Note: When you enter a date in Microsoft Excel 97, or later and you enter only two digits for the year, Microsoft Excel enters the year as follows: 1  The years 2000 through 2029 if you type 00 through 29 for the year. For example, if you type 5/28/19, Microsoft Excel assumes the date is May 28, 2019.
transamination the process by which amino groups are transferred from one AMINO ACID to form another, using a keto acid as an intermediary. The mechanism takes place in the liver, and is important in the breakdown of excess amino acids to form keto acids and in the formation of new amino acids (perhaps not available in the diet) from keto acids.
Transamination (or aminotransfer) is a chemical reaction that replaces an amine functional group with another amine. In many applications, an amino acid is the substrate. The other substrate is a keto acid, which contains a keto (=O) group. In transamination, the NH 2 group on one molecule is exchanged with the =O group on the other. The original amino acid converts to a keto acid, and the keto acid converts to an amino acid. Transamination in biochemistry is accomplished by enzymes called transaminases or aminotransferases.