By Nathan P. Colowick, Nathan P. Kaplan, Frank Chytil, Donald B. McCormick
The seriously acclaimed laboratory regular, Methods in Enzymology, is without doubt one of the such a lot hugely revered courses within the box of biochemistry. considering the fact that 1955, every one quantity has been eagerly awaited, often consulted, and praised via researchers and reviewers alike. The sequence includes a lot fabric nonetheless proper at the present time - actually a necessary booklet for researchers in all fields of lifestyles sciences
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Additional resources for Vitamins and Coenzymes Part G
S. Orloff, J. DeB. Butler, D. Towne, A. B. Mukhejee, and J. D. Schulman, Pediufr. Res. 15, 1063 (1981). 3 C. Wittwer, B. Wyse, and R. G. Hansen, Anal. Biochem. 122, 213 (1982). 4 C. T. Wittwer, D. Burkhard, K. Ririe, R. Rasmussen, J. Brown, B. W. Wyse, and R. G. Hansen, J. Biol. Chem. 258, 9733 (1983). J S. Dupre, R. Chiaraluce, M. Nardini, C. Cannella, G. Ricci, and D. CavalIini, Anal. Biochetn. 142, 175 (1984). METHODS IN ENZYMOLOGY, VOL. 122 Copyright Q 1986 by Academic Press, Inc. All rights of reproduction in any form reserved.
4) overnight at O-4”. The dialyzed sample is then concentrated with the Amicon PM 10 membrane. Purification of ThPP-ATP Phosphoryl Transferase Step 1. Acetone Powder Preparation. 4), and 40 PM disodium EDTA in a Waring blender. After centrifugation at 1000 g for 10 min, the supernatant is removed and centrifuged at 10,800g for 20 min. 4), and recentrifuged for 20 min at 10,000 g. 07 I /I I I 40 45 Fraction I I I I 50 55 60 65 Number FIG. 2. Elution pattern of cellulose DE-52 column chromatography.
8 ml H20. Add 60 ~1 of 1 N NaOH and incubate for 30 min at 37”. Neutralize the solution with 60 ~1 of 1 N HCl and extract twice with 10 volumes of ethyl acetate saturated with H20, separating the phases by brief centrifugation. 5 Procedure. 5 M Tris buffer and 30 ~1 of dithioerythritol and diluting the solution to a total volume of 300 ~1. 05 M Tris buffer and follow the absorbance at 240 nm until a constant decreasing slope can be determined (-10 min). Add 15 ~1 of pantetheine and again follow the absorbance at 240 nm.