Current topics in cellular regulation Vol. 5 by Bernard L. Horecker, Earl R. Stadtman PDF

By Bernard L. Horecker, Earl R. Stadtman

ISBN-10: 0121528057

ISBN-13: 9780121528058

Show description

Read Online or Download Current topics in cellular regulation Vol. 5 PDF

Similar nonfiction_12 books

Fueling the planet : the past, present, and future of energy - download pdf or read online

"Professor Michael B. McElroy leads a finished exam of power, together with its historical past, use on this planet this day, and environmental consequences"--Container.

Stainless-Steel Pipe Flanges for Water Service—Sizes 2 In. by AWWA PDF

This regular describes chrome steel, ring-type, slip-on flanges and blind flanges to be used together with stainless steel pipe utilized in water carrier, together with fabrics, layout, manufacture, inspection, and trying out. the aim of this ordinary is to supply minimal fabric requisites and dimensions for numerous stainless steel flanges for attachment to chrome steel piping structures.

Get Disaster Planning for Libraries: Process and Guidelines PDF

Libraries are always in danger. on a daily basis, many libraries and their collections are broken by way of fireplace, flooding, excessive winds, strength outages, and legal behaviour. each library wishes a plan to guard its employees, websites and collections, together with yours. catastrophe making plans for Libraries presents a pragmatic consultant to constructing a complete plan for any library.

Additional info for Current topics in cellular regulation Vol. 5

Example text

The re­ sults suggest that caffeine (a purine analog) when included in the extrac­ tion fluid binds to the cyclic 3',5'-AMP sites on the enzyme, preventing the cyclic nucleotide or AMP from having accesses to these sites and thus preventing enzyme activation. This view is supported by the demon­ stration that the binding of cyclic 3',5'-AMP to pure phosphofructokinase is inhibited by caffeine (51). Furthermore, preincubation of the pure en­ zyme with cyclic 3',5'-AMP prevented inhibition by caffeine and by ATP 36 TAG E.

The question is still unresolved and is currently being investigated in our laboratory. VII. Physiological Interpretation of Phosphofructokinase Regulation A . Synchrony between Cellular Demand for High Energy and Enzyme Activity Variations in phosphofructokinase activity in connection with different physiological conditions have always been determined by changes in substrate levels in the cell. An increase in the levels of substrates beyond fructose-6-P in the glycolytic scheme suggests enzyme activation.

The mechanism of stimulation of fluke phosphofructokinase has been better understood in the light of more recent investigations by Stone and Mansour (120, 121). The enzyme which was isolated and partially puri­ fied from control parasites is almost completely inactive even when as­ sayed in the presence of concentrations of fructose-6-P as high as 10 mM and in the presence of different concentrations of ATP:Mg- + . There­ fore, the inactivity of the enzyme is not due to kinetic inhibition. 16 M of ammonium sulfate.

Download PDF sample

Current topics in cellular regulation Vol. 5 by Bernard L. Horecker, Earl R. Stadtman


by John
4.1

Rated 4.62 of 5 – based on 23 votes