CPSF4

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. [provided by RefSeq, Jul 2008]

Description

Cleavage and polyadenylation specific factor 4

Tissue specificity

Low tissue specificity

Subcell location

Nucleoplasm, Vesicles

Predicted location

Intracellular

Protein family

Mapped to neXtProt
Mapped to UniProt SWISS-PROT
Plasma proteins
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Protein evidence (Kim et al 2014)

Chromosome

7 (99438922 - 99457373)

Ensembl ID

ENSG00000160917  (ver. 103.38)

Orthologs

Mouse Cpsf4: ENSMUSG00000029625

UniProt

O95639

neXtProt

NX_O95639

Human splice variants
Mouse splice variants

Protein structure