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
Asa C. Matthews as collector of the United States Internal Revenue. In 1889, President Benjamin Harrison appointed Matthews comptroller of the United States Treasury. In 1893, Matthews wrote a vignette for the World's Fair predicting what life in the U.S. would be like 100 years in the future. His predictions were grandiose, predicting the U.S. having 60 states and controlling all of North America. Matthews died suddenly at his home in Pittsfield, Illinois. Asa C. Matthews Asa Carrington Matthews (March 22, 1833 – June 14, 1908) was an American lawyer, judge, and politician. Born in Pike County, Illinois, Matthews went to the public