4ga2: Difference between revisions
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==Structure of the N-terminal domain of Nup358== | ==Structure of the N-terminal domain of Nup358== | ||
<StructureSection load='4ga2' size='340' side='right' caption='[[4ga2]], [[Resolution|resolution]] 0.95Å' scene=''> | <StructureSection load='4ga2' size='340' side='right'caption='[[4ga2]], [[Resolution|resolution]] 0.95Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4ga2]] is a 1 chain structure with sequence from [ | <table><tr><td colspan='2'>[[4ga2]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Pan_troglodytes Pan troglodytes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4GA2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4GA2 FirstGlance]. <br> | ||
</td></tr> | </td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4ga2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ga2 OCA], [https://pdbe.org/4ga2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ga2 RCSB], [https://www.ebi.ac.uk/pdbsum/4ga2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ga2 ProSAT]</span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | |||
</table> | </table> | ||
== Function == | == Function == | ||
[ | [https://www.uniprot.org/uniprot/RBP2_PANTR RBP2_PANTR] E3 SUMO-protein ligase which facilitates SUMO1 and SUMO2 conjugation by UBE2I. Involved in transport factor (Ran-GTP, karyopherin)-mediated protein import via the F-G repeat-containing domain which acts as a docking site for substrates. Component of the nuclear export pathway. Specific docking site for the nuclear export factor exportin-1. Sumoylates PML at 'Lys-490' which is essential for the proper assembly of PML-NB (By similarity). Binds single-stranded RNA (in vitro).<ref>PMID:22959972</ref> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: Pan troglodytes]] | ||
[[Category: | [[Category: Hoelz A]] | ||
[[Category: | [[Category: Kassube SA]] | ||
[[Category: | [[Category: Lin DH]] | ||
[[Category: | [[Category: Stuwe T]] | ||
Revision as of 09:44, 26 October 2022
Structure of the N-terminal domain of Nup358Structure of the N-terminal domain of Nup358
Structural highlights
FunctionRBP2_PANTR E3 SUMO-protein ligase which facilitates SUMO1 and SUMO2 conjugation by UBE2I. Involved in transport factor (Ran-GTP, karyopherin)-mediated protein import via the F-G repeat-containing domain which acts as a docking site for substrates. Component of the nuclear export pathway. Specific docking site for the nuclear export factor exportin-1. Sumoylates PML at 'Lys-490' which is essential for the proper assembly of PML-NB (By similarity). Binds single-stranded RNA (in vitro).[1] Publication Abstract from PubMedKey steps in mRNA export are the nuclear assembly of messenger ribonucleoprotein particles (mRNPs), the translocation of mRNPs through the nuclear pore complex (NPC), and the mRNP remodeling events at the cytoplasmic side of the NPC. Nup358/RanBP2 is a constituent of the cytoplasmic filaments of the NPC specific to higher eukaryotes and provides a multitude of binding sites for the nucleocytoplasmic transport machinery. Here, we present the crystal structure of the Nup358 N-terminal domain (NTD) at 0.95A resolution. The structure reveals an alpha-helical domain that harbors three central tetratricopeptide repeats (TPRs), flanked on each side by an additional solvating amphipathic alpha helix. Overall, the NTD adopts an unusual extended conformation that lacks the characteristic peptide-binding groove observed in canonical TPR domains. Strikingly, the vast majority of the NTD surface exhibits an evolutionarily conserved, positive electrostatic potential, and we demonstrate that the NTD possesses the capability to bind single-stranded RNA in solution. Together, these data suggest that the NTD contributes to mRNP remodeling events at the cytoplasmic face of the NPC. Crystal Structure of the N-Terminal Domain of Nup358/RanBP2.,Kassube SA, Stuwe T, Lin DH, Antonuk CD, Napetschnig J, Blobel G, Hoelz A J Mol Biol. 2012 Sep 7. pii: S0022-2836(12)00719-X. doi:, 10.1016/j.jmb.2012.08.026. PMID:22959972[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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