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Table 1 Arabidopsis genes encoding plant polyadenylation factor subunits

From: Arabidopsis mRNA polyadenylation machinery: comprehensive analysis of protein-protein interactions and gene expression profiling

Subunit (Mammal/yeast) Proposed protein function in mammal or/and yeast Arabidopsis gene (gene name) BLASTP score against human homolog
Single genes
CPSF160/Yhh1 Binds to AAUAAA At5g51660 (CPSF160) Score = 346 bits (888), Expect = 6e-93
CPSF100/Ydh1 Unknown At5g23880 (CPSF100, ESP5) Score = 505 bits (1301), Expect = 4e-141,
CPSF73a/Ysh1 Endonuclease At1g61010 (CPSF73-I) Score = 759 bits (1960), Expect = 0.0
CPSF73b/-1 Similar to CPSF73a At2g01730 (CPSF73-II, FEG) Score = 561 bits (1445), Expect = 6e-158
CPSF30/Yth1 RNA binding, endonuclease At1g30460 (CPSF30, OXT6) Score = 97.8 bits (242), Expect = 5e-19
CstF77/Rna14 Scaffold for CstF64 and CstF50; bridge to CPSF At1g17760 (CSTF77) Score = 386 bits (991), Expect = 3e-105
CstF64/Rna15 Binds to the downstream element At1g71800 (CSTF64) Score = 121 bits (304), Expect = 9e-26
CstF50/-1   At5g60940 (CSTF50) Score = 291 bits (745), Expect = 5e-77
hPfs2/Pfs2 RNA binding At5g13480 (FY) Score = 394 bits (1013), Expect = 7e-108
Multiple genes
PAP/Pap1 Creates the poly(A) tail At1g17980 (PAPS1) Score = 423 bits (1088), Expect = 2e-116
   At2g25850 (PAPS2) Score = 405 bits (1040), Expect = 8e-111
   At3g06560 (PAPS3) Score = 239 bits (611), Expect = 2e-61
   At4g32850 (PAPS4) Score = 399 bits (1025), Expect = 4e-109
hFip1/Fip1 Interacts with PAP, regulates CPSF30 activity At3g66652 (FIPS3) Score = 58.2 bits (139), Expect = 3e-06
   Ag5g58040 (FIPS5) Score = 65.1 bits (157), Expect = 3e-08*
CFIm25/-1 Cleavage factor; Interact with RNA At4g25550 (CFIS2) Score = 245 bits (625), Expect = 1e-63
   At4g29820 (CFIS1) Score = 187 bits (474), Expect = 5e-46
hClp1/Clp1 RNA kinase At3g04680 (CLPS3) Score = 330 bits (845), Expect = 1e-88
   At5g39930 (CLPS5) Score = 252 bits (643), Expect = 4e-67
hPcf11p/Pcf11 Interacts with CstF At1g66500 (PCFS1) Score = 57.0 bits (136), Expect = 2e-06
   At4g04885 (PCFS4) Score = 85.9 bits (211), Expect = 1e-14
   At5g43620 (PCFS5) Score = 57.0 bits (136), Expect = 2e-06
PabN/Pab1 Binds to poly(A), controls length of poly(A) At5g10350 (PABN3) Score = 122 bits (305), Expect = 2e-26,
   At5g51120 (PABN2) Score = 119 bits (297), Expect = 2e-25
   At5g65260 (PABN1) Score = 120 bits (302), Expect = 4e-26
Symplekin/Pta1 Part of CPSF At5g01400 (ESP4, SYM5) Score = 261 bits (666), Expect = 3e-67
   At1g27590 (SYM1) Score = 54.3 bits (129), Expect = 3e-05
   At1g27595 (SYM2) Score = 241 bits (616), Expect = 1e-61
No obvious homolog
CFIm68/59 Unknown none  
-/Hrp1 Part of cleavage factor in yeast none  
  1. * This value is from the comparison to a homologue of Danio rerio.