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
Endiandric acid C Endiandric acid C Endiandric acid C, isolated from the tree "Endiandra introrsa", is a well characterized chemical compound. Endiadric acid C is reported to have better antibiotic activity than ampicillin. This genus of trees is in the family Lauraceae. These trees are found in the north-eastern Australian rainforests and other tropical and subtropical regions. However, they are also found in southern Canada and in Chile. Endiandric acid C is also isolated from the species "E. xanthocarpa". Endiandric acids are also found in "Beilschmiedia" trees, which were categorized under the genus "Endiandra", but moved to their own genus as they found