2pm9

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[[Image:2pm9.jpg|left|200px]]<br /><applet load="2pm9" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="2pm9, resolution 3.300&Aring;" />
 
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'''Crystal structure of yeast Sec13/31 vertex element of the COPII vesicular coat'''<br />
 
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==Overview==
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==Crystal structure of yeast Sec13/31 vertex element of the COPII vesicular coat==
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COPII-coated vesicles export newly synthesized proteins from the endoplasmic reticulum. The COPII coat consists of the Sec23/24-Sar1 complex that selects cargo and the Sec13/31 assembly unit that can polymerize into an octahedral cage and deform the membrane into a bud. Crystallographic analysis of the assembly unit reveals a 28 nm long rod comprising a central alpha-solenoid dimer capped by two beta-propeller domains at each end. We construct a molecular model of the COPII cage by fitting Sec13/31 crystal structures into a recently determined electron microscopy density map. The vertex geometry involves four copies of the Sec31 beta-propeller that converge through their axial ends; there is no interdigitation of assembly units of the kind seen in clathrin cages. We also propose that the assembly unit has a central hinge-an arrangement of interlocked alpha-solenoids-about which it can bend to adapt to cages of variable curvature.
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<StructureSection load='2pm9' size='340' side='right'caption='[[2pm9]], [[Resolution|resolution]] 3.30&Aring;' scene=''>
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== Structural highlights ==
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==About this Structure==
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<table><tr><td colspan='2'>[[2pm9]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PM9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2PM9 FirstGlance]. <br>
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2PM9 is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PM9 OCA].
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.3&#8491;</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2pm9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pm9 OCA], [https://pdbe.org/2pm9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2pm9 RCSB], [https://www.ebi.ac.uk/pdbsum/2pm9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2pm9 ProSAT]</span></td></tr>
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==Reference==
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</table>
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Structure and organization of coat proteins in the COPII cage., Fath S, Mancias JD, Bi X, Goldberg J, Cell. 2007 Jun 29;129(7):1325-36. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=17604721 17604721]
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== Function ==
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[[Category: Protein complex]]
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[https://www.uniprot.org/uniprot/SEC31_YEAST SEC31_YEAST] Component of the coat protein complex II (COPII) which promotes the formation of transport vesicles from the endoplasmic reticulum (ER). The coat has two main functions, the physical deformation of the endoplasmic reticulum membrane into vesicles and the selection of cargo molecules.<ref>PMID:8548805</ref> <ref>PMID:8852839</ref> <ref>PMID:9190202</ref> <ref>PMID:9023343</ref> <ref>PMID:10720463</ref> <ref>PMID:14627716</ref>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/pm/2pm9_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=2pm9 ConSurf].
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<div style="clear:both"></div>
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]
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[[Category: Bi, X.]]
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[[Category: Bi X]]
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[[Category: Fath, S.]]
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[[Category: Fath S]]
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[[Category: Goldberg, J.]]
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[[Category: Goldberg J]]
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[[Category: Mancias, J D.]]
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[[Category: Mancias JD]]
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[[Category: beta propeller]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 18:30:57 2008''
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Current revision

Crystal structure of yeast Sec13/31 vertex element of the COPII vesicular coat

PDB ID 2pm9

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