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Literature DB >> 17400701

Detection of protein orientation on the silica microsphere surface using transverse electric/transverse magnetic whispering gallery modes.

Mayumi Noto¹, David Keng, Iwao Teraoka, Stephen Arnold.

Abstract

The state of adsorbed protein molecules can be examined by comparing the shifts in a narrow line resonance wavelength of transverse electric (TE) and transverse magnetic (TM) whispering gallery modes (WGM) when the molecules adsorb onto a transparent microsphere that houses WGM. In adsorption of bovine serum albumin (BSA) onto an aminopropyl-modified silica microsphere, the TM/TE shift ratio indicated highly anisotropic polarizability of BSA in the direction normal to the surface, most likely ascribed to anchoring the heart-shaped protein molecule by one of its tips. The polarization-dependent resonance shift was confirmed when the surrounding refractive index was uniformly changed by adding salt, which would simulate adsorption of large objects.

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Year: 2007 PMID： 17400701 PMCID： PMC1877779 DOI： 10.1529/biophysj.106.103200

Source DB: PubMed Journal: Biophys J ISSN： 0006-3495 Impact factor: 4.033

22 in total

1. The conformation of serum albumin in solution: a combined phosphorescence depolarization-hydrodynamic modeling study.

Authors: M L Ferrer; R Duchowicz; B Carrasco; J G de la Torre; A U Acuña
Journal: Biophys J Date: 2001-05 Impact factor: 4.033

2. Conformational changes and orientation of Humicola lanuginosa lipase on a solid hydrophobic surface: an in situ interface Fourier transform infrared-attenuated total reflection study.

Authors: Sylvie Noinville; Madeleine Revault; Marie-Hélène Baron; Ali Tiss; Stéphane Yapoudjian; Margarita Ivanova; Robert Verger
Journal: Biophys J Date: 2002-05 Impact factor: 4.033

3. Mean nearest-neighbor distance in random packings of hard D-dimensional spheres.

Authors:
Journal: Phys Rev Lett Date: 1995-03-20 Impact factor: 9.161

4. Nanolayer characterization through wavelength multiplexing of a microsphere resonator.

Authors: Mayumi Noto; Frank Vollmer; David Keng; Iwao Teraoka; Stephen Arnold
Journal: Opt Lett Date: 2005-03-01 Impact factor: 3.776

5. Structure, stability, and orientation of BSA adsorbed to silica.

Authors: Helén Larsericsdotter; Sven Oscarsson; Jos Buijs
Journal: J Colloid Interface Sci Date: 2005-09-01 Impact factor: 8.128

6. Excitation of resonances of microspheres on an optical fiber.

Authors: A Serpengüzel; S Arnold; G Griffel
Journal: Opt Lett Date: 1995-04-01 Impact factor: 3.776

7. ATR-FTIR Study of IgG Adsorbed on Different Silica Surfaces.

Authors:
Journal: J Colloid Interface Sci Date: 1999-12-01 Impact factor: 8.128

8. The Adsorption-Desorption Cycle. Reversibility of the BSA-Silica System.

Authors:
Journal: J Colloid Interface Sci Date: 2001-01-15 Impact factor: 8.128

9. The density and refractive index of adsorbing protein layers.

Authors: Janos Vörös
Journal: Biophys J Date: 2004-07 Impact factor: 4.033

10. Dual-polarization interferometry: an analytical technique to measure changes in protein structure in real time, to determine the stoichiometry of binding events, and to differentiate between specific and nonspecific interactions.

Authors: Marcus J Swann; Louise L Peel; Simon Carrington; Neville J Freeman
Journal: Anal Biochem Date: 2004-06-15 Impact factor: 3.365

8 in total

Detection of protein orientation on the silica microsphere surface using transverse electric/transverse magnetic whispering gallery modes.

1. The conformation of serum albumin in solution: a combined phosphorescence depolarization-hydrodynamic modeling study.

2. Conformational changes and orientation of Humicola lanuginosa lipase on a solid hydrophobic surface: an in situ interface Fourier transform infrared-attenuated total reflection study.

3. Mean nearest-neighbor distance in random packings of hard D-dimensional spheres.

4. Nanolayer characterization through wavelength multiplexing of a microsphere resonator.

5. Structure, stability, and orientation of BSA adsorbed to silica.

6. Excitation of resonances of microspheres on an optical fiber.

7. ATR-FTIR Study of IgG Adsorbed on Different Silica Surfaces.

8. The Adsorption-Desorption Cycle. Reversibility of the BSA-Silica System.

9. The density and refractive index of adsorbing protein layers.

10. Dual-polarization interferometry: an analytical technique to measure changes in protein structure in real time, to determine the stoichiometry of binding events, and to differentiate between specific and nonspecific interactions.

1. Label-free detection with high-Q microcavities: a review of biosensing mechanisms for integrated devices.

2. Whispering gallery mode sensors.

3. Optical microspherical resonators for biomedical sensing.

Review 4. High-Q optical sensors for chemical and biological analysis.

5. Applications of Optical Microcavity Resonators in Analytical Chemistry.

Review 6. Optical microcavity: sensing down to single molecules and atoms.

7. A scanning cavity microscope.

8. Probing Stress-Induced Optical Birefringence of Glassy Polymers by Whispering Gallery Modes Light Localization.