CC-4753 rbcS1-E43A mt
$30.00
From Robert J. Spreitzer, University of Nebraska, July 2014
Phenotype: requires acetate at 35 °C, temperature-conditional
Directed mutagenesis and nuclear-gene transformation of rbcS∆-T60-3 mt- (CC-4415) were used to create an E43A substitution (GAG-GCC) in the Rubisco small subunit, which causes a decrease in Rubisco CO2/O2 specificity and holoenzyme stability (Genkov and Spreitzer 2009). This mutant can grow on minimal medium at 25 °C, but dies on minimal medium at 35 °C. The strain has been maintained with acetate medium in darkness to prevent selection for secondary mutations that may improve Rubisco function or stability.
Genkov T, Spreitzer RJ (2009) Highly conserved small subunit residues influence Rubisco large subunit catalysis. J Biol Chem 284:30105-30112