1txu: Difference between revisions

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-[[Image:1txu.jpg|left|200px]]
- {{Structure
+==Crystal Structure of the Vps9 Domain of Rabex-5==
-|PDB= 1txu |SIZE=350|CAPTION= <scene name='initialview01'>1txu</scene>, resolution 2.35&Aring;
+<StructureSection load='1txu' size='340' side='right'caption='[[1txu]], [[Resolution|resolution]] 2.35&Aring;' scene=''>
-|SITE=
+== Structural highlights ==
-|LIGAND= <scene name='pdbligand=MG:MAGNESIUM ION'>MG</scene>
+<table><tr><td colspan='2'>[[1txu]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TXU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1TXU FirstGlance]. <br>
-|ACTIVITY=
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.35&#8491;</td></tr>
-|GENE= RABGEF1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></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=1txu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1txu OCA], [https://pdbe.org/1txu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1txu RCSB], [https://www.ebi.ac.uk/pdbsum/1txu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1txu ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/RABX5_HUMAN RABX5_HUMAN] Rab effector protein acting as linker between gamma-adaptin, RAB4A or RAB5A. Involved in endocytic membrane fusion and membrane trafficking of recycling endosomes. Stimulates nucleotide exchange on RAB5A. Can act as a ubiquitin ligase (By similarity).<ref>PMID:9323142</ref> <ref>PMID:11452015</ref> <ref>PMID:15339665</ref>
+== 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/tx/1txu_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1txu ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+The Rab5 GTPase, an essential regulator of endocytosis and endosome biogenesis, is activated by guanine-nucleotide exchange factors (GEFs) that contain a Vps9 domain. Here, we show that the catalytic core of the Rab GEF Rabex-5 has a tandem architecture consisting of a Vps9 domain stabilized by an indispensable helical bundle. A family-wide analysis of Rab specificity demonstrates high selectivity for Rab5 subfamily GTPases. Conserved exchange determinants map to a common surface of the Vps9 domain, which recognizes invariant aromatic residues in the switch regions of Rab GTPases and selects for the Rab5 subfamily by requiring a small nonacidic residue preceding a critical phenylalanine in the switch I region. These and other observations reveal unexpected similarity with the Arf exchange site in the Sec7 domain.
-'''Crystal Structure of the Vps9 Domain of Rabex-5'''
+Structure, exchange determinants, and family-wide rab specificity of the tandem helical bundle and Vps9 domains of Rabex-5.,Delprato A, Merithew E, Lambright DG Cell. 2004 Sep 3;118(5):607-17. PMID:15339665<ref>PMID:15339665</ref>
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
+<div class="pdbe-citations 1txu" style="background-color:#fffaf0;"></div>
-==Overview==
+==See Also==
-The Rab5 GTPase, an essential regulator of endocytosis and endosome biogenesis, is activated by guanine-nucleotide exchange factors (GEFs) that contain a Vps9 domain. Here, we show that the catalytic core of the Rab GEF Rabex-5 has a tandem architecture consisting of a Vps9 domain stabilized by an indispensable helical bundle. A family-wide analysis of Rab specificity demonstrates high selectivity for Rab5 subfamily GTPases. Conserved exchange determinants map to a common surface of the Vps9 domain, which recognizes invariant aromatic residues in the switch regions of Rab GTPases and selects for the Rab5 subfamily by requiring a small nonacidic residue preceding a critical phenylalanine in the switch I region. These and other observations reveal unexpected similarity with the Arf exchange site in the Sec7 domain.
+*[[Rab5 GDP/GTP exchange factor|Rab5 GDP/GTP exchange factor]]
+== References ==
-==About this Structure==
+<references/>
-TXU is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TXU OCA].
+__TOC__
+</StructureSection>
-==Reference==
-Structure, exchange determinants, and family-wide rab specificity of the tandem helical bundle and Vps9 domains of Rabex-5., Delprato A, Merithew E, Lambright DG, Cell. 2004 Sep 3;118(5):607-17. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15339665 15339665]
 [[Category: Homo sapiens]]
-[[Category: Single protein]]
+[[Category: Large Structures]]
-[[Category: Delprato, A.]]
+[[Category: Delprato A]]
-[[Category: Lambright, D G.]]
+[[Category: Lambright DG]]
-[[Category: Merithew, E.]]
+[[Category: Merithew E]]
-[[Category: MG]]
-[[Category: gef]]
-[[Category: rab5 guanine-nucleotide exchange factor]]
-[[Category: vps9 domain]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 14:24:37 2008''