Pressure induced intermediates in the photochemical reaction of squid rhodopsin. |
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| Authors: | M Tsuda I Shirotani S Minomura Y Terayama |
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| Affiliation: | 1. Department of Physics, Sapporo Medical College, Sapporo 060, Japan;1. Institute for Solid State Physics, University of Tokyo, Roppongi, Tokyo 106, Japan |
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| Abstract: | Studies of the pressure effect on the photochemical reaction of squid rhodopsin have been initiated. On irradiation of rhodopsin with blue light at 6 kb, an intermediate having absorption maximum at 502 nm appeared, which we call p-lumirhodopsin. Upon release of pressure, a new intermediate having absorption maximum at 472 nm, which we call p-LM-rhodopsin. Molar free volume change takes place in the transformations of p-lumirhodopsin → p-LM-rhodopsin and p-LM-rhodopsin → Metarhodopsin. |
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