2ot3: Difference between revisions

Latest revision as of 10:48, 30 August 2023

Crystal structure of rabex-5 VPS9 domain in complex with nucleotide free RAB21

Structural highlights

2ot3 is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.1Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

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).^[1] ^[2] ^[3]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

RABEX-5 and other exchange factors with VPS9 domains regulate endocytic trafficking through activation of the Rab family GTPases RAB5, RAB21 and RAB22. Here we report the crystal structure of the RABEX-5 catalytic core in complex with nucleotide-free RAB21, a key intermediate in the exchange reaction pathway. The structure reveals how VPS9 domain exchange factors recognize Rab GTPase substrates, accelerate GDP release and stabilize the nucleotide-free conformation. We further identify an autoinhibitory element in a predicted amphipathic helix located near the C terminus of the VPS9 domain. The autoinhibitory element overlaps with the binding site for the multivalent effector RABAPTIN-5 and potently suppresses the exchange activity of RABEX-5. Autoinhibition can be partially reversed by mutation of conserved residues on the nonpolar face of the predicted amphipathic helix or by assembly of the complex with RABAPTIN-5.

Structural basis for Rab GTPase activation by VPS9 domain exchange factors.,Delprato A, Lambright DG Nat Struct Mol Biol. 2007 May;14(5):406-12. Epub 2007 Apr 22. PMID:17450153^[4]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Horiuchi H, Lippe R, McBride HM, Rubino M, Woodman P, Stenmark H, Rybin V, Wilm M, Ashman K, Mann M, Zerial M. A novel Rab5 GDP/GTP exchange factor complexed to Rabaptin-5 links nucleotide exchange to effector recruitment and function. Cell. 1997 Sep 19;90(6):1149-59. PMID:9323142
↑ Lippe R, Miaczynska M, Rybin V, Runge A, Zerial M. Functional synergy between Rab5 effector Rabaptin-5 and exchange factor Rabex-5 when physically associated in a complex. Mol Biol Cell. 2001 Jul;12(7):2219-28. PMID:11452015
↑ Delprato A, Merithew E, Lambright DG. Structure, exchange determinants, and family-wide rab specificity of the tandem helical bundle and Vps9 domains of Rabex-5. Cell. 2004 Sep 3;118(5):607-17. PMID:15339665 doi:10.1016/j.cell.2004.08.009
↑ Delprato A, Lambright DG. Structural basis for Rab GTPase activation by VPS9 domain exchange factors. Nat Struct Mol Biol. 2007 May;14(5):406-12. Epub 2007 Apr 22. PMID:17450153 doi:10.1038/nsmb1232

Proteopedia Page Contributors and Editors (what is this?)

OCA

[1] Horiuchi H, Lippe R, McBride HM, Rubino M, Woodman P, Stenmark H, Rybin V, Wilm M, Ashman K, Mann M, Zerial M. A novel Rab5 GDP/GTP exchange factor complexed to Rabaptin-5 links nucleotide exchange to effector recruitment and function. Cell. 1997 Sep 19;90(6):1149-59. PMID:9323142

[2] Lippe R, Miaczynska M, Rybin V, Runge A, Zerial M. Functional synergy between Rab5 effector Rabaptin-5 and exchange factor Rabex-5 when physically associated in a complex. Mol Biol Cell. 2001 Jul;12(7):2219-28. PMID:11452015

[3] Delprato A, Merithew E, Lambright DG. Structure, exchange determinants, and family-wide rab specificity of the tandem helical bundle and Vps9 domains of Rabex-5. Cell. 2004 Sep 3;118(5):607-17. PMID:15339665 doi:10.1016/j.cell.2004.08.009

[4] Delprato A, Lambright DG. Structural basis for Rab GTPase activation by VPS9 domain exchange factors. Nat Struct Mol Biol. 2007 May;14(5):406-12. Epub 2007 Apr 22. PMID:17450153 doi:10.1038/nsmb1232

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[2]

[3]

[4]

@@ Line 1: / Line 1: @@
-[[Image:2ot3.gif|left|200px]]<br />
-<applet load="2ot3" size="450" color="white" frame="true" align="right" spinBox="true"
-caption="2ot3, resolution 2.10&Aring;" />
-'''Crystal structure of rabex-5 VPS9 domain in complex with nucleotide free RAB21'''<br />
-==Overview==
+==Crystal structure of rabex-5 VPS9 domain in complex with nucleotide free RAB21==
-RABEX-5 and other exchange factors with VPS9 domains regulate endocytic, trafficking through activation of the Rab family GTPases RAB5, RAB21 and, RAB22. Here we report the crystal structure of the RABEX-5 catalytic core, in complex with nucleotide-free RAB21, a key intermediate in the exchange, reaction pathway. The structure reveals how VPS9 domain exchange factors, recognize Rab GTPase substrates, accelerate GDP release and stabilize the, nucleotide-free conformation. We further identify an autoinhibitory, element in a predicted amphipathic helix located near the C terminus of, the VPS9 domain. The autoinhibitory element overlaps with the binding site, for the multivalent effector RABAPTIN-5 and potently suppresses the, exchange activity of RABEX-5. Autoinhibition can be partially reversed by, mutation of conserved residues on the nonpolar face of the predicted, amphipathic helix or by assembly of the complex with RABAPTIN-5.
+<StructureSection load='2ot3' size='340' side='right'caption='[[2ot3]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[2ot3]] is a 2 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=2OT3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2OT3 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]] 2.1&#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=2ot3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ot3 OCA], [https://pdbe.org/2ot3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ot3 RCSB], [https://www.ebi.ac.uk/pdbsum/2ot3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ot3 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/ot/2ot3_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=2ot3 ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+RABEX-5 and other exchange factors with VPS9 domains regulate endocytic trafficking through activation of the Rab family GTPases RAB5, RAB21 and RAB22. Here we report the crystal structure of the RABEX-5 catalytic core in complex with nucleotide-free RAB21, a key intermediate in the exchange reaction pathway. The structure reveals how VPS9 domain exchange factors recognize Rab GTPase substrates, accelerate GDP release and stabilize the nucleotide-free conformation. We further identify an autoinhibitory element in a predicted amphipathic helix located near the C terminus of the VPS9 domain. The autoinhibitory element overlaps with the binding site for the multivalent effector RABAPTIN-5 and potently suppresses the exchange activity of RABEX-5. Autoinhibition can be partially reversed by mutation of conserved residues on the nonpolar face of the predicted amphipathic helix or by assembly of the complex with RABAPTIN-5.
-==About this Structure==
+Structural basis for Rab GTPase activation by VPS9 domain exchange factors.,Delprato A, Lambright DG Nat Struct Mol Biol. 2007 May;14(5):406-12. Epub 2007 Apr 22. PMID:17450153<ref>PMID:17450153</ref>
-OT3 is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2OT3 OCA].
-==Reference==
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-Structural basis for Rab GTPase activation by VPS9 domain exchange factors., Delprato A, Lambright DG, Nat Struct Mol Biol. 2007 May;14(5):406-12. Epub 2007 Apr 22. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=17450153 17450153]
+</div>
+<div class="pdbe-citations 2ot3" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Rab5 GDP/GTP exchange factor|Rab5 GDP/GTP exchange factor]]
+== References ==
+<references/>
+__TOC__
+</StructureSection>
 [[Category: Homo sapiens]]
-[[Category: Protein complex]]
+[[Category: Large Structures]]
-[[Category: Delprato, A.]]
+[[Category: Delprato A]]
-[[Category: Lambright, D.]]
+[[Category: Lambright D]]
-[[Category: protein transport]]
-[[Category: rab21]]
-[[Category: rabex-5]]
-[[Category: vesicular traffic]]
-[[Category: vps9 domain]]
-''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Mon Nov 12 23:15:51 2007''

2ot3: Difference between revisions

Latest revision as of 10:48, 30 August 2023

Crystal structure of rabex-5 VPS9 domain in complex with nucleotide free RAB21

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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