A Further Analysis of the Pantothenicless Mutants of Neurospora

Threonine Inhibition in a Strain of Neurospora

“…4). This relief is non-competitive (table 2) 4 The relief of threonine inhibition of UT 77 by the sulfonamide, sulfanilamide.…”

Aromatic Biosynthesis Iv

“…Similarly, other mutants of Neurospora or of bacteria are known to appear completely blocked under some circumstances,but to become partly or even wholly prototrophic on change of temperature, pH, or carbon source, or when vigorously aerated or when primed with a trace of the required factor (cf. Wagner and Haddox, 1951).…”

The Biochemistry of Genetic Factors

“…Although some disillusionment was caused by demon strations that nutritional requirements were not always easily explicable in terms of effects on enzymes (62,63), several cases are now known in which the "one enzyme" explanation appears to be justifi ed. A list of such cases is shown in Table I.…”