Formation and Decay of Prelumirhodopsin at Room Temperatures | Zendy

G. E. Busch | Zendy; M L Applebury | Zendy; Angelo A. Lamola | Zendy; P. M. Rentzepis | Zendy

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Formation and Decay of Prelumirhodopsin at Room Temperatures

Author(s) -

G. E. Busch,

M L Applebury,

Angelo A. Lamola,

P. M. Rentzepis

Publication year - 1972

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.69.10.2802

Subject(s) - excited state , rhodopsin , transient (computer programming) , ground state , laser , resolution (logic) , chemistry , atomic physics , optics , analytical chemistry (journal) , materials science , photochemistry , physics , chromatography , retinal , biochemistry , artificial intelligence , computer science , operating system

We have excited detergent-solubilized bovine rhodopsin at room temperature with 530-nm light pulses from a mode locked laser, and have observed the appearance and decay of a transient species that absorbs more strongly at 560 nm than does ground-state rhodopsin. Our data show that the absorbing intermediate appears in a time that is at least as short as the experimental resolution (about 6 psec) and decays with a life time of about 30 nsec. The extremely fast risetime supports the hypothesis that prelumirhodopsin is the product of the primary photoprocess.

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