| 释义 |
preˌlumirhoˈdopsin Biochem.
[pre- A. 2.]
An isomer of rhodopsin, stable only at very low temperatures, which is formed by the action of light on rhodopsin and changes spontaneously to lumirhodopsin.
1963Yoshizawa & Wald in Nature 30 Mar. 1280/1 The intermediate was shown to be stable to about -140°, above which it forms lumirhodopsin. We shall call it pre⁓lumirhodopsin. 1968A. White et al. Princ. Biochem. (ed. 4) xl. 904 After pre-lumirhodopsin is formed by the isomerization of one double bond, all subsequent steps proceed spontaneously. 1976Nature 5 Feb. 424/2 The results of a picosecond study indicated that the formation of prelumirhodopsin when rhodopsin is irradiated probably involves a restricted change in the geometry of retinal rather than a complete isomerisation. Ibid. 22 Apr. 726/2 In the photolysis of the visual pigment rhodopsin the intermediate first observed is bathorhodopsin (formerly called prelumirhodopsin). |