7lp1: Difference between revisions
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==Structure of Nedd4L WW3 domain== | ==Structure of Nedd4L WW3 domain== | ||
<StructureSection load='7lp1' size='340' side='right'caption='[[7lp1]]' scene=''> | <StructureSection load='7lp1' size='340' side='right'caption='[[7lp1]], [[Resolution|resolution]] 1.35Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7LP1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7LP1 FirstGlance]. <br> | <table><tr><td colspan='2'>[[7lp1]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7LP1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7LP1 FirstGlance]. <br> | ||
</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=7lp1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7lp1 OCA], [https://pdbe.org/7lp1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7lp1 RCSB], [https://www.ebi.ac.uk/pdbsum/7lp1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7lp1 ProSAT]</span></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NO3:NITRATE+ION'>NO3</scene></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">NEDD4L, KIAA0439, NEDL3 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr> | |||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Transferase Transferase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.3.2.26 2.3.2.26] </span></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=7lp1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7lp1 OCA], [https://pdbe.org/7lp1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7lp1 RCSB], [https://www.ebi.ac.uk/pdbsum/7lp1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7lp1 ProSAT]</span></td></tr> | |||
</table> | </table> | ||
== Function == | |||
[[https://www.uniprot.org/uniprot/NED4L_HUMAN NED4L_HUMAN]] E3 ubiquitin-protein ligase which accepts ubiquitin from an E2 ubiquitin-conjugating enzyme in the form of a thioester and then directly transfers the ubiquitin to targeted substrates. Inhibits TGF-beta signaling by triggering SMAD2 and TGFBR1 ubiquitination and proteasome-dependent degradation. Promotes ubiquitination and internalization of various plasma membrane channels such as ENaC, Nav1.2, Nav1.3, Nav1.5, Nav1.7, Nav1.8, Kv1.3, EAAT1 or CLC5. Promotes ubiquitination and degradation of SGK1 and TNK2.<ref>PMID:12911626</ref> <ref>PMID:15217910</ref> <ref>PMID:15489223</ref> <ref>PMID:15040001</ref> <ref>PMID:15496141</ref> <ref>PMID:15576372</ref> <ref>PMID:19144635</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Like most enveloped viruses, HIV must acquire a lipid membrane as it assembles and buds through the plasma membrane of infected cells to spread infection. Several sets of host cell machinery facilitate this process, including proteins of the endosomal sorting complexes required for transport pathway, which mediates the membrane fission reaction required to complete viral budding, as well as angiomotin (AMOT) and NEDD4L, which bind one another and promote virion membrane envelopment. AMOT and NEDD4L interact through the four NEDD4L WW domains and three different AMOT Pro-Pro-x (any amino acid)-Tyr (PPxY) motifs, but these interactions are not yet well defined. Here, we report that individual AMOT PPxY and NEDD4L WW domains interact with the following general affinity hierarchies: AMOT PPxY1>PPxY2>PPxY3 and NEDD4L WW3>WW2>WW1 approximately WW4. The unusually high-affinity of the AMOT PPxY1-NEDD4L WW3 interaction accounts for most of the AMOT-NEDD4L binding and is critical for stimulating HIV-1 release. Comparative structural, binding, and virological analyses reveal that complementary ionic and hydrophobic contacts on both sides of the WW-PPxY core interaction account for the unusually high affinity of the AMOT PPxY1-NEDD4L WW3 interaction. Taken together, our studies reveal how the first AMOT PPxY1 motif binds the third NEDD4L WW domain to stimulate HIV-1 viral envelopment and promote infectivity. | |||
Interactions between AMOT PPxY motifs and NEDD4L WW domains function in HIV-1 release.,Rheinemann L, Thompson T, Mercenne G, Paine EL, Peterson FC, Volkman BF, Alam SL, Alian A, Sundquist WI J Biol Chem. 2021 Jul 17;297(2):100975. doi: 10.1016/j.jbc.2021.100975. PMID:34284061<ref>PMID:34284061</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 7lp1" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Human]] | |||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Alam | [[Category: Transferase]] | ||
[[Category: Alian A]] | [[Category: Alam, S L]] | ||
[[Category: Rheinemann L]] | [[Category: Alian, A]] | ||
[[Category: Sundquist | [[Category: Rheinemann, L]] | ||
[[Category: Thompson T]] | [[Category: Sundquist, W I]] | ||
[[Category: Thompson, T]] | |||
[[Category: E3 ubiquitin ligase]] | |||
[[Category: Ligase]] | |||
[[Category: Nedd4l]] | |||
[[Category: Ppxy binding]] | |||
Revision as of 09:34, 25 August 2021
Structure of Nedd4L WW3 domainStructure of Nedd4L WW3 domain
Structural highlights
Function[NED4L_HUMAN] E3 ubiquitin-protein ligase which accepts ubiquitin from an E2 ubiquitin-conjugating enzyme in the form of a thioester and then directly transfers the ubiquitin to targeted substrates. Inhibits TGF-beta signaling by triggering SMAD2 and TGFBR1 ubiquitination and proteasome-dependent degradation. Promotes ubiquitination and internalization of various plasma membrane channels such as ENaC, Nav1.2, Nav1.3, Nav1.5, Nav1.7, Nav1.8, Kv1.3, EAAT1 or CLC5. Promotes ubiquitination and degradation of SGK1 and TNK2.[1] [2] [3] [4] [5] [6] [7] Publication Abstract from PubMedLike most enveloped viruses, HIV must acquire a lipid membrane as it assembles and buds through the plasma membrane of infected cells to spread infection. Several sets of host cell machinery facilitate this process, including proteins of the endosomal sorting complexes required for transport pathway, which mediates the membrane fission reaction required to complete viral budding, as well as angiomotin (AMOT) and NEDD4L, which bind one another and promote virion membrane envelopment. AMOT and NEDD4L interact through the four NEDD4L WW domains and three different AMOT Pro-Pro-x (any amino acid)-Tyr (PPxY) motifs, but these interactions are not yet well defined. Here, we report that individual AMOT PPxY and NEDD4L WW domains interact with the following general affinity hierarchies: AMOT PPxY1>PPxY2>PPxY3 and NEDD4L WW3>WW2>WW1 approximately WW4. The unusually high-affinity of the AMOT PPxY1-NEDD4L WW3 interaction accounts for most of the AMOT-NEDD4L binding and is critical for stimulating HIV-1 release. Comparative structural, binding, and virological analyses reveal that complementary ionic and hydrophobic contacts on both sides of the WW-PPxY core interaction account for the unusually high affinity of the AMOT PPxY1-NEDD4L WW3 interaction. Taken together, our studies reveal how the first AMOT PPxY1 motif binds the third NEDD4L WW domain to stimulate HIV-1 viral envelopment and promote infectivity. Interactions between AMOT PPxY motifs and NEDD4L WW domains function in HIV-1 release.,Rheinemann L, Thompson T, Mercenne G, Paine EL, Peterson FC, Volkman BF, Alam SL, Alian A, Sundquist WI J Biol Chem. 2021 Jul 17;297(2):100975. doi: 10.1016/j.jbc.2021.100975. PMID:34284061[8] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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