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New page: left|200px<br /> <applet load="1cl7" size="450" color="white" frame="true" align="right" spinBox="true" caption="1cl7, resolution 3.0Å" /> '''ANTI HIV1 PROTEASE F...
 
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[[Image:1cl7.gif|left|200px]]<br />
<applet load="1cl7" size="450" color="white" frame="true" align="right" spinBox="true"
caption="1cl7, resolution 3.0&Aring;" />
'''ANTI HIV1 PROTEASE FAB'''<br />


==Overview==
==ANTI HIV1 PROTEASE FAB==
The monoclonal antibody 1696, directed against the HIV-1 protease, displays strong inhibitory effects toward the catalytic activity of the, enzyme of both the HIV-1 and HIV-2 isolates. This antibody cross-reacts, with peptides that include the N-terminus of the enzyme, a region that is, well conserved in sequence among different viral strains and which, furthermore, is crucial for homodimerization to the active enzymatic form., This observation, as well as antigen-binding studies in the presence of an, active site inhibitor, suggest that 1696 inhibits the HIV protease by, destabilizing its active homodimeric form. To characterize further how the, antibody 1696 inhibits the HIV-1 and HIV-2 proteases, we have solved the, crystal structure of its Fab fragment by molecular replacement and refined, it at 3.0 A resolution. The antigen binding site has a deep cavity at its, center, which is lined mainly by acidic and hydrophobic residues, and is, large enough to accommodate several antigen residues. The structure of the, Fab 1696 could form a starting basis for the design of alternative HIV, protease-inhibiting molecules of broad specificity.
<StructureSection load='1cl7' size='340' side='right'caption='[[1cl7]], [[Resolution|resolution]] 3.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1cl7]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CL7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1CL7 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]] 3&#8491;</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=1cl7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cl7 OCA], [https://pdbe.org/1cl7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1cl7 RCSB], [https://www.ebi.ac.uk/pdbsum/1cl7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1cl7 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/IGH1M_MOUSE IGH1M_MOUSE]
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/cl/1cl7_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1cl7 ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The monoclonal antibody 1696, directed against the HIV-1 protease, displays strong inhibitory effects toward the catalytic activity of the enzyme of both the HIV-1 and HIV-2 isolates. This antibody cross-reacts with peptides that include the N-terminus of the enzyme, a region that is well conserved in sequence among different viral strains and which, furthermore, is crucial for homodimerization to the active enzymatic form. This observation, as well as antigen-binding studies in the presence of an active site inhibitor, suggest that 1696 inhibits the HIV protease by destabilizing its active homodimeric form. To characterize further how the antibody 1696 inhibits the HIV-1 and HIV-2 proteases, we have solved the crystal structure of its Fab fragment by molecular replacement and refined it at 3.0 A resolution. The antigen binding site has a deep cavity at its center, which is lined mainly by acidic and hydrophobic residues, and is large enough to accommodate several antigen residues. The structure of the Fab 1696 could form a starting basis for the design of alternative HIV protease-inhibiting molecules of broad specificity.


==About this Structure==
Inhibition of the HIV-1 and HIV-2 proteases by a monoclonal antibody.,Lescar J, Brynda J, Rezacova P, Stouracova R, Riottot MM, Chitarra V, Fabry M, Horejsi M, Sedlacek J, Bentley GA Protein Sci. 1999 Dec;8(12):2686-96. PMID:10631984<ref>PMID:10631984</ref>
1CL7 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1CL7 OCA].


==Reference==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
Inhibition of the HIV-1 and HIV-2 proteases by a monoclonal antibody., Lescar J, Brynda J, Rezacova P, Stouracova R, Riottot MM, Chitarra V, Fabry M, Horejsi M, Sedlacek J, Bentley GA, Protein Sci. 1999 Dec;8(12):2686-96. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=10631984 10631984]
</div>
<div class="pdbe-citations 1cl7" style="background-color:#fffaf0;"></div>
 
==See Also==
*[[Antibody 3D structures|Antibody 3D structures]]
*[[Sandbox 20009|Sandbox 20009]]
*[[3D structures of non-human antibody|3D structures of non-human antibody]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Mus musculus]]
[[Category: Mus musculus]]
[[Category: Single protein]]
[[Category: Bentley GA]]
[[Category: Bentley, G.A.]]
[[Category: Lescar J]]
[[Category: Lescar, J.]]
[[Category: cross-reactivity]]
[[Category: enzyme inhibition]]
[[Category: fab fragment]]
[[Category: hiv1 protease]]
[[Category: immunoglobulin]]
 
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Thu Nov  8 13:57:14 2007''

Latest revision as of 05:53, 9 August 2023

ANTI HIV1 PROTEASE FAB

1cl7, resolution 3.00Å

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