Anisotropic molecular motion on cell surfaces. | Zendy

Barton A. Smith | Zendy; William R. Clark | Zendy; Harden M. McConnell | Zendy

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Anisotropic molecular motion on cell surfaces.

Author(s) -

Barton A. Smith,

William R. Clark,

Harden M. McConnell

Publication year - 1979

Publication title -

proceedings of the national academy of sciences

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.011

H-Index - 771

eISSN - 1091-6490

pISSN - 0027-8424

DOI - 10.1073/pnas.76.11.5641

Subject(s) - photobleaching , anisotropy , anisotropic diffusion , perpendicular , diffusion , fluorescence recovery after photobleaching , materials science , fourier analysis , biophysics , fourier transform , motion (physics) , optics , physics , chemistry , molecular physics , classical mechanics , geometry , biology , fluorescence , mathematics , quantum mechanics , thermodynamics

Photobleaching in a two-dimensional periodic pattern has been used to characterize the motion of succinylconcanavalin A receptors on the surfaces of mouse fibroblasts. These receptors were found to exhibit anisotropic two-dimensional diffusion in adherent cells having parallel stress fibers. Diffusion coefficients of the order of 10(-11) cm2/sec and 10(-12) cm2/sec were measured for diffusive motions parallel and perpendicular to these fibers. The determination of the anisotropic motion used a two-dimensional Fourier analysis. A study was made of the effect of changes in cell shape on the photobleach pattern.

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