. Les courants dans la recherche biochimique, 1956 ; vingt-sept essais tracer la voie actuelle de la recherche biochimique et compte tenu de la relation intime de biochimie à la médecine, la physiologie et la biologie. Biochimie -- la recherche. G. ROBERT GREENBERG un excellent potentiel positif élevé à partir de la pyridine accepteur nu- cleotides, mais nonenzymatically cytochrome c est réduit par va- rious composés. Par exemple, il est facilement réduits par tetra- hydrofolic l'acide. Ferricyanure de potassium possède un haut potentiel positives et sa réduction par DPNH peut être suivie d'une baisse de son absorption à 420

• Contributeur: The Book Worm / Alamy Banque D'Images
• ID de l’image: RD7537
• Taille du fichier: 7,1 MB (129,5 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 1231 x 2030 px | 20,8 x 34,4 cm | 8,2 x 13,5 inches | 150dpi

Informations supplémentaires

Cette image appartient au domaine public, ce qui signifie que le droit d’auteur a expiré ou que le titulaire du droit d’auteur a renoncé à ses droits. Les frais facturés par Alamy couvrent l’accès à la copie haute résolution de l’image.

Cette image peut avoir des imperfections car il s’agit d’une image historique ou de reportage.

. Currents in biochemical research, 1956; twenty-seven essays charting the present course of biochemical research and considering the intimate relationship of biochemistry to medicine, physiology, and biology. Biochemistry -- Research. G. ROBERT GREENBERG an excellent high positive-potential acceptor from pyridine nu- cleotides, but cytochrome c is reduced nonenzymatically by va- rious compounds. For example, it is readily reduced by tetra- hydrofolic acid. Potassium ferricyanide possesses a high posi- tive potential and its reduction by DPNH can be followed by a drop in its absorption at 420 mju. This compound may, how- ever, oxidize substances other than DPNH. With crude systems one cannot be sure that the reduction of pyridine nucleotides is coupled to the system being studied. Thus in an extract of pigeon liver acetone powder after dialysis there are substrate sources which bring about the reduction of cytochrome c. Since these sources appear to possess rather negative E'q values, all other conditions being the same, they can play the major role in cytochrome c reduction. Thus reduced pyridine nucleotide derived in a reaction mixture may be as- sociated with the oxidation of only a portion of the hydrogen donor substrate. In the end it may be necessary to make a partial fractionation of the system using other assay methods in order to remove some of these interfering reactions. Consideration may be given here to the effect that a coupled system has on a multi-enzyme reaction sequence. On first glance a coupled DPN-regenerating reaction may be thought of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Green, David Ezra, 1910-. New York, Interscience Publishers

Recherche dans la banque de photos par tags

• bookcentury1900
• bookcollectionameri
• bookcollectionbiodiversity