3o3z

From Proteopedia

(Difference between revisions)

Current revision

Complex of a chimeric alpha/beta-peptide based on the gp41 CHR domain bound to a gp41 NHR domain peptide

Structural highlights

3o3z is a 2 chain structure with sequence from Synthetic construct. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.6Å
Ligands:	, , , , , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

Q9YP39_9HIV1 The envelope glyprotein gp160 precursor down-modulates cell surface CD4 antigen by interacting with it in the endoplasmic reticulum and blocking its transport to the cell surface (By similarity).[RuleBase:RU004292][SAAS:SAAS000328_004_020447] The gp120-gp41 heterodimer allows rapid transcytosis of the virus through CD4 negative cells such as simple epithelial monolayers of the intestinal, rectal and endocervical epithelial barriers. Both gp120 and gp41 specifically recognize glycosphingolipids galactosyl-ceramide (GalCer) or 3' sulfo-galactosyl-ceramide (GalS) present in the lipid rafts structures of epithelial cells. Binding to these alternative receptors allows the rapid transcytosis of the virus through the epithelial cells. This transcytotic vesicle-mediated transport of virions from the apical side to the basolateral side of the epithelial cells does not involve infection of the cells themselves (By similarity).

Publication Abstract from PubMed

Infection of cells by HIV depends upon profound structural rearrangements within the trimeric viral protein gp41. Critical to this process is the formation of a six-helix bundle in which a set of three N-terminal heptad repeat (NHR) helices assemble to form a core displaying long grooves that provide docking sites for three C-terminal heptad repeat (CHR) helices. We report experiments designed to discriminate between two alternative hypotheses regarding the source of affinity between individual CHR helices and the complementary groove: (1) affinity is dominated by interactions of a small cluster of side chains at one end of the CHR helix; or (2) affinity depends upon interactions distributed across the long CHR helix. We have employed two complementary experimental designs, and results from both favor the latter hypothesis.

Broad Distribution of Energetically Important Contacts across an Extended Protein Interface.,Johnson LM, Horne WS, Gellman SH J Am Chem Soc. 2011 Jul 6;133(26):10038-41. Epub 2011 Jun 14. PMID:21644542^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Johnson LM, Horne WS, Gellman SH. Broad Distribution of Energetically Important Contacts across an Extended Protein Interface. J Am Chem Soc. 2011 Jul 6;133(26):10038-41. Epub 2011 Jun 14. PMID:21644542 doi:10.1021/ja203358t

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3o3z"

Categories: Large Structures | Synthetic construct | Gellman SH | Horne WS | Johnson LM

@@ Line 3: / Line 3: @@
 <StructureSection load='3o3z' size='340' side='right'caption='[[3o3z]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3o3z]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3O3Z OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3O3Z FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3o3z]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3O3Z OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3O3Z FirstGlance]. <br>
-</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></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.6&#8491;</td></tr>
-<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</scene>, <scene name='pdbligand=B3E:(3S)-3-AMINOHEXANEDIOIC+ACID'>B3E</scene>, <scene name='pdbligand=B3T:3-AMINO-2,3,5-TRIDEOXY-D-THREO-PENTONIC+ACID'>B3T</scene>, <scene name='pdbligand=NH2:AMINO+GROUP'>NH2</scene>, <scene name='pdbligand=XCP:(1S,2S)-2-AMINOCYCLOPENTANECARBOXYLIC+ACID'>XCP</scene>, <scene name='pdbligand=XPC:(3S,4R)-4-AMINOPYRROLIDINE-3-CARBOXYLIC+ACID'>XPC</scene></td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</scene>, <scene name='pdbligand=B3E:(3S)-3-AMINOHEXANEDIOIC+ACID'>B3E</scene>, <scene name='pdbligand=B3T:3-AMINO-2,3,5-TRIDEOXY-D-THREO-PENTONIC+ACID'>B3T</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NH2:AMINO+GROUP'>NH2</scene>, <scene name='pdbligand=XCP:(1S,2S)-2-AMINOCYCLOPENTANECARBOXYLIC+ACID'>XCP</scene>, <scene name='pdbligand=XPC:(3S,4R)-4-AMINOPYRROLIDINE-3-CARBOXYLIC+ACID'>XPC</scene></td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3o3x|3o3x]], [[3o3y|3o3y]], [[3o40|3o40]], [[3o42|3o42]], [[3o43|3o43]]</div></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=3o3z FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3o3z OCA], [https://pdbe.org/3o3z PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3o3z RCSB], [https://www.ebi.ac.uk/pdbsum/3o3z PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3o3z ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/Q9YP39_9HIV1 Q9YP39_9HIV1]] The envelope glyprotein gp160 precursor down-modulates cell surface CD4 antigen by interacting with it in the endoplasmic reticulum and blocking its transport to the cell surface (By similarity).[RuleBase:RU004292][SAAS:SAAS000328_004_020447]  The gp120-gp41 heterodimer allows rapid transcytosis of the virus through CD4 negative cells such as simple epithelial monolayers of the intestinal, rectal and endocervical epithelial barriers. Both gp120 and gp41 specifically recognize glycosphingolipids galactosyl-ceramide (GalCer) or 3' sulfo-galactosyl-ceramide (GalS) present in the lipid rafts structures of epithelial cells. Binding to these alternative receptors allows the rapid transcytosis of the virus through the epithelial cells. This transcytotic vesicle-mediated transport of virions from the apical side to the basolateral side of the epithelial cells does not involve infection of the cells themselves (By similarity).
+[https://www.uniprot.org/uniprot/Q9YP39_9HIV1 Q9YP39_9HIV1] The envelope glyprotein gp160 precursor down-modulates cell surface CD4 antigen by interacting with it in the endoplasmic reticulum and blocking its transport to the cell surface (By similarity).[RuleBase:RU004292][SAAS:SAAS000328_004_020447]  The gp120-gp41 heterodimer allows rapid transcytosis of the virus through CD4 negative cells such as simple epithelial monolayers of the intestinal, rectal and endocervical epithelial barriers. Both gp120 and gp41 specifically recognize glycosphingolipids galactosyl-ceramide (GalCer) or 3' sulfo-galactosyl-ceramide (GalS) present in the lipid rafts structures of epithelial cells. Binding to these alternative receptors allows the rapid transcytosis of the virus through the epithelial cells. This transcytotic vesicle-mediated transport of virions from the apical side to the basolateral side of the epithelial cells does not involve infection of the cells themselves (By similarity).
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 25: / Line 24: @@
 </StructureSection>
 [[Category: Large Structures]]
-[[Category: Gellman, S H]]
+[[Category: Synthetic construct]]
-[[Category: Horne, W S]]
+[[Category: Gellman SH]]
-[[Category: Johnson, L M]]
+[[Category: Horne WS]]
-[[Category: Hiv fusion inhibitor]]
+[[Category: Johnson LM]]
-[[Category: Mixed alpha-peptide/beta-peptide backbone]]
-[[Category: Viral protein]]

3o3z

From Proteopedia

Current revision

Complex of a chimeric alpha/beta-peptide based on the gp41 CHR domain bound to a gp41 NHR domain peptide

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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