Time for conversion of rhodopsin to photorhodopsin

Value 200 fsec
Organism Cow Bos Taurus
Reference Saari JC. Biochemistry of visual pigment regeneration: the Friedenwald lecture. Invest Ophthalmol Vis Sci. 2000 Feb41(2):337-48. p.337 left column bottom paragraphPubMed ID10670460
Primary Source Schoenlein RW, Peteanu LA, Mathies RA, Shank CV. The first step in vision: femtosecond isomerization of rhodopsin. Science. 1991 254: 412–415.PubMed ID1925597
Comments "It has been reported that regeneration of visual pigments is a slow process and that photoisomerization of 11-cis-retinal in rhodopsin is very rapid. In fact, complete dark adaptation in humans requires approximately 40 minutes, [BNID 111394] and conversion of rhodopsin to photorhodopsin requires only 200 fsec.[primary source]" Bovine retina was studied according to primary source p.413 middle column bottom paragraph: "The rhodopsin sample is prepared by isolating rod outer segments from bovine retinas (10)."
Entered by Uri M
ID 111395