high-energy bond

high-energy bond
Chemical bonds that release more than 25kJ/mol on hydrolysis: their importance is that the energy can be used to transfer the hydrolyzed residue to another compound. The risk in using the term is that students may think the bond itself is different in some way, whereas it is the compound that matters. Hydrolysis of creatine phosphate yields 42.7kJ/mol; of phosphoenolpyruvate, 53.2; ATP to ADP, 30.5: the latter is important because it shows that energetically the hydrolysis of creatine phosphate will suffice to reconstitute ATP, hence the use of creatine phosphate in muscle.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

  • high energy bond — a chemical bond whose hydrolysis yields high levels of free energy; such bonds involve phosphate (high energy phosphate b.) or sulfur (high energy sulfur b.) or other mixed anhydride types of chemical structures …   Medical dictionary

  • high energy sulfur bond — a high energy bond containing sulfur, occurring particularly in a variety of thioesters that are high energy compounds (q.v.); the most important such bond is that of the metabolic intermediate acetyl coenzyme A. The energy released by hydrolysis …   Medical dictionary

  • high energy phosphate bond — a high energy bond containing phosphate, occurring in ATP, phosphocreatine, phosphoenolpyruvate, and other phosphate containing high energy compounds; see high energy compounds, under compound. The energy released on hydrolysis of the bond can be …   Medical dictionary

  • high-energy phosphate — an ester, amide, or anhydride of phosphoric acid that contains a high energy phosphate bond (q.v.), e.g., ATP or phosphocreatine …   Medical dictionary

  • energy rich bond — high energy b …   Medical dictionary

  • bond — In chemistry, the force holding two neighboring atoms in place and resisting their separation; a b. is electrovalent if it consists of the attraction between oppositely charged groups, or covalent if it results from the sharing of one, two, or… …   Medical dictionary

  • High-speed rail in China — This article is about high speed rail in the People s Republic of China. For high speed rail in the Republic of China (Taiwan), see Taiwan High Speed Rail. High speed rail (HSR) trains in China A China Railways CRH1 train in Guangzhou. CRH1 is… …   Wikipedia

  • Energy — This article is about the scalar physical quantity. For other uses, see Energy (disambiguation). Energetic redirects here. For other uses, see Energetic (disambiguation) …   Wikipedia

  • High-performance liquid chromatography — An HPLC. From left to right: A pumping device generating a gradient of two different solvents, a steel enforced column and an apparatus for measuring the absorbance. Acronym HPLC Classification Chromatography …   Wikipedia

  • High-fructose corn syrup — (HFCS) is any of a group of corn syrups that has undergone enzymatic processing to increase its fructose content, and is then mixed with pure corn syrup (100% glucose), becoming a high fructose corn syrup; the types are: HFCS 90 (mostly for… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.