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Applied Spectroscopy

Applied Spectroscopy

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  • Vol. 51, Iss. 4 — Apr. 1, 1997
  • pp: 558–562

Molecular Reaction Mechanisms of Proteins Monitored by Nanosecond Step-Scan FT-IR Difference Spectroscopy

Robin Rammelsberg, Benedikt Hessling, Harald Chorongiewski, and Klaus Gerwert

Applied Spectroscopy, Vol. 51, Issue 4, pp. 558-562 (1997)


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Abstract

Step-scan FT-IR difference spectroscopy with 100-ns time resolution is applied to the membrane protein bacteriorhodopsin. The experimetal setup and data acquisition are described in great detail. The IR absorbance changes accompanying bacteriorhodopsin's photocycle are presented in a three-dimensional representation. The data quality allows one, for example, to resolve the biphasic rise of the photocycle-intermediate M. A bacteriorhodopsin's proton pump model based on the FT-IR works is presented.

Citation
Robin Rammelsberg, Benedikt Hessling, Harald Chorongiewski, and Klaus Gerwert, "Molecular Reaction Mechanisms of Proteins Monitored by Nanosecond Step-Scan FT-IR Difference Spectroscopy," Appl. Spectrosc. 51, 558-562 (1997)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-51-4-558


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