DOI: 10.1113/jphysiol.1976.sp011392. On the metabolism of the rod outer segments.

On the metabolism of the rod outer segments.

10.1113/jphysiol.1976.sp011392

Crossref journal-article

Wiley

The Journal of Physiology (311)

Abstract

1. The high energy phosphate esters available for the luminescent reaction of the firefly lantern extract correspond, in the dark adapted rods of the frog, to 7 X 10(‐16) mole of ATP per rod, corresponding to ca. 1‐4 mM. 2. Rods isolated from light adapted eyes contain a smaller amount. 3. The high energy phosphate esters are reduced spontaneously at a rate of 50% in 24 min, in the isolated rods in darkness. 4. Bleaching a few per cent of the rhodopsin molecules of a rod suspension induces a 60% decrease achieved in less than 12 sec. 5. The ionophore A23187 decreases the high energy phosphate esters when the extracellular free Ca concentration is greater than 10(‐7) M, suggesting that ATP is consumed in pumping Ca ions out of the rods, or into the disks contained in the rods, or both.

Bibliography

Carretta, A., & Cavaggioni, A. (1976). On the metabolism of the rod outer segments. The Journal of Physiology, 257(3), 687â697. Portico.

Authors 2

A Carretta (first)
A Cavaggioni (additional)

References 0 Referenced 19

None

Dates

Type	When
Created	10 years, 8 months ago (Dec. 19, 2014, 4:01 a.m.)
Deposited	1 year, 10 months ago (Nov. 6, 2023, 6:56 a.m.)
Indexed	1 year, 9 months ago (Nov. 7, 2023, 3:01 a.m.)
Issued	49 years, 3 months ago (June 1, 1976)
Published	49 years, 3 months ago (June 1, 1976)
Published Online	49 years, 3 months ago (June 1, 1976)
Published Print	49 years, 3 months ago (June 1, 1976)

Funders 0

None

BibTeX

@article{Carretta_1976, title={On the metabolism of the rod outer segments.}, volume={257}, ISSN={1469-7793}, url={http://dx.doi.org/10.1113/jphysiol.1976.sp011392}, DOI={10.1113/jphysiol.1976.sp011392}, number={3}, journal={The Journal of Physiology}, publisher={Wiley}, author={Carretta, A and Cavaggioni, A}, year={1976}, month=jun, pages={687–697} }

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  "abstract": "<jats:p>1. The high energy phosphate esters available for the luminescent reaction of the firefly lantern extract correspond, in the dark adapted rods of the frog, to 7 X 10(\u201016) mole of ATP per rod, corresponding to ca. 1\u20104 mM. 2. Rods isolated from light adapted eyes contain a smaller amount. 3. The high energy phosphate esters are reduced spontaneously at a rate of 50% in 24 min, in the isolated rods in darkness. 4. Bleaching a few per cent of the rhodopsin molecules of a rod suspension induces a 60% decrease achieved in less than 12 sec. 5. The ionophore A23187 decreases the high energy phosphate esters when the extracellular free Ca concentration is greater than 10(\u20107) M, suggesting that ATP is consumed in pumping Ca ions out of the rods, or into the disks contained in the rods, or both.</jats:p>",
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