Rabbit anti-Human CPSF4 Polyclonal Antibody

Uniprot Id

O95639

Target Species

Human

Target Name

CPSF4

Target Full Name

Cleavage and polyadenylation specificity factor subunit 4

Target Function

Component of the cleavage and polyadenylation specificity factor (CPSF) complex that play a key role in pre-mRNA 3'-end formation, recognizing the AAUAAA signal sequence and interacting with poly(A) polymerase and other factors to bring about cleavage and poly(A) addition. CPSF4 binds RNA polymers with a preference for poly(U).

Target Subcellular Location

Nucleus.

Target Protein Families

CPSF4/YTH1 family

Target Research Area

Microbiology

Target Synonyms

cleavage and polyadenylation specific factor 4; 30kDa; Cleavage and polyadenylation specificity factor 30 kDa subunit; Cleavage and polyadenylation specificity factor subunit 4; cleavage polyadenylation specificity factor; 30kD; CPSF 30 kDa subunit; CPSF30; Cpsf4; CPSF4_HUMAN; NAR; Neb-1; NEB1; No arches homolog; no arches like zinc finger protein; NS1 effector domain binding protein 1; NS1 effector domain-binding protein 1; OTTHUMP00000206235; OTTHUMP00000206237; OTTHUMP00000206239

Target Background

Inhibition of the nuclear export of poly(A)-containing mRNAs caused by the influenza A virus NS1 protein requires its effector domain. The NS1 effector domain functionally interacts with the cellular 30 kDa subunit of cleavage and polyadenylation specific factor 4, an essential component of the 3' end processing machinery of cellular pre-mRNAs. In influenza virus-infected cells, the NS1 protein is physically associated with cleavage and polyadenylation specific factor 4, 30kD subunit. Binding of the NS1 protein to the 30 kDa protein in vitro prevents CPSF binding to the RNA substrate and inhibits 3' end cleavage and polyadenylation of host pre-mRNAs. Thus the NS1 protein selectively inhibits the nuclear export of cellular, and not viral, mRNAs. Multiple alternatively spliced transcript variants that encode different isoforms have been described for this gene.