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Biology

Сравнение сродства GTPase-связывающих белков, используя конкурентных анализах

Published: October 8, 2015 doi: 10.3791/53254

Materials

Name Company Catalog Number Comments
Bugbuster Novagen 70584-3
COMPLETE protease inhibitor Roche 05 056 489 001
Glutathione magnetic beads Pierce 88821
Polyethylenimine, branched, average Mw ~25,000 Sigma Aldrich 408727-100ML
OPIMEM Life Technologies 31985-047
Dulbecco's Modified Eagle Media Sigma Aldrich D5796
Fetal Bovine Serum Life Technologies 10270-1-6
L-Glutamine Life Technologies 25030-024
GFP-Trap_A Chromotec gta-20
GDP Sigma Aldrich G7127 Highly unstable. Aliquot and store at -80 immediately upon reconstritution
GTPγS Sigma Aldrich G8634 Highly unstable. Aliquot and store at -80 immediately upon reconstritution
Blocking Buffer Sigma Aldrich B6429
Tween-20 Sigma Aldrich P9416
Anti-GFP antibody Living Colors 632592 Use at 1/1000 dilution
DyLight 800 conjugated goat anti-rabbit secondary antibody Fisher Scientific 10733944
Anti-PAK1 antibody Cell Signaling 2602S Use at 1/1000 dilution
Odyssey SA Infrared Imaging System Li-cor 9260-11PC

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References

  1. Burridge, K., Rho Wennerberg, K. and Rac take center stage. Cell. 116 (2), 167-179 (2004).
  2. Raftopoulou, M., Hall, A. Cell migration: Rho GTPases lead the way. Dev Biol. 265 (1), 23-32 (2004).
  3. Rossman, K. L., Der, C. J., Sondek, J. GEF means go: turning on RHO GTPases with guanine nucleotide-exchange factors. Nat Rev Mol Cell Biol. 6 (2), 167-180 (2005).
  4. Worthylake, D. K., Rossman, K. L., Crystal Sondek, J. structure of Rac1 in complex with the guanine nucleotide exchange region of Tiam1. Nature. 408 (6813), 682-688 (2000).
  5. Scheffzek, K., Ahmadian, M. R. GTPase activating proteins: structural and functional insights 18 years after discovery. Cell Mol Life Sci. 62 (24), 3014-3038 (2005).
  6. Del Pozo,, A, M., et al. Integrins regulate GTP-Rac localized effector interactions through dissociation of Rho-GDI. Nat Cell Biol. 4 (3), 232-239 (2002).
  7. Williamson, R. C., et al. Coronin-1C and RCC2 guide mesenchymal migration by trafficking Rac1 and controlling GEF exposure. J Cell Sci. 127 (Pt 19), 4292-4307 (2014).
  8. Del Pozo, M. A., Price, L. S., Alderson, N. B., Ren, X. D., Schwartz, M. A. Adhesion to the extracellular matrix regulates the coupling of the small GTPase Rac to its effector PAK. Embo J. 19 (9), 2008-2014 (2000).
  9. Van Rijssel, J., Hoogenboezem, M., Wester, L., Hordijk, P. L., Van Buul, J. D. The N-terminal DH-PH domain of Trio induces cell spreading and migration by regulating lamellipodia dynamics in a Rac1-dependent fashion. PLoS. 7 (1), e29912 (2012).
  10. Self, A. J., Hall, A. Measurement of intrinsic nucleotide exchange and GTP hydrolysis rates. Methods Enzymol. 256, 67-76 (1995).
Сравнение сродства GTPase-связывающих белков, используя конкурентных анализах
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Cite this Article

Williamson, R. C., Bass, M. D.More

Williamson, R. C., Bass, M. D. Comparing the Affinity of GTPase-binding Proteins using Competition Assays. J. Vis. Exp. (104), e53254, doi:10.3791/53254 (2015).

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