𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The effect of U.V.-light on some components of the nucleic acids. V. Reversibility of “the first irreversible reaction” under special conditions

✍ Scribed by R. Beukers; J. Ijlstra; W. Berends


Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
197 KB
Volume
78
Category
Article
ISSN
0165-0513

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

The extent to which the extinction of thymine and orotic acid decreases on irradiation by U.V. light depends on the environmental conditions. Successive irradiations in different milieus ultimately lead to a degree of conversion which is wholly determined by the conditions during the last irradiation. Consequently it is possible to revert the substances that seem to have disappeared to the original products.


📜 SIMILAR VOLUMES


The effect of U.V.-light on some compone
✍ R. Beukers; J. Ijlstra; W. Berends 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 163 KB

## Abstract The percentage of orotic acid, sensitive to ultraviolet light, has been found to depend on the concentration of oxygen in solution. Diminishing this concentration by bubbling through nitrogen or hydrogen, the sensitivity increases from 14 % to 37 %. Saturation of the solution with oxyge

The effect of ultraviolet light on some
✍ R. Beukers; J. Ijlstra; W. Berends 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 214 KB

## Abstract The rapid decrease in extinction of deoxyribonucleic acid in the first moments of irradiation with U.V. light (2537 Å) is due to the conversion of the pyrimidines into low‐absorbing substances. Thymine in this natural polymer reacts according to the so‐called “first irreversible reactio

The effects of ultraviolet light on some
✍ R. Beukers; J. Ijlstra; W. Berends 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 231 KB

## Abstract Apurinic acid, prepared from deoxyribonucleic acid, is destroyed by ultraviolet light much more rapidly than would be expected from the behaviour of the component pyrimidine‐nucleotides under this radiation. It is confirmed by analysis that both thymine and cytosine are sensitive. The