منابع مشابه
Active-site studies of enzymes by X-ray diffraction methods.
X-Ray diffraction is the only method currently available for the determination of the detailed three-dimensional structure of macromolecules. In this article, the principles behind the use of X-ray crystallography in the study of protein structure are presented. The results obtained in its application to several enzymes are discussed, as well as the limitations of the method.
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The active transport process, so important in cell function, has been studied in the past with intact cells. Models which have arisen from this work all depend on: first, a specific protein to recognize the substrate; second, translocation of the substrate across the cell membrane; third, release of substrate within the cell and restoration of the system to its initial state. These steps are ad...
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These experiments indicate that the direct action of x-rays in more powerful doses than can be applied therapeutically is somewhat injurious to tumor cells, but by no means destroys them. Experiment 1 also indicates that the cancer cells establish a resistance to the x-rays after repeated doses. This harmonizes with the experience of clinicians who have succeeded in checking cancerous growths f...
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With the detoxicated seedling of a potato cultivation breed named “Mire” as the material, the effect of auxins CCC, 6-BA, and active carbon to microtubers of potato (Solanum tubersum L.) was investigated under the in-vitro circumstances. The result indicated the exogenous auxins improved the production and quality of microtubers of potatoes. The effect of induction can be described as CCC > CCC...
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ژورنال
عنوان ژورنال: NIPPON KAGAKU KAISHI
سال: 1935
ISSN: 0369-4208,2185-0909
DOI: 10.1246/nikkashi1921.56.124