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Identification of Intrinsically Disordered Proteins by a Special 2D Electrophoresis

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Intrinsically Disordered Protein Analysis

Part of the book series: Methods in Molecular Biology ((MIMB,volume 896))

Abstract

Intrinsically disordered proteins (IDPs) lack a well-defined three-dimensional structure under physiological conditions. They constitute a significant fraction of various proteomes and have significant roles in key cellular processes. Here we report the development of a two-dimensional electrophoresis technique for their de novo recognition and characterization. This technique consists of the combination of native and 8 M urea electrophoresis of heat-treated proteins where IDPs are expected to run into the diagonal of the gel, whereas globular proteins either precipitate upon heat treatment or unfold and run off the diagonal in the second dimension.

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References

  1. Uversky VN (2002) Natively unfolded proteins: a point where biology waits for physics. Protein Sci 11:739–756

    Article  PubMed  CAS  Google Scholar 

  2. Wright PE, Dyson HJ (1999) Intrinsically unstructured proteins: re-assessing the protein structure-function paradigm. J Mol Biol 293:321–331

    Article  PubMed  CAS  Google Scholar 

  3. Dunker AK, Brown CJ, Lawson JD, Iakoucheva LM, Obradovic Z (2002) Intrinsic disorder and protein function. Biochemistry 41:6573–6582

    Article  PubMed  CAS  Google Scholar 

  4. Tompa P (2002) Intrinsically unstructured proteins. Trends Biochem Sci 27:527–533

    Article  PubMed  CAS  Google Scholar 

  5. Dunker AK, Obradovic Z, Romero P, Garner EC, Brown CJ (2000) Intrinsic protein disorder in complete genomes. Genome Inform Ser Workshop Genome Inform 11:161–171

    PubMed  CAS  Google Scholar 

  6. Kim TD, Ryu HJ, Cho HI, Yang CH, Kim J (2000) Thermal behavior of proteins: heat-resistant proteins and their heat-induced secondary structural changes. Biochemistry 39:14839–14846

    Article  PubMed  CAS  Google Scholar 

  7. Tompa P, Csermely P (2004) The role of structural disorder in the function of RNA and protein chaperones. FASEB J 18:1169–1175

    Article  PubMed  CAS  Google Scholar 

  8. Hackel M, Konno T, Hinz H (2000) A new alternative method to quantify residual structure in 'unfolded' proteins. Biochim Biophys Acta 1479:155–165

    Article  PubMed  CAS  Google Scholar 

  9. Weinreb PH, Zhen W, Poon AW, Conway KA, Lansbury PT Jr (1996) NACP, a protein implicated in Alzheimer’s disease and learning, is natively unfolded. Biochemistry 35:13709–13715

    Article  PubMed  CAS  Google Scholar 

  10. Belmont LD, Mitchison TJ (1996) Identification of a protein that interacts with tubulin dimers and increases the catastrophe rate of microtubules. Cell 84:623–631

    Article  PubMed  CAS  Google Scholar 

  11. Kriwacki RW, Hengst L, Tennant L, Reed SI, Wright PE (1996) Structural studies of p21Waf1/Cip1/Sdi1 in the free and Cdk2-bound state: conformational disorder mediates binding diversity. Proc Natl Acad Sci U S A 93:11504–11509

    Article  PubMed  CAS  Google Scholar 

  12. Szollosi E, Bokor M, Bodor A, Perczel A, Klement E, Medzihradszky KF, Tompa K, Tompa P (2008) Intrinsic structural disorder of DF31, a Drosophila protein of chromatin decondensation and remodeling activities. J Proteome Res 7:2291–2299

    Article  PubMed  Google Scholar 

  13. Csizmok V, Szollosi E, Friedrich P, Tompa P (2006) A novel two-dimensional electrophoresis technique for the identification of intrinsically unstructured proteins. Mol Cell Proteomics 5:265–273

    PubMed  CAS  Google Scholar 

  14. Uversky VN, Gillespie JR, Fink AL (2000) Why are “natively unfolded” proteins unstructured under physiologic conditions? Proteins 41:415–427

    Article  PubMed  CAS  Google Scholar 

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Tantos, A., Tompa, P. (2012). Identification of Intrinsically Disordered Proteins by a Special 2D Electrophoresis. In: Uversky, V., Dunker, A. (eds) Intrinsically Disordered Protein Analysis. Methods in Molecular Biology, vol 896. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-3704-8_13

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  • DOI: https://doi.org/10.1007/978-1-4614-3704-8_13

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  • Publisher Name: Springer, New York, NY

  • Print ISBN: 978-1-4614-3703-1

  • Online ISBN: 978-1-4614-3704-8

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