Noun
A compound formed by the union of amidogen with an acid element or radical. It may also be regarded as ammonia in which one or more hydrogen atoms have been replaced by an acid atom or radical.
Source: Webster's dictionaryDon't copy nature too closely. Art is an abstraction; as you dream amide nature, extrapolate art from it and concentrate on what you will create as a result. Paul Gauguin
Ceramides (N-acyl-sphingoid bases) are a major subclass of sphingoid base derivatives with an amide -linked fatty acid. Source: Internet
As a pyramidal bond geometry is forced upon the nitrogen atom by the ring strain, the resonance of the amide bond is reduced, and the carbonyl becomes more ketone -like. Source: Internet
Figure 1: Dehydration synthesis (condensation) reaction forming an amide Cis/trans isomers of the peptide group Significant delocalisation of the lone pair of electrons on the nitrogen atom gives the group a partial double bond character. Source: Internet
For asparagine, either product results in the loss of the amide group, hence "deamidation". Source: Internet
For completeness, the proposal that proteins contained amide linkages was made as early as 1882 by the French chemist E. Grimaux. Source: Internet