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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.
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