Hydrogen-oxygen bonds

The protein kinase mechanism uses aspartate as a general base, weakening the hydrogen—oxygen bond of the hydroxyl-containing residues. This allows the hydroxyl nucleophile of the substrate to attack the 7-phosphate of ATP, producing a phosphorylated peptide product and ADP (Scheme 2). 

The polarity of the hydrogen-oxygen bond is responsible for much of the force of attraction between water molecules in liquid water. (See Figure 5-15.)... 

In the products there are four hydrogen—oxygen bonds. The total amount of... 

The existence of a hydrogen/oxygen bond has been assumed. The existence of an ionic bond has been assumed. 

The hydrogen-oxygen bond of a hydroxyl group gives a characteristic absorption band in the infrared but, as we may expect, this absorption is considerably influenced by hydrogen bonding. For example, in the vapor state (in which... 

Our studies have also shown that water will react spontaneously with some metals or can be caused to react further by photoexcitlng the adduct. Reaction in all cases leads initially to metal insertion into the hydrogen-oxygen bond. This metal hydroxy-hydride will, for certain metals, undergo photolysis to... 

Thus, 222kcalmol must be transferred to HOH to produce atomic oxygen, which is a measure of the deactivation and stabilization of atomic oxygen in the formation of a water molecule. Another important and unique characteristic of water molecules is their tendency to cluster through intermolecular hydrogen bonds (more properly hydrogen-oxygen bonds) (equation 2). In contrast, for ambient conditions, BH3, CH4, NH3, and HF are monomeric gas molecules (as are CO, CO2, H2S, and SO2). 

Water is the essential matrix for (C, N, O, H)-based life. Thus, all living biopolymers have a water-carbohydrate surface component with hydrogen-oxygen bonding. The... 

Would you predict a nitrogen-oxygen bond to have the same magnitude of bond polarity as a hydrogen-oxygen bond Explain your answer. 

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