View source for 2bme


==high resolution structure of GppNHp-bound human Rab4a==
<StructureSection load='2bme' size='340' side='right'caption='[[2bme]], [[Resolution|resolution]] 1.57&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2bme]] is a 4 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=2BME OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BME 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]] 1.57&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene>, <scene name='pdbligand=GNP:PHOSPHOAMINOPHOSPHONIC+ACID-GUANYLATE+ESTER'>GNP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</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=2bme FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bme OCA], [https://pdbe.org/2bme PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2bme RCSB], [https://www.ebi.ac.uk/pdbsum/2bme PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2bme ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RAB4A_HUMAN RAB4A_HUMAN] Protein transport. Probably involved in vesicular traffic (By similarity).
== 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/bm/2bme_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=2bme ConSurf].
<div style="clear:both"></div>
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== Publication Abstract from PubMed ==
The Ras-related human GTPase Rab4a is involved in the regulation of endocytosis through the sorting and recycling of early endosomes. Towards further insight, we have determined the three-dimensional crystal structure of human Rab4a in its GppNHp-bound state to 1.6 Angstroms resolution and in its GDP-bound state to 1.8 Angstroms resolution, respectively. Despite the similarity of the overall structure with other Rab proteins, Rab4a displays significant differences. The structures are discussed with respect to the recently determined structure of human Rab5a and its complex with the Rab5-binding domain of the bivalent effector Rabaptin-5. The Rab4 specific residue His39 modulates the nucleotide binding pocket giving rise to a reduced rate for nucleotide hydrolysis and exchange. In comparison to Rab5, Rab4a has a different GDP-bound conformation within switch 1 region and displays shifts in position and orientation of the hydrophobic triad. The observed differences at the S2-L3-S3 region represent a new example of structural plasticity among Rab proteins and may provide a structural basis to understand the differential binding of similar effector proteins.

High resolution crystal structures of human Rab4a in its active and inactive conformations.,Huber SK, Scheidig AJ FEBS Lett. 2005 May 23;579(13):2821-9. Epub 2005 Apr 25. PMID:15907487<ref>PMID:15907487</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 2bme" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Huber SK]]
[[Category: Scheidig AJ]]