2r2o

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(Difference between revisions)

Revision as of 07:41, 25 October 2017

Crystal structure of the effector domain of human Plexin B1

Structural highlights

2r2o is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
NonStd Res:
Gene:	PLXNB1, KIAA0407, PLXN5, SEP (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[PLXB1_HUMAN] Receptor for SEMA4D. Plays a role in RHOA activation and subsequent changes of the actin cytoskeleton. Plays a role in axon guidance, invasive growth and cell migration.^[1] ^[2] ^[3] ^[4] ^[5] ^[6]

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

Plexins are the first known transmembrane receptors that interact directly with small GTPases. On binding to certain Rho family GTPases, the receptor regulates the remodeling of the actin cytoskeleton and alters cell movement in response to semaphorin guidance cues. In a joint solution NMR spectroscopy and x-ray crystallographic study, we characterize a 120-residue cytoplasmic independent folding domain of plexin-B1 that directly binds three Rho family GTPases, Rac1, Rnd1, and RhoD. The NMR data show that, surprisingly, the Cdc42/Rac interactive binding-like motif of plexin-B1 is not involved in this interaction. Instead, all three GTPases interact with the same region, beta-strands 3 and 4 and a short alpha-helical segment of the plexin domain. The 2.0 A resolution x-ray structure shows that these segments are brought together by the tertiary structure of the ubiquitin-like fold. In the crystal, the protein is dimerized with C2 symmetry through a four-stranded antiparallel beta-sheet that is formed outside the fold by a long loop between the monomers. This region is adjacent to the GTPase binding motifs identified by NMR. Destabilization of the dimer in solution by binding of any one of the three GTPases suggests a model for receptor regulation that involves bidirectional signaling. The model implies a multifunctional role for the GTPase-plexin interaction that includes conformational change and a localization of active receptors in the signaling mechanism.

Binding of Rac1, Rnd1, and RhoD to a novel Rho GTPase interaction motif destabilizes dimerization of the plexin-B1 effector domain.,Tong Y, Chugha P, Hota PK, Alviani RS, Li M, Tempel W, Shen L, Park HW, Buck M J Biol Chem. 2007 Dec 21;282(51):37215-24. Epub 2007 Oct 4. PMID:17916560^[7]

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

References

↑ Giordano S, Corso S, Conrotto P, Artigiani S, Gilestro G, Barberis D, Tamagnone L, Comoglio PM. The semaphorin 4D receptor controls invasive growth by coupling with Met. Nat Cell Biol. 2002 Sep;4(9):720-4. PMID:12198496 doi:10.1038/ncb843
↑ Aurandt J, Vikis HG, Gutkind JS, Ahn N, Guan KL. The semaphorin receptor plexin-B1 signals through a direct interaction with the Rho-specific nucleotide exchange factor, LARG. Proc Natl Acad Sci U S A. 2002 Sep 17;99(19):12085-90. Epub 2002 Aug 26. PMID:12196628 doi:10.1073/pnas.142433199
↑ Swiercz JM, Kuner R, Offermanns S. Plexin-B1/RhoGEF-mediated RhoA activation involves the receptor tyrosine kinase ErbB-2. J Cell Biol. 2004 Jun 21;165(6):869-80. PMID:15210733 doi:10.1083/jcb.200312094
↑ Tong Y, Hota PK, Penachioni JY, Hamaneh MB, Kim S, Alviani RS, Shen L, He H, Tempel W, Tamagnone L, Park HW, Buck M. Structure and function of the intracellular region of the plexin-b1 transmembrane receptor. J Biol Chem. 2009 Dec 18;284(51):35962-72. Epub . PMID:19843518 doi:10.1074/jbc.M109.056275
↑ Janssen BJ, Robinson RA, Perez-Branguli F, Bell CH, Mitchell KJ, Siebold C, Jones EY. Structural basis of semaphorin-plexin signalling. Nature. 2010 Sep 26. PMID:20877282 doi:10.1038/nature09468
↑ Bell CH, Aricescu AR, Jones EY, Siebold C. A Dual Binding Mode for RhoGTPases in Plexin Signalling. PLoS Biol. 2011 Aug;9(8):e1001134. Epub 2011 Aug 30. PMID:21912513 doi:10.1371/journal.pbio.1001134
↑ Tong Y, Chugha P, Hota PK, Alviani RS, Li M, Tempel W, Shen L, Park HW, Buck M. Binding of Rac1, Rnd1, and RhoD to a novel Rho GTPase interaction motif destabilizes dimerization of the plexin-B1 effector domain. J Biol Chem. 2007 Dec 21;282(51):37215-24. Epub 2007 Oct 4. PMID:17916560 doi:10.1074/jbc.M703800200

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2r2o"

@@ Line 1: / Line 1: @@
 ==Crystal structure of the effector domain of human Plexin B1==
 <StructureSection load='2r2o' size='340' side='right' caption='[[2r2o]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PLXNB1, KIAA0407, PLXN5, SEP ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2r2o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2r2o OCA], [http://pdbe.org/2r2o PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2r2o RCSB], [http://www.ebi.ac.uk/pdbsum/2r2o PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2r2o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2r2o OCA], [http://pdbe.org/2r2o PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2r2o RCSB], [http://www.ebi.ac.uk/pdbsum/2r2o PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2r2o ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 29: / Line 30: @@
 </div>
 <div class="pdbe-citations 2r2o" style="background-color:#fffaf0;"></div>
-==See Also==
-*[[Plexin|Plexin]]
 == References ==
 <references/>

2r2o

From Proteopedia

Revision as of 07:41, 25 October 2017

Crystal structure of the effector domain of human Plexin B1

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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