Table 1

Putative decay components in Plasmodium falciparum were identified using known factors from human and yeast

Components
Gene
PlasmoDB ID
Description

Deadenylation
Ccr4
PFE0980c
Catalytic subunit of the Ccr4/Pop2 deadenylase complex

Pop2
MAL8P1.104
Component of the Ccr4/Pop2 deadenylase complex

Not1
PF11_0049
Component of the Ccr4/Not complex

Not2
PF11_0297
Component of the Ccr4/Not complex

Not3
?
Component of the Ccr4/Not complex

Not4
PFL1705w
Component of the Ccr4/Not complex

Not5
PF10_0062
Component of the Ccr4/Not complex

Caf130
?
Component of the Ccr4/Not complex

Caf40
PFE0375w
Component of the Ccr4/Not complex

PARN
PF14_0413*
Major deadenylase in mammals

Pab1
PFL1170w
PolyA binding protein

Pan2
?
Component of the Pan2/Pan3 deadenylase complex

Pan2
?
Component of the Pan2/Pan3 deadenylase complex
Decapping
Dcp1
PF10_0314*
Component of the Dcp1/Dcp2 decapping complex

Dcp2
Pf13_0048
Catalytic subunit of the Dcp1/Dcp2 decapping complex

DcpS/Dcs1
?
Scavenger decapping enzyme

Dhh1
PFC0915w
Helicase-roles in deadenylation and decapping

Lsm1
PF11_0255
Involved in decapping

Lsm2
PFE1020w
Involved in decapping

Lsm3
PF08_0049
Involved in decapping

Lsm4
PF11_0524
Involved in decapping

Lsm5
PF14_0411
Involved in decapping

Lsm6
PF13_0142
Involved in decapping

Lsm7
PFL0460w
Involved in decapping
Exosome
Csl4
MAL7P1.104
Exosome subunit

Dis3/Rrp44
MAL13P1.289
Exosome subunit-RNase II domain

Mtr3
?
Exosome subunit-RNase PH domain

Rrp4
PFD0515w
Exosome subunit-hydrolytic exonuclease

Rrp40
MAL13P1.36
exosome subunit-hydrolytic exonuclease

Rrp42
MAL13P1.204
Exosome subunit-RNase PH domain

Rrp43
?
Exosome subunit-RNase PH domain

Rrp45
PF13_0340
Exosome subunit-RNase PH domain

Rrp46
?
Exosome subunit-RNase PH domain

Rrp6
PF14_0473
Exosome subunit found only in the nucleus

Ski2
PFI0480w
Helicase associated with the exosome and Ski complex

Ski3/Ski5
?
Associated with exosome and Ski complex

Ski6/Rrp41
PF14_0256
Exosome subunit-RNase PH domain

Ski7
?
Associated with exosome and Ski complex

Ski8
?
Associated with exosome and Ski complex
5' to 3' decay
Xrn1
PFI0455w/PF11_0074
5' to 3' exonuclease-cytoplasmic

Rat1
PFI0455w/PF11_0074
5' to 3' exonuclease-nuclear

Orthologs were identified using a simple reciprocal best BLASTP match between Plasmodium falciparum and Saccharomyces cerevisiae and between P. falciparum and human sequences. Orthologs could not be found for those genes with question marks. *Components identified only when the human sequence was used for the query sequence. P. falciparum proteins that either are described in PlasmoDB as hypothetical proteins or, in the case of PF10_0314, are assigned a function other than the one relevant here.

Shock et al. Genome Biology 2007 8:R134   doi:10.1186/gb-2007-8-7-r134