THE question of the mode of linkage of the ammonia liberated in the hydrolysis of proteins was reviewed by Damodaran [1932] in his paper describing the isolation of asparagine from an enzymic digest of edestin. This work provided the first direct evidence for the long-standing hypothesis that the ammonia so liberated has its origin in the hydrolysis of glutamine and asparagine residues. Shortly...

isolation of pigmented t.violaceum from a patient with endothrix infection associated with the inflammatory and kerion symptoms and also isolation of the non- pigmented strain from another patient with non-inflammatory symptoms, led us to investigate the enzymic activities in both strains. most of the studies on dermatophyte compoxition have shown the relationship between proteolytic enzymes an...

1. The hydrolysis of monolayers of phosphatidyl[Me-(14)C]choline at the air/water interface by phospholipase D (phosphatidylcholine phosphatidohydrolase) was investigated by a surface-radioactivity technique by using a flow counter. 2. Phosphatidylcholine of high specific radioactivity was prepared biosynthetically in good yield from [Me-(14)C]choline by using Saccharomyces cerevisiae. 3. At in...