Metabolic Generation and Utilization of Phosphate Bond Energy

2006 ◽  
pp. 99-162 ◽  
Author(s):  
Fritz Lipmann
Keyword(s):  
Bond Energy ◽  
Phosphate Bond

The Concept of Phosphate Bond-Energy

Nature ◽  
1953 ◽  
Vol 171 (4365) ◽  
pp. 1147-1149 ◽  
Author(s):  
R. J. GILLESPIE ◽  
G. A. MAW ◽  
C. A. VERNON
Keyword(s):  
Bond Energy ◽  
Phosphate Bond

scholarly journals RELATION OF METABOLISM OF FROG SKIN TO CELLULAR INTEGRITY AND ELECTROLYTE TRANSFER

1953 ◽  
Vol 36 (5) ◽  
pp. 607-615 ◽  
Author(s):  
Norman G. Levinsky ◽  
Wilbur H. Sawyer
Keyword(s):  
Bond Energy ◽  
Frog Skin ◽  
Transfer Mechanism ◽  
Phosphate Bond ◽  
Intracellular Potassium ◽  
Sodium Transfer ◽  
The Common ◽  
Cellular Integrity

1. The transport of sodium by frog skin and the maintenance of normal potassium levels within the cells of the skin are both dependent on metabolism and on a supply of phosphate bond energy. 2. Except for the common requirement of phosphate bond energy, the transfer mechanism for sodium and the mechanism for maintaining intracellular potassium appear to be independent. 3. The xanthines specifically inhibit the sodium transfer mechanism; at higher concentrations, they depress metabolism and cause loss of potassium from the skin.

THE FATE OF ASSIMILATED C14O2 IN THE SUGAR BEET LEAF STUDIED BY DISPLACEMENT WITH C12O2

1957 ◽  
Vol 35 (1) ◽  
pp. 835-843 ◽  
Author(s):  
D. P. Burma ◽  
D. C. Mortimer
Keyword(s):  
Sugar Beet ◽  
Bond Energy ◽  
Sucrose Synthesis ◽  
Phosphate Bond ◽  
Sugar Phosphates

Disks of sugar beet leaf that had assimilated C14O2 in light for 10 to 30 seconds were exposed to C12O2 in light or darkness, or in combinations of both for periods of 4 to 25 minutes. The changes in distribution of C14 among the compounds soluble in 80% ethanol were examined as a function of time for each "flush" treatment. In light, most of the C14 ultimately accumulates in sucrose, while phosphoglycerate, phosphoenolpyruvate, sugar phosphates, glycine, and serine have more transitory roles. In dark, sucrose is formed much more slowly than in light while alanine becomes the main repository of C14. In light following darkness, the accumulation of C14 in alanine is reversed in favor of its accumulation in sucrose, with the sugar phosphates acting as intermediates. In dark following light, the converse does not occur; sugar phosphates and alanine lose, rather than gain, C14, and sucrose shows little tendency to be metabolized. It is suggested that one of the factors directing the course of these interconversions is the level of light-produced phosphate bond energy needed for sucrose synthesis.

THE FATE OF ASSIMILATED C14O2 IN THE SUGAR BEET LEAF STUDIED BY DISPLACEMENT WITH C12O2

1957 ◽  
Vol 35 (10) ◽  
pp. 835-843 ◽  
Author(s):  
D. P. Burma ◽  
D. C. Mortimer
Keyword(s):  
Sugar Beet ◽  
Bond Energy ◽  
Sucrose Synthesis ◽  
Phosphate Bond ◽  
Sugar Phosphates

Disks of sugar beet leaf that had assimilated C14O2 in light for 10 to 30 seconds were exposed to C12O2 in light or darkness, or in combinations of both for periods of 4 to 25 minutes. The changes in distribution of C14 among the compounds soluble in 80% ethanol were examined as a function of time for each "flush" treatment. In light, most of the C14 ultimately accumulates in sucrose, while phosphoglycerate, phosphoenolpyruvate, sugar phosphates, glycine, and serine have more transitory roles. In dark, sucrose is formed much more slowly than in light while alanine becomes the main repository of C14. In light following darkness, the accumulation of C14 in alanine is reversed in favor of its accumulation in sucrose, with the sugar phosphates acting as intermediates. In dark following light, the converse does not occur; sugar phosphates and alanine lose, rather than gain, C14, and sucrose shows little tendency to be metabolized. It is suggested that one of the factors directing the course of these interconversions is the level of light-produced phosphate bond energy needed for sucrose synthesis.

Room-temperature NaI/H2O compression icing: solute–solute interactions

2017 ◽  
Vol 19 (39) ◽  
pp. 26645-26650 ◽  
Author(s):  
Qingxin Zeng ◽  
Chuang Yao ◽  
Kai Wang ◽  
Chang Q. Sun ◽  
Bo Zou
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Bond Energy ◽  
Room Temperature ◽  
Solute Concentration ◽  
Solute Interaction ◽  
Solute Interactions

H–O bond energy governs the PCx for Na/H2O liquid–VI–VII phase transition. Solute concentration affects the path of phase transitions differently with the solute type. Solute–solute interaction lessens the PC2 sensitivity to compression. The PC1 goes along the liquid–VI boundary till the triple phase joint.

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