Exportin: Difference between revisions

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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<ref>PMID:36727672</ref>.<br />
*'''XPO-4''' mediates nuclear transport of eukaryotic translation initiation factor 5A<ref>PMID:10944119</ref>.<br />
*'''XPO-5''' mediates nuclear transport of pre-miroRNAs and short hairpin RNAs<ref>PMID:14681208</ref>.<br />
*'''XPO-t''' or '''karyopherin''' is a nuclear transport receptor involved in the export of tRNA to the cytoplasm<ref>PMID:22944664</ref>.<br />


==Structural highlights ==
==Structural highlights ==
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<scene name='59/592125/Cv/12'>Mg coordination site</scene> (PDB code [[3icq]]).<ref>PMID:19680239</ref>  
<scene name='59/592125/Cv/12'>Mg coordination site</scene> (PDB code [[3icq]]).<ref>PMID:19680239</ref>  
</StructureSection>


==3D structures of exportin==
==3D structures of exportin==
[[Exportin 3D structures]]


Updated on {{REVISIONDAY2}}-{{MONTHNAME|{{REVISIONMONTH}}}}-{{REVISIONYEAR}}
</StructureSection>
{{#tree:id=OrganizedByTopic|openlevels=0|
 
*XPO-1
 
**[[4bsm]], [[4bsn]] – hXPO – human<br />
**[[1w9c]] – hXPO C terminal 6 heat repeats <br />
**[[3vyc]] – yXPO (mutant) - yeast<br />
**[[4fgv]] – XPO – ''Chaetomium thermophilum''<br />
 
*XPO-1 complexes
 
**[[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 />
**[[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 />
**[[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 />
 
*XPO-t
 
**[[3ibv]] – fyXPO – fission yeast<br />
**[[3icq]] – fyXPO + RAN homolog + RNA <br />
 
*XPO-4
 
**[[5dlq]] – mXPO (mutant) + RAN + EIF5A1<br />
 
*XPO-5
 
**[[3a6p]] – hXPO + peptide + pre-microRNA <br />
}}


== References ==
== References ==

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

Michal Harel, Alexander Berchansky