2vty: Difference between revisions
No edit summary |
No edit summary |
||
| (8 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
==Vaccinia virus anti-apoptotic F1L is a novel Bcl-2-like domain swapped dimer== | |||
<StructureSection load='2vty' size='340' side='right'caption='[[2vty]], [[Resolution|resolution]] 2.10Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2vty]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Vaccinia_virus Vaccinia virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2VTY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2VTY FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1Å</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=2vty FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2vty OCA], [https://pdbe.org/2vty PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2vty RCSB], [https://www.ebi.ac.uk/pdbsum/2vty PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2vty ProSAT]</span></td></tr> | ||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/F1_VACCA F1_VACCA] Protein with a BCL2-like fold which is essential for survival of infected cells. | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Apoptosis is an important part of the host's defense mechanism for eliminating invading pathogens. Some viruses express proteins homologous in sequence and function to mammalian pro-survival Bcl-2 proteins. Anti-apoptotic F1L expressed by vaccinia virus is essential for survival of infected cells, but it bears no discernable sequence homology to proteins other than its immediate orthologues in related pox viruses. Here we report that the crystal structure of F1L reveals a Bcl-2-like fold with an unusual N-terminal extension. The protein forms a novel domain-swapped dimer in which the alpha1 helix is the exchanged domain. Binding studies reveal an atypical BH3-binding profile, with sub-micromolar affinity only for the BH3 peptide of pro-apoptotic Bim and low micromolar affinity for the BH3 peptides of Bak and Bax. This binding interaction is sensitive to F1L mutations within the predicted canonical BH3-binding groove, suggesting parallels between how vaccinia virus F1L and myxoma virus M11L bind BH3 domains. Structural comparison of F1L with other Bcl-2 family members reveals a novel sequence signature that redefines the BH4 domain as a structural motif present in both pro- and anti-apoptotic Bcl-2 members, including viral Bcl-2-like proteins. | |||
Vaccinia virus anti-apoptotic F1L is a novel Bcl-2-like domain-swapped dimer that binds a highly selective subset of BH3-containing death ligands.,Kvansakul M, Yang H, Fairlie WD, Czabotar PE, Fischer SF, Perugini MA, Huang DC, Colman PM Cell Death Differ. 2008 Oct;15(10):1564-71. Epub 2008 Jun 13. PMID:18551131<ref>PMID:18551131</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 2vty" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | [[Category: Large Structures]] | ||
== | |||
[[Category: | |||
[[Category: Vaccinia virus]] | [[Category: Vaccinia virus]] | ||
[[Category: | [[Category: Colman PM]] | ||
[[Category: | [[Category: Czabotar PE]] | ||
[[Category: | [[Category: Fairlie WD]] | ||
[[Category: | [[Category: Fischer SF]] | ||
[[Category: Huang DCS]] | |||
[[Category: Kvansakul M]] | |||
[[Category: Perugini MA]] | |||
[[Category: Yang H]] | |||
Latest revision as of 14:17, 3 January 2024
Vaccinia virus anti-apoptotic F1L is a novel Bcl-2-like domain swapped dimerVaccinia virus anti-apoptotic F1L is a novel Bcl-2-like domain swapped dimer
Structural highlights
FunctionF1_VACCA Protein with a BCL2-like fold which is essential for survival of infected cells. Publication Abstract from PubMedApoptosis is an important part of the host's defense mechanism for eliminating invading pathogens. Some viruses express proteins homologous in sequence and function to mammalian pro-survival Bcl-2 proteins. Anti-apoptotic F1L expressed by vaccinia virus is essential for survival of infected cells, but it bears no discernable sequence homology to proteins other than its immediate orthologues in related pox viruses. Here we report that the crystal structure of F1L reveals a Bcl-2-like fold with an unusual N-terminal extension. The protein forms a novel domain-swapped dimer in which the alpha1 helix is the exchanged domain. Binding studies reveal an atypical BH3-binding profile, with sub-micromolar affinity only for the BH3 peptide of pro-apoptotic Bim and low micromolar affinity for the BH3 peptides of Bak and Bax. This binding interaction is sensitive to F1L mutations within the predicted canonical BH3-binding groove, suggesting parallels between how vaccinia virus F1L and myxoma virus M11L bind BH3 domains. Structural comparison of F1L with other Bcl-2 family members reveals a novel sequence signature that redefines the BH4 domain as a structural motif present in both pro- and anti-apoptotic Bcl-2 members, including viral Bcl-2-like proteins. Vaccinia virus anti-apoptotic F1L is a novel Bcl-2-like domain-swapped dimer that binds a highly selective subset of BH3-containing death ligands.,Kvansakul M, Yang H, Fairlie WD, Czabotar PE, Fischer SF, Perugini MA, Huang DC, Colman PM Cell Death Differ. 2008 Oct;15(10):1564-71. Epub 2008 Jun 13. PMID:18551131[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
|
| ||||||||||||||||