impacting CstF-50 activity.

Rocaglamide

84573-16-0sc-203241
sc-203241A
sc-203241B
sc-203241C
sc-203241D
100 µg
1 mg
5 mg
10 mg
25 mg
$275.00
$474.00
$1639.00
$2497.00
$5344.00
4
(1)

Rocaglamide inhibits translation and can also indirectly affect mRNA processing, potentially influencing CstF-50.

KPT 330

1393477-72-9sc-489062
5 mg
$173.00
(0)

As a selective inhibitor of nuclear export, it affects mRNA processing, potentially impacting CstF-50 activity.

Anisomycin

22862-76-6sc-3524
sc-3524A
5 mg
50 mg
$99.00
$259.00
36
(2)

Known as a protein synthesis inhibitor, it can indirectly influence mRNA processing, affecting CstF-50.

Tunicamycin

11089-65-9sc-3506A
sc-3506
5 mg
10 mg
$172.00
$305.00
66
(3)

Tunicamycin inhibits N-linked glycosylation, affecting overall cellular processes, including mRNA processing that involves CstF-50.