View source for 1yzm


==Structure of Rabenosyn (458-503), Rab4 binding domain==
<StructureSection load='1yzm' size='340' side='right'caption='[[1yzm]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1yzm]] 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=1YZM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1YZM 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]] 1.5&#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=1yzm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1yzm OCA], [https://pdbe.org/1yzm PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1yzm RCSB], [https://www.ebi.ac.uk/pdbsum/1yzm PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1yzm ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RBNS5_HUMAN RBNS5_HUMAN] Rab4/Rab5 effector protein acting in early endocytic membrane fusion and membrane trafficking of recycling endosomes. Required for endosome fusion either homotypically or with clathrin coated vesicles. Plays a role in the lysosomal trafficking of CTSD/cathepsin D from the Golgi to lysosomes. Also promotes the recycling of transferrin directly from early endosomes to the plasma membrane. Binds phospholipid vesicles containing phosphatidylinositol 3-phosphate (PtdInsP3).<ref>PMID:11062261</ref> <ref>PMID:11788822</ref> <ref>PMID:15020713</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Rab GTPases regulate all stages of membrane trafficking, including vesicle budding, cargo sorting, transport, tethering and fusion. In the inactive (GDP-bound) conformation, accessory factors facilitate the targeting of Rab GTPases to intracellular compartments. After nucleotide exchange to the active (GTP-bound) conformation, Rab GTPases interact with functionally diverse effectors including lipid kinases, motor proteins and tethering complexes. How effectors distinguish between homologous Rab GTPases represents an unresolved problem with respect to the specificity of vesicular trafficking. Using a structural proteomic approach, we have determined the specificity and structural basis underlying the interaction of the multivalent effector rabenosyn-5 with the Rab family. The results demonstrate that even the structurally similar effector domains in rabenosyn-5 can achieve highly selective recognition of distinct subsets of Rab GTPases exclusively through interactions with the switch and interswitch regions. The observed specificity is determined at a family-wide level by structural diversity in the active conformation, which governs the spatial disposition of critical conserved recognition determinants, and by a small number of both positive and negative sequence determinants that allow further discrimination between Rab GTPases with similar switch conformations.

Structural basis of family-wide Rab GTPase recognition by rabenosyn-5.,Eathiraj S, Pan X, Ritacco C, Lambright DG Nature. 2005 Jul 21;436(7049):415-9. PMID:16034420<ref>PMID:16034420</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1yzm" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Eathiraj S]]
[[Category: Lambright DG]]
[[Category: Pan X]]
[[Category: Ritacco C]]