View source for 1t2m


==Solution Structure Of The Pdz Domain Of AF-6==
<StructureSection load='1t2m' size='340' side='right'caption='[[1t2m]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1t2m]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1T2M OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1T2M FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</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=1t2m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1t2m OCA], [https://pdbe.org/1t2m PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1t2m RCSB], [https://www.ebi.ac.uk/pdbsum/1t2m PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1t2m ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/AFAD_HUMAN AFAD_HUMAN] Note=A chromosomal aberration involving MLLT4 is associated with acute leukemias. Translocation t(6;11)(q27;q23) with MLL/HRX. The result is a rogue activator protein.
== Function ==
[https://www.uniprot.org/uniprot/AFAD_HUMAN AFAD_HUMAN] Belongs to an adhesion system, probably together with the E-cadherin-catenin system, which plays a role in the organization of homotypic, interneuronal and heterotypic cell-cell adherens junctions (AJs). Nectin- and actin-filament-binding protein that connects nectin to the actin cytoskeleton.
== 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/t2/1t2m_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=1t2m ConSurf].
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== Publication Abstract from PubMed ==
AF-6 is a key molecule essential for structure organization of cell-cell junction of polarized epithelia. It belongs to a novel cell-cell adhesion system. The AF-6 PDZ domain mediates interactions by binding to a specific amino acid sequence in target proteins. Here we report the solution structure of the AF-6 PDZ domain determined by NMR. Previously, the AF-6 PDZ domain was considered to be a class II PDZ domain. However we found that a unique hydrophilic amino acid, Gln70, at position alphaB1 makes the alphaB/betaB groove of the AF-6 PDZ domain significantly different from that of the canonical class II PDZ domain. The AF-6 PDZ domain does not have the second hydrophobic binding pocket, and the N-terminal end of alphaB is closer to betaB. Using BIACORE and NMR chemical shift perturbation experiments, we have studied the binding characteristics of the PDZ domain to the C-terminal peptide of Neurexin, KKNKDKEYYV, and that of Bcr, KRQSILFSTEV. The C-terminal peptide of Neurexin is a class II ligand, whereas that of Bcr is a class I ligand. The dissociation constants of these ligands were 4.08 x 10(-7) and 2.23 x 10(-6) m, respectively. Each of the four C-terminal positions in Neurexin and Bcr may contribute to the interaction. The three-dimensional models of the AF-6 PDZ-Neurexin C-terminal peptide complex and the AF-6 PDZ-Bcr C-terminal peptide complex were built up by molecular dynamics simulations. Unlike the canonical class II PDZ domain, Ala74 at alphaB5 rather than the residue at alphaB1 makes direct hydrophobic contact with the side chain of Tyr at the -2 position of the ligand.

Solution structure of AF-6 PDZ domain and its interaction with the C-terminal peptides from Neurexin and Bcr.,Zhou H, Xu Y, Yang Y, Huang A, Wu J, Shi Y J Biol Chem. 2005 Apr 8;280(14):13841-7. Epub 2005 Jan 31. PMID:15684424<ref>PMID:15684424</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 1t2m" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Huang AD]]
[[Category: Shi YY]]
[[Category: Wu JH]]
[[Category: Xu YQ]]
[[Category: Zhou H]]