Mutations in the deduced amino acid sequences of σ3 proteins used to define sequences that modulate susceptibility of σ3 to proteolysis

σ3 proteinLocation and nature of mutation(s)
Mutant A26, Y→C
Mutant B130, E→K
PI 3-1354, Y→H
Mutant A-B26, Y→C; 130, E→K
Mutant A-C26, Y→C; 354, Y→H
PI 2A1130, E→K; 354, Y→H
L/C26, Y→C; 130, E→K; 354, Y→H