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C2872

Sigma-Aldrich

Anti-CSTF1 (N-terminal) antibody produced in rabbit

~1.0 mg/mL, affinity isolated antibody, buffered aqueous solution

Synonym(s):

Anti-Cleavage stimulation factor, 3-prime PRE-RNA, subunit 1, 50-KD, Anti-CstF-50, Anti-CstFp50

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About This Item

UNSPSC Code:
12352203

biological source

rabbit

conjugate

unconjugated

antibody form

affinity isolated antibody

antibody product type

primary antibodies

clone

polyclonal

form

buffered aqueous solution

mol wt

antigen ~48 kDa

species reactivity

human

concentration

~1.0 mg/mL

technique(s)

immunoprecipitation (IP): 5-10 μg using K562 cell lysates
western blot: 1-2 μg/mL using HepG2 cell lysates

UniProt accession no.

shipped in

dry ice

storage temp.

−20°C

Gene Information

human ... CSTF1(1477)
mouse ... Cstf1(67337)
rat ... Cstf1(311670)

General description

Cleavage stimulation factor (CSTF) is a heterotrimer consisting of subunits of 50, 64 and 77 kDa referred to as CSTF1, CSTF2 and CSTF3 respectively. Anti-CSTF1 (N-terminal) is produced in rabbit using a synthetic peptide as immunogen. It corresponds to amino acids 2-16 of human CSTF1 conjugated to KLH. The corresponding sequence is identical in mouse and rat. The antibody is affinity-purified using the immunizing peptide immobilized on agarose.

Application

Anti-CSTF1 is used in immunoprecipitation at a concentration of 5-10 μg using K562 cell lysates. The antibody may be used in several immunochemical techniques including immunoblotting (∼48 kDa).

Biochem/physiol Actions

CSTF1 is required for in vitro cleavage activity. CSTF1 also interacts directly with the RNA polymerase II CTD, suggesting a role in linking transcription and mRNA 3′-ends processing. It is required for polyadenylation and 3′-end cleavage of mammalian pre-mRNAs.

Physical form

Solution in 0.01 M phos­phate buffered saline, pH 7.4, containing 15 mM sodium azide.

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

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J Zhao et al.
Microbiology and molecular biology reviews : MMBR, 63(2), 405-445 (1999-06-05)
Formation of mRNA 3' ends in eukaryotes requires the interaction of transacting factors with cis-acting signal elements on the RNA precursor by two distinct mechanisms, one for the cleavage of most replication-dependent histone transcripts and the other for cleavage and
C R Mandel et al.
Cellular and molecular life sciences : CMLS, 65(7-8), 1099-1122 (2007-12-26)
Most eukaryotic mRNA precursors (premRNAs) must undergo extensive processing, including cleavage and polyadenylation at the 3'-end. Processing at the 3'-end is controlled by sequence elements in the pre-mRNA (cis elements) as well as protein factors. Despite the seeming biochemical simplicity

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