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PAPOLA protein (human) - STRING interaction network
"PAPOLA" - poly(A) polymerase alpha in Homo sapiens
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Predicted Interactions
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textmining
co-expression
protein homology
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PAPOLApoly(A) polymerase alpha; Polymerase that creates the 3’-poly(A) tail of mRNA’s. Also required for the endoribonucleolytic cleavage reaction at some polyadenylation sites. May acquire specificity through interaction with a cleavage and polyadenylation specificity factor (CPSF) at its C-terminus (745 aa)    
Predicted Functional Partners:
CSTF3
Cleavage stimulation factor, 3’ pre-RNA, subunit 3, 77kDa; One of the multiple factors required for polyadenylation and 3’-end cleavage of mammalian pre-mRNAs (717 aa)
     
  0.999
CPSF2
Cleavage and polyadenylation specific factor 2, 100kDa; 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. Involved in the histone 3’ end pre-mRNA processing (782 aa)
     
  0.998
CPSF1
Cleavage and polyadenylation specific factor 1, 160kDa; Component of the cleavage and polyadenylation specificity factor (CPSF) complex that plays 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. This subunit is involved in the RNA recognition step of the polyadenylation reaction (1443 aa)
     
  0.998
FIP1L1
FIP1 like 1 (S. cerevisiae); Component of the cleavage and polyadenylation specificity factor (CPSF) complex that plays 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. FIP1L1 contributes to poly(A) site recognition and stimulates poly(A) addition. Binds to U-rich RNA sequence elements surrounding the poly(A) site. May act to tether poly(A) polymerase to the CPSF complex (594 aa)
     
  0.996
CPSF4
Cleavage and polyadenylation specific factor 4, 30kDa; 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) (269 aa)
     
  0.993
CSTF2
Cleavage stimulation factor, 3’ pre-RNA, subunit 2, 64kDa; One of the multiple factors required for polyadenylation and 3’-end cleavage of mammalian pre-mRNAs. This subunit is directly involved in the binding to pre-mRNAs (By similarity) (577 aa)
     
  0.992
CPSF3
Cleavage and polyadenylation specific factor 3, 73kDa; 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. Has endonuclease activity, and functions as mRNA 3’-end-processing endonuclease. Also involved in the histone 3’-end pre-mRNA processing. U7 snRNP- dependent protein that induces both the 3’-endoribonucleolytic cleavage of histone pre-mRNAs and acts as a 5’ to 3’ [...] (684 aa)
     
  0.990
PABPN1
poly(A) binding protein, nuclear 1; Involved in the 3’-end formation of mRNA precursors (pre-mRNA) by the addition of a poly(A) tail of 200-250 nt to the upstream cleavage product. Stimulates poly(A) polymerase (PAPOLA) conferring processivity on the poly(A) tail elongation reaction and controls also the poly(A) tail length. Increases the affinity of poly(A) polymerase for RNA. Is also present at various stages of mRNA metabolism including nucleocytoplasmic trafficking and nonsense-mediated decay (NMD) of mRNA. Cooperates with SKIP to synergistically activate E-box-mediated transcripti [...] (306 aa)
     
  0.971
NUDT21
Nudix (nucleoside diphosphate linked moiety X)-type motif 21; Component of the cleavage factor Im (CFIm) complex that plays a key role in pre-mRNA 3’-processing. Involved in association with CPSF6 or CPSF7 in pre-MRNA 3’-end poly(A) site cleavage and poly(A) addition. NUDT21/CPSF5 binds to cleavage and polyadenylation RNA substrates. The homodimer mediates simultaneous sequence-specific recognition of two 5’-UGUA-3’ elements within the pre-mRNA. Binds to, but does not hydrolyze mono- and di-adenosine nucleotides. May have a role in mRNA export (227 aa)
     
  0.970
RNPS1
RNA binding protein S1, serine-rich domain; Part of pre- and post-splicing multiprotein mRNP complexes. Auxiliary component of the splicing-dependent multiprotein exon junction complex (EJC) deposited at splice junction on mRNAs. The EJC is a dynamic structure consisting of core proteins and several peripheral nuclear and cytoplasmic associated factors that join the complex only transiently either during EJC assembly or during subsequent mRNA metabolism. Component of the ASAP and PSAP complexes which bind RNA in a sequence-independent manner and are proposed to be recruited to the EJC [...] (305 aa)
     
  0.962
Your Current Organism:
Homo sapiens
NCBI taxonomy Id: 9606
Other names: H. sapiens, Homo, Homo sapiens, human, man
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