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Assembly factors and their roles in quality control during ribosome maturation |
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Karbstein K. Quality control mechanisms during ribosome maturation. Trends Cell Biol. 2013 Jan 31. doi:pii: S0962-8924(13)00006-8. [Epub ahead of print] PMID: 23375955. |
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Assembly factor |
PfID |
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Annotation |
Function |
#E.C |
Transcript |
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40S assembly factors |
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34011 |
Dim1 |
PF3D7_1415800 |
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ribosomal RNA small subunit methyltransferase a1 |
Blocks 60S joining eIF1 |
2.1.1.183 |
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21064 |
Enp1 |
PF3D7_1109400 |
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essential nuclear protein 1, putative |
Block S10 binding and mRNA channel opening |
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21051 |
Ltv1 |
PF3D7_0214400 |
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protein ltv1, putative |
Required for efficient nuclear export of the ribosomal small subunit |
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21056 |
Nob1 |
PF3D7_0418700 |
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RNA-binding protein NOB1, putative |
Blocks eIF3 binding, nuclease |
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21076 |
Pno1 |
PF3D7_1469300 |
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pre-rRNA-processing protein pno1, putative |
Blocks eIF3 binding, S26 binding, Nob1 cofactor |
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21057 |
Rio2 |
PF3D7_0420100 |
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serine/threonine protein kinase RIO2 |
Blocks initiator tRNA, eIF1A |
2.7.11.1 |
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21074 |
Tsr1 |
PF3D7_1451900 |
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ribosome biogenesis protein TSR1, putative |
Blocks eIF1A |
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21058 |
eIF5B |
PF3D7_0607000 |
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translation initiation factor IF-2, putative |
Checks GTPase site integrity |
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21070 |
Rli1 |
PF3D7_1368200 |
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ABC transporter E family member 1, putative |
Checks GTPase site integrity |
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25496 |
Dom34 |
PF3D7_0722100 |
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protein pelota homolog, putative |
Checks decoding site |
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60S assembly factors |
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21072 |
Arx1/Alb1 |
PF3D7_1428300 |
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proliferation-associated protein 2g4, putative |
Export factor, blocks exit tunnel factors |
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21060 |
Nmd3 |
PF3D7_0729300 |
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60S ribosomal export protein NMD3, putative |
Export factor, blocks subunit joining |
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21068 |
eIF6/Tif6 |
PF3D7_1332800 |
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eukaryotic translation initiation factor 6, putative |
Blocks subunit joining |
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21065 |
Efl1+Sdo1 |
PF3D7_1123400 |
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eukaryotic peptide chain release factor GTP-binding subunit, putative, erf3 |
Test P-site integrity, remove rIF6 |
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21075 |
Efl1+Sdo1 |
PF3D7_1469000 |
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translation initiation factor IF-1 |
Test P-site integrity, remove rIF6 |
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21061 |
Ssa1 |
PF3D7_0818900 |
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PfHsp70-1 |
Hsp70 chaperone to remove Arx1, tests chaperone site |
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21069 |
Mrt4 |
PF3D7_1367600 |
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ribosome biogenesis protein MRT4, putative |
Blocks premature P0 binding |
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21052 |
Rpl7 |
PF3D7_0307200 |
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60S ribosomal protein L7, putative |
Blocks premature L7 binding |
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21067 |
Rpl24 |
PF3D7_1309100 |
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60S ribosomal protein L24, putative |
Blocks premature L24 binding |
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21062 |
Jjj1 |
PF3D7_1005600 |
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DnaJ protein, putative |
Required for Arx1 removal |
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21055 |
Rei1 |
PF3D7_0409800 |
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zinc finger protein, putative |
required for dissociation of Arx1 |
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21053 |
Yvh1 |
PF3D7_0309000 |
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dual specificity protein phosphatase |
required for the exchange of Mrt4 with P0 |
3.1.3.16 |
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21073 |
Lsg1 |
PF3D7_1431300 |
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large subunit GTPase 1, putative |
promotes release of the nuclear export adapter |
3.6.5.1 |
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21066 |
P0 |
PF3D7_1130200 |
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60S ribosomal protein P0 |
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21063 |
P1 |
PF3D7_1103100 |
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60S acidic ribosomal protein P1, putative |
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21054 |
P2 |
PF3D7_0309600 |
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60S acidic ribosomal protein P2 |
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