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.
The latter applies to the group of the branched-chain amino acids, which comprises leucine, isoleucine, and valine. In the case of alanine, the Î±-keto acid that accepts the amino group is Î±-ketoglutarate; this also applies to most other amino acids.Transamination is freely reversible; therefore, both glutamate and Î±-ketoglutarate are substrates of multiple transaminases.his is illustrated here for alanine, which transfers its amino group to Î±-ketoglutarate to become pyruvate. *Since we already know how to degrade pyruvate, transamination is all that is required to account for the degradation of alanine.