The use of surface plasmon resonance (SPR) and fluorescence resonance energy transfer (FRET) to monitor the interaction of the plant G-proteins Ms-Rac1 and Ms-Rac4 with GTP

Brecht M, Sewald K, Schiene K, Keen G, Fricke M, Sauer M, Niehaus K (2004)
Journal of Biotechnology 112(1-2): 151-164.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
Using an RT-PCR approach a cDNA clone, designated Ms-Rac4 and putatively coding for a small GTPase was isolated from Medicago sativa. Ms-Rac4 and the earlier described Ms-Rac1 [Mol Gen. Genet. 263 (2000) 761] belong to the class of GTP-binding Rho of plants (Rop) proteins. At the amino acid level they display all conserved regions that are common to GTP-binding proteins. Phylogenetically both are located in the group la, but within this group they are well-separated. Computed structure models of both proteins revealed a high degree of structural conservation. Particularly the switch I and switch II region are 100% conserved between Ms-Rac1 and Ms-Rac4 and highly conserved as compared to other Rac-like G-proteins. Both GTPases differ in structure within the fourth loop and the fourth helix. GTP-binding properties of the heterologously expressed Ms-Rac1 and Ms-Rac4 was shown by fluorescence resonance energy transfer (FRET) using mantGTP and by surface plasmon resonance (SPR). By this method the specificity of the G-protein/GTP interaction was shown and the inhibitory effect of GTP, EDTA and Mg2+ on the Ms-Rac1 and Ms-Rac4 binding to immobilized GTP was characterized. Ms-Rac1 and Ms-Rac4 exhibited the same affinity to GTP and are similarly affected by GTP, EDTA and Mg2+. Thus, the predicted structural differences do not result in different GTP-binding properties of Ms-Rac1 and Ms-Rac4. (C) 2004 Elsevier B.V. All rights reserved.
Erscheinungsjahr
Zeitschriftentitel
Journal of Biotechnology
Band
112
Zeitschriftennummer
1-2
Seite
151-164
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PUB-ID

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Brecht M, Sewald K, Schiene K, et al. The use of surface plasmon resonance (SPR) and fluorescence resonance energy transfer (FRET) to monitor the interaction of the plant G-proteins Ms-Rac1 and Ms-Rac4 with GTP. Journal of Biotechnology. 2004;112(1-2):151-164.
Brecht, M., Sewald, K., Schiene, K., Keen, G., Fricke, M., Sauer, M., & Niehaus, K. (2004). The use of surface plasmon resonance (SPR) and fluorescence resonance energy transfer (FRET) to monitor the interaction of the plant G-proteins Ms-Rac1 and Ms-Rac4 with GTP. Journal of Biotechnology, 112(1-2), 151-164. doi:10.1016/j.jbiotec.2004.04.030
Brecht, M., Sewald, K., Schiene, K., Keen, G., Fricke, M., Sauer, M., and Niehaus, K. (2004). The use of surface plasmon resonance (SPR) and fluorescence resonance energy transfer (FRET) to monitor the interaction of the plant G-proteins Ms-Rac1 and Ms-Rac4 with GTP. Journal of Biotechnology 112, 151-164.
Brecht, M., et al., 2004. The use of surface plasmon resonance (SPR) and fluorescence resonance energy transfer (FRET) to monitor the interaction of the plant G-proteins Ms-Rac1 and Ms-Rac4 with GTP. Journal of Biotechnology, 112(1-2), p 151-164.
M. Brecht, et al., “The use of surface plasmon resonance (SPR) and fluorescence resonance energy transfer (FRET) to monitor the interaction of the plant G-proteins Ms-Rac1 and Ms-Rac4 with GTP”, Journal of Biotechnology, vol. 112, 2004, pp. 151-164.
Brecht, M., Sewald, K., Schiene, K., Keen, G., Fricke, M., Sauer, M., Niehaus, K.: The use of surface plasmon resonance (SPR) and fluorescence resonance energy transfer (FRET) to monitor the interaction of the plant G-proteins Ms-Rac1 and Ms-Rac4 with GTP. Journal of Biotechnology. 112, 151-164 (2004).
Brecht, M., Sewald, K., Schiene, K., Keen, G., Fricke, M., Sauer, Markus, and Niehaus, Karsten. “The use of surface plasmon resonance (SPR) and fluorescence resonance energy transfer (FRET) to monitor the interaction of the plant G-proteins Ms-Rac1 and Ms-Rac4 with GTP”. Journal of Biotechnology 112.1-2 (2004): 151-164.

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Rich RL, Myszka DG., J Mol Recognit 18(6), 2005
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