2jph

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NMR solution structure of the Rho GTPase binding domain of human plexin-b1

Structural highlights

2jph is a 1 chain structure with sequence from Homo sapiens. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:Solution NMR
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

The plexin family of transmembrane receptors are important for axon guidance, angiogenesis, but also in cancer. Recently, plexin-B1 somatic missense mutations were found in both primary tumors and metastases of breast and prostate cancers, with several mutations mapping to the Rho GTPase binding domain (RBD) in the cytoplasmic region of the receptor. Here we present the NMR solution structure of this domain, confirming that the protein has both a ubiquitin-like fold and surface features. Oncogenic mutations T1795A and T1802A are located in a loop region, perturb the average structure locally, and have no effect on Rho GTPase binding affinity. Mutations L1815F and L1815P are located at the Rho GTPase binding site and are associated with a complete loss of binding for Rac1 and Rnd1. Both are found to disturb the conformation of the beta3-beta4 sheet and the orientation of surrounding side chains. Our study suggests that the oncogenic behavior of the mutants can be rationalized with reference to the structure of the RBD of plexin-B1.

Insights into oncogenic mutations of plexin-B1 based on the solution structure of the Rho GTPase binding domain.,Tong Y, Hota PK, Hamaneh MB, Buck M Structure. 2008 Feb;16(2):246-58. PMID:18275816[7]

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

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Citations
8 reviews cite this structure
Plexin structures are coming: opportunities for multilevel investigations of semaphorin guidance receptors, their cell signaling mechanisms, and functions.
Hota et al. (2012)
7 more
16 other articles
No citations found

See Also

References

  1. ↑ 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
  2. ↑ 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
  3. ↑ 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
  4. ↑ 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
  5. ↑ 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
  6. ↑ 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
  7. ↑ Tong Y, Hota PK, Hamaneh MB, Buck M. Insights into oncogenic mutations of plexin-B1 based on the solution structure of the Rho GTPase binding domain. Structure. 2008 Feb;16(2):246-58. PMID:18275816 doi:10.1016/j.str.2007.12.012

Contents


PDB ID 2jph

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