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Exportin
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<StructureSection load='3icq' size='400' side='right' caption='Structure of yeast exportin-5 (magenta) complex with GTPaseRan (cyan), Mg+2 (green) and RNA (PDB code [[3icq]]).' scene='59/592125/Cv/9'> | <StructureSection load='3icq' size='400' side='right' caption='Structure of yeast exportin-5 (magenta) complex with GTPaseRan (cyan), Mg+2 (green) and RNA (PDB code [[3icq]]).' scene='59/592125/Cv/9'> | ||
| - | '''Exportins''' (XPO) or '''chromosomal maintenance protein''' mediate the nuclear export of cellular proteins with a leucine-rich export signal (NES) and RNA. XPO is regulated by GTPaseRan. RanGTP bind to XPO forming a ternary complex with the exported protein. The complex diffuses through the nuclear core complex to the cytoplasm and then dissociates. '''XPO-t''' exports tRNA from the nucleus<ref>PMID:17786152</ref>. | + | '''Exportins''' (XPO) or '''chromosomal maintenance protein''' mediate the nuclear export of cellular proteins with a leucine-rich export signal (NES) and RNA. XPO is regulated by GTPaseRan. RanGTP bind to XPO forming a ternary complex with the exported protein. The complex diffuses through the nuclear core complex to the cytoplasm and then dissociates. <br /> |
| + | *'''XPO-1''' mediates nuclear transport of cellular proteins bearing a Leu-rich nuclear export signal and of RNA.<br /> | ||
| + | *'''XPO-4''' mediates nuclear transport of eukaryotic translation initiation factor 5A<ref>PMID:10944119</ref>.<br /> | ||
| + | *'''XPO-4''' mediates nuclear transport of pre-miroRNAs and short hairpin RNAs<ref>PMID:14681208</ref>.<br /> | ||
| + | *'''XPO-t''' exports tRNA from the nucleus<ref>PMID:17786152</ref>.<br /> | ||
==Structural highlights == | ==Structural highlights == | ||
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</StructureSection> | </StructureSection> | ||
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| - | ==3D structures of exportin== | ||
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| - | Updated on {{REVISIONDAY2}}-{{MONTHNAME|{{REVISIONMONTH}}}}-{{REVISIONYEAR}} | ||
| - | {{#tree:id=OrganizedByTopic|openlevels=0| | ||
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| - | *XPO-1 | ||
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| - | **[[4bsm]], [[4bsn]] – hXPO – human<br /> | ||
| - | **[[1w9c]] – hXPO C terminal 6 heat repeats <br /> | ||
| - | **[[3vyc]] – yXPO (mutant) - yeast<br /> | ||
| - | **[[4fgv]] – XPO – ''Chaetomium thermophilum''<br /> | ||
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| - | *XPO-1 complexes | ||
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| - | **[[3gb8]] – hXPO + RNA U transporter 1 <br /> | ||
| - | **[[3gjx]] – hXPO + RNA U transporter 1 + RAN<br /> | ||
| - | **[[5dis]] – hXPO + RAN + RNA U transporter 1 + MBP<br /> | ||
| - | **[[3m1i]], [[4gpt]], [[4gmx]], [[4hat]], [[4hb2]], [[5jlj]] – yXPO (mutant) + RAN + RANBP1 <br /> | ||
| - | **[[3wyf]] – yXPO + RAN + RANBP1 <br /> | ||
| - | **[[3wyg]] – yXPO + RAN + PKI-α<br /> | ||
| - | **[[5zpu]], [[5ytb]], [[5yst]], [[5uro]] - yXPO (mutant) + RAN + RANBP1 + GTP<br /> | ||
| - | **[[5ysu]] - yXPO (mutant) + RAN + RANBP1 + GTP + plumbagin<br /> | ||
| - | **[[4hau]], [[4hav]], [[4haw]], [[4hax]], [[4hay]], [[4haz]], [[4hb0]], [[4hb3]], [[4hb4]] – yXPO (mutant) + RAN + RANBP1 + antibiotic<br /> | ||
| - | **[[5dh9]], [[5dha]], [[5dhf]], [[5di9]], [[5uwj]], [[5dif]] - yXPO (mutant) + RAN + RANBP1 + signal peptide<br /> | ||
| - | **[[5uwo]], [[5uwp]], [[5uwq]], [[5uwr]], [[5uws]], [[5uwt]], [[5uwu]], [[5uww]], [[5uwi]], [[5uwh]] - yXPO + RAN + RANBP1 + signal peptide<br /> | ||
| - | **[[6cit]], [[6a38]] - yXPO + RAN + RANBP1 + NS2 peptide<br /> | ||
| - | **[[6a3a]], [[6a3b]], [[6a3c]], [[6a3e]] - yXPO (mutant) + RAN + RANBP1 + NS2 peptide<br /> | ||
| - | **[[5xoj]] - yXPO (mutant) + GSP1P + PKI-a + NUP42 peptide + GTP<br /> | ||
| - | **[[3nby]], [[3nbz]], [[3nc0]] – mXPO + RNA U transporter 1 + RANBP1 - mouse<br /> | ||
| - | **[[3nc1]] – mXPO + RANBP1<br /> | ||
| - | **[[2l1l]] – hXPO residues 504-630 + PKI-α - NMR<br /> | ||
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| - | *XPO-t | ||
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| - | **[[3ibv]] – fyXPO – fission yeast<br /> | ||
| - | **[[3icq]] – fyXPO + RAN homolog + RNA <br /> | ||
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| - | *XPO-4 | ||
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| - | **[[5dlq]] – mXPO (mutant) + RAN + EIF5A1<br /> | ||
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| - | *XPO-5 | ||
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| - | **[[5yu7]] – hXPO <br /> | ||
| - | **[[5yu6]] – hXPO + peptide + RAN <br /> | ||
| - | **[[3a6p]] – hXPO + peptide + pre-microRNA <br /> | ||
| - | }} | ||
== References == | == References == | ||
Current revision
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References
- ↑ Lipowsky G, Bischoff FR, Schwarzmaier P, Kraft R, Kostka S, Hartmann E, Kutay U, Gorlich D. Exportin 4: a mediator of a novel nuclear export pathway in higher eukaryotes. EMBO J. 2000 Aug 15;19(16):4362-71. PMID:10944119 doi:http://dx.doi.org/10.1093/emboj/19.16.4362
- ↑ Yi R, Qin Y, Macara IG, Cullen BR. Exportin-5 mediates the nuclear export of pre-microRNAs and short hairpin RNAs. Genes Dev. 2003 Dec 15;17(24):3011-6. Epub 2003 Dec 17. PMID:14681208 doi:http://dx.doi.org/10.1101/gad.1158803
- ↑ Kohler A, Hurt E. Exporting RNA from the nucleus to the cytoplasm. Nat Rev Mol Cell Biol. 2007 Oct;8(10):761-73. PMID:17786152 doi:http://dx.doi.org/10.1038/nrm2255
- ↑ Cook AG, Fukuhara N, Jinek M, Conti E. Structures of the tRNA export factor in the nuclear and cytosolic states. Nature. 2009 Sep 3;461(7260):60-5. PMID:19680239 doi:10.1038/nature08394
