Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Biological activity ultraviolet spectrum

Nucleic acid also was found in association with the tuberculin protein. Spiegel-Adolf and Seibert investigated the problem spectrographically, and found that the tuberculin protein ( P.P.D. ) precipitated by trichloroacetic acid exhibited an absorption band at 2650-2670 A. This band was identical with that displayed by deoxyribonucleic acid. Precipitation of the tuberculin protein by ammonium sulfate afforded a product which did not display an absorption band in the ultraviolet region of the spectrum. The substance had a lower phosphorus content than that of products obtained by trichloroacetic acid precipitation. The biological activity was not impaired in any way. [Pg.324]

The ultraviolet absorption spectrum of the coenzyme corresponds to that of uridine. Bromine destroys the uracil moiety of the coenzyme and effects the destruction of biological activity. [Pg.389]

See other pages where Biological activity ultraviolet spectrum is mentioned: [Pg.919]    [Pg.195]    [Pg.254]    [Pg.535]    [Pg.126]    [Pg.9]    [Pg.211]    [Pg.176]    [Pg.659]    [Pg.44]    [Pg.41]    [Pg.871]    [Pg.86]    [Pg.639]    [Pg.259]    [Pg.362]    [Pg.412]   
See also in sourсe #XX -- [ Pg.266 ]



SEARCH



Activity spectrum

Biological Spectrum

© 2024 chempedia.info