D-Amino acids are useful compounds for the preparation of physiologically active peptides and ^-lactam antibiotics such as semisynthetic penicillins and cephalospo-rins. DCase activity was first found in rat liver (1) and microbial cells (2-5) about 40 years ago. These enzymes were examined as to their properties and substrate specificities, and their reaction mechanisms and biological functions were deduced. The enzymes from rat liver and Clos-tridium uracilicum (2) were found to be involved in the degradation of pyrimidine, and the enzyme from Pseudo-

Table 1. Substrate Specificities of Screened Enzymes
Brew Your Own Beer

Brew Your Own Beer

Discover How To Become Your Own Brew Master, With Brew Your Own Beer. It takes more than a recipe to make a great beer. Just using the right ingredients doesn't mean your beer will taste like it was meant to. Most of the time it’s the way a beer is made and served that makes it either an exceptional beer or one that gets dumped into the nearest flower pot.

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