Acetyl group known as paracetamol), and acetylsalicylic acid (better known as aspirin). The introduction of an acetyl group into a molecule is called acetylation. In biological organisms, acetyl groups are commonly transferred from acetyl-CoA to other organic molecules. Acetyl-CoA is an intermediate both in the biological synthesis and in the breakdown of many organic molecules. Acetyl-CoA is also created during the second stage of cellular respiration, the Krebs Cycle, by the action of pyruvate dehydrogenase on pyruvic acid. Histones and other proteins are often modified by acetylation. For example, on the DNA level, histone acetylation by acetyltransferases (HATs) causes an expansion of
Willow pattern set up on his own account in c.1793 in Stoke-on-Trent producing earthenwares: he is thought to have engraved versions of willow designs for Spode and for various other factories. It was probably for Spode that the English Willow pattern was created and first produced perhaps around 1790, because it incorporates particular, distinctive features of earlier Chinese willow scenes which were already known and imitated at the Spode factory. The Willow pattern is commonly presented in a circular or ovate frame. The waterside landscape represents a garden in the lower right side, in which a large two-storey pavilion stands. Approached by