2-dimensional protein crystals for bioelectronics

H. Sasabe, T. Furuno, A. Sato, K. M. Ulmer

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

A two-dimensional protein crystal that preserves biological function is necessary for the realization of bioelectronic devices. The authors have fabricated a close-packed purple membrane (PM) monolayer by the Langmuir-Blodgett technique and studied the proton transfer through the membrane under the photoexcitation. The PM monolayer is transferred to an indium-tin-oxide or Al-deposited glass substrate and/or a Si wafer by a horizontal transfer technique. The morphology of monolayer film was directly investigated by SEM. From the static and dynamic measurement of photovoltaic effect in the PM multilayer, it was confirmed that the photochemical cycle of the bacteriorhodopsin (membrane protein of PM) was preserved. The two-dimensional packing of globular protein ferritin was also investigated. Depending on the surface pressure applied, the packing changes in a chainlike aggregate or in a fairly good lattice (small patch).

Original languageEnglish
Number of pages1
Publication statusPublished - 1988 Nov 1
EventProceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society - New Orleans, LA, USA
Duration: 1988 Nov 41988 Nov 7

Other

OtherProceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CityNew Orleans, LA, USA
Period88/11/488/11/7

ASJC Scopus subject areas

  • Engineering(all)

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