Tryptophanase Jnduction in Pasteurella multocida

概要

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An increase in tryptophanase activity in various conditions was examined in Pasteurella multocida. These experiments suggest strongly that an increase in tryptophanase activity dependent on the supply of an inducer and amino acids is based upon induced synthesis of the enzyme protein. Effects of beef extract, protein digest or vitamin mixture on tryptophanase induction by cells grown in broth were only slight. On the other hand the situation in tryptophanase induction by cells subjected to starvation was different from that by cells grown in broth in several points; starved cells were not capable of forming the enzyme in the presence of an inducer and amino acids, but could produce the enzyme completely depending on the addition of beef extract. Also, glucose possessed an ability to provoke of enzyme induction in such starved cells, although to a small extent. In contrast protein digest or vitamin mixture had not such an ability in starved cells.
大阪府立大学の論文
1967-03-31