Cleavage polyadenylation specificity factor 4 (CPSF4), also called CPSF 30 is a component of the CPSF complex. It comprises of five CCCH zinc finger motifs (ZF1-ZF5). CPSF4 gene is mapped to human chromosome 7q22.1.
Specificity
Anti-CPSF4 recognizes human CPSF4.
Application
Anti-CPSF4 antibody produced in rabbit has been used in chromatin immunoprecipitation and immunoblotting.
Biochem/physiol Actions
Cleavage polyadenylation specificity factor 4 (CPSF4) is a component of 3′-end mRNA processing machinery and binds to poly(U) sequence of RNA via the zinc finger motifs. These motifs are also involved in protein-protein interactions. CPSF4 along with other proteins primarily coordinate both cleavage and polyadenylation. Their interaction with the non-structural protein 1 (NS1) protein of the influenza virus leads to inhibition of polyadenylation event and 3′ end cleavage of pre-mRNA associated with the host. Elevated expression of CPSF4 is observed in lung adenocarcinomas.
Physical form
Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.
Storage and Stability
For continuous use, store at 2–8 °C for up to one month. For extended storage, freeze in working aliquots. Repeated freezing and thawing, or storage in “frost-free” freezers, is not recommended. If slight turbidity occurs upon prolonged storage, clarify the solution by centrifugation before use. Working dilutions should be discarded if not used within 12 hours.
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3? end formation of pre-mRNA and phosphorylation of Ser2 on the RNA polymerase II CTD are reciprocally coupled in human cells
3' end formation of pre-mRNAs is coupled to their transcription via the C-terminal domain (CTD) of RNA polymerase II (Pol II). Nearly all protein-coding transcripts are matured by cleavage and polyadenylation (CPA), which is frequently misregulated in disease. Understanding how
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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