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Download PDF by Bernard L. Horecker, Earl R. Stadtman: Current topics in cellular regulation

By Bernard L. Horecker, Earl R. Stadtman

ISBN-10: 0121528219

ISBN-13: 9780121528218

Present themes in mobile rules, quantity 20 evaluates the elemental mechanisms keen on the rules of numerous mobile activities.

This e-book discusses the function of glutamine within the movement of nitrogen, law of glycogen synthase task via covalent phosphorylation, and physiological function of PFK phosphorylation. The in vivo modulation of HMG-CoA reductase task, hypotheses at the function of eIF-2 phosphorylation, and ADP-ribosyltransferase from turkey erythrocytes also are elaborated. this article likewise covers the non-enzymic results of vanadate and phosphorylation of liver and muscle PFK.

This quantity is an effective resource for biologists and researchers attracted to advances within the common quarter of mobile legislation.

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Track 1, 8 pmoles eIF-2; track 2, 16 pmoles eIF-2. An autoradiogram is shown here. 52 ROSEMARY JAGUS et al. 4 pmol (ADPR) ®-elF-2 \ Q. 6 pmol / ^ ^D / ^ Q. 5 // / p /Λ^^^Σ^—·—~* L I 10 I 20 I L 1 1 1 30 10 20 30 Time (min) FIG. 9. Effects of ADP-ribosylation on eIF-2 activity. The eIF-2 was ADP-ribosylated as described in the legend for Fig. 8. The activity of eIF-2 was assessed in eIF-2-dependent gel-filtered lysate produced as described {42) in the absence (A) or presence (B) of glucose. ß subunit affects the ability of eIF-2 to restore activity to an eIF-2dependent gel-filtered lysate.

Biol. Chem. 253, 4219-4223 (1978). 47. Levin, D. ,Proc. Nati. Acad. Sci. A. 70, 4 1 - 4 5 (1973). 48. , and London, I. ,Proc. Nati. Acad. Sci. A. 75, 1121-1125 (1978). 49. Levin, D. , and London, I. , Proc. Nati. Acad. Sci. A. 77, 8 3 2 - 8 3 6 (1980). 50. Levin, D. , Ranu, R. , and London, I. ,Proc. Nati. Acad. Sei. SA. 73, 3112-3116 (1976). 51. , J. Biol. Chem. 252, 5692-5700 (1977). 52. Lloyd, M. , Osborne, J. , and Merrick, W. ,J. Biol. Chem. 255, 1189-1193 (1980). 53. , Houston, K. , Woodley, C.

The active fractions ob­ tained after the phosphocellulose step reversed protein synthesis inhi­ bition in heme-deficient lysates and also contained significant amounts of eIF-2, Co-eIF-2B, and Co-eIF-2C activities. Both the Co-eIF-2B and Co-eIF-2C activities in a phosphocellulose-purified RF preparation were almost fully resistant to HRI and ATP. Further attempts to purify this RF preparation by CM-Sephadex chromatography and a glycerol density gradient centrifugation procedure resulted in considerable loss of eIF-2 and Co-eIF-2B activities with an accompanying loss of RF activity.

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Current topics in cellular regulation by Bernard L. Horecker, Earl R. Stadtman

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