Growth Inhibition by Phenylalanine inEuglena gracilis

Growth Inhibition of Tubercle Bacilli by Analogues of Phenylalanine.

Many studies have been devoted to the inhibitory action of various metabolite analogues on microbial growth. In most of this work, however, such nonpathogens as the yeasts, lactobacilli, and Escherichia coli have served as the test organism and there has been little attempt to correlate or extend the studies to pathogenic bacteria, especially those organisms synthesizing their own growth factor...

REOVIRUS GROWTH INHIBITION BY ROTAVIRUS FOLLOWING COINFECTION

Growth Inhibition in Thiobacillus neapolitanus by Histidine, Methionine, Phenylalanine, and Threonine.

Thiobacillus neapolitanus, a strict chemoautotroph, is sensitive to the addition of 10(-4)m methionine, histidine, threonine, or phenylalanine to the thiosulfate medium on which it grows. When histidine, threonine, or phenylalanine are added at the time of inoculation, spontaneous mutants tolerant to the three amino acids are selected. These mutants appear to result from a single genetic change...

Growth Characteristics of Rhodotorula gracilis

Previous studies have shown that Rhodotorula gracilis is capable of forming large quantities of fat under suitable conditions (Enebo et al., 1946; Pan et al., 1949; Steinberg and Ordal, 1954a). It also has been demonstrated that growth and fat formation takes place in two distinct phases (Enebo et al., 1946). Steinberg and Ordal (1954a, 1954b) have studied the fattening phase in some detail; ho...

Inhibition by phenylalanine of thiazole biosynthesis in Escherichia coli.

Phenylalanine inhibited thiazole biosynthesis in a thiamine-regulatory mutant of Escherichia coli, and the inhibition was overcome by tyrosine.