Aharon Katzir Memorial Volume by D. Chapman (auth.), Henryk Eisenberg, Ephraim

By D. Chapman (auth.), Henryk Eisenberg, Ephraim Katchalski-Katzir, Lionel A. Manson (eds.)

It used to be a hot, sunny morning in Rehovot. The sky used to be c1ear because it consistently is in June. As I walked to the Institute that morning, too many automobiles have been passing by way of, too many folks have been hurrying onto the Institute's grounds. not anyone used to be smiling, pals have been famous via a moderate nod of the pinnacle. whilst I became the nook, a number of humans already had amassed at the garden in entrance of the Jacob Ziskind construction. This quantity used to be to swell to millions prior to the carrier used to be over. We have been to be joined by means of the President of Israel, its first best Minister, many participants of the cupboard, and different nice, near-great, operating colleagues, and citizens of town. the aim of all this task was once written on everyone's face, and underlined by means of the casket that lay within the rotunda of the construction. His spouse used to be sitting there, his teenagers, his brother, his scholars either earlier and current. you can actually listen the silence of the individuals. I stood inside of for it slow, overlooking the rotunda. an extended line of mourners filed through, supplying their sympathies to the kinfolk. without warning a lady, wearing black, fell to her knees in entrance 9f Rina, sobbing. It was once the spouse of the japanese Ambassador to Israel. I moved to affix the gang outdoor. humans have been status at the garden, gingerly attempting to stay away from stepping on a flower.

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They show the infiuence of saturation both of the inducing substrate Sand the induced substrate R. The middle curves show the counter transport in the region around half-saturation. In the curves to the left (low affinity of R in the upper and of S in the lower curve) no counter transport can be recognized. In the curves to the right (with high affinity of R in the upper and of S in the lower curve) counter transport is recognizable but extremely slow. Thus both very low and very high saturations are unfavorable for the demonstration of counter transport.

Probe-labeled chromatophore membrane at this point causes a decrease of absorbance at 600 nm and an increase of absorbance at 640 nm. It is seen that the apparent shift ofthe long-wave edge ofthe absorption band amounts to approximately 10 nm. ct red shift disappears (traces 8, 9) and the absorbance at 600 nm returns to a value appropriate to the increased occupancy of the membrane by the probe that has occurred in the time between trace 5 and trace 9. 3 2. " It is important to note that the intensity of the absorption band and its shape remain largely unaffected.

Dual wavelength spectroscopy of the red shift (Chance, 1973) of the merocyanine dye was satisfactorily measured by the absorbance difference between 620 and 630 nm in a Johnson Foundation dual wavelength spectrophotometer. The light-induced absorbance changes of the carotenoid pigments of Rhodospiri/lum rubrum were measured by the dual wavelength technique at 530 and 508 nm. Fluorescence changes in the merocyanine dye 36 Britton Chance and Margareta Baltscheffsky were appropriately excited at 577 nm, somewhat displaced from the excitation maximum at 620 nm, and emission was measured at 660 nm, also somewhat displaced from the emission maximum at 640 nm.

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