5 ESSENTIAL ELEMENTS FOR POS88

to check the effects of a number of constraints on mutational tolerance during variety, we selected E. coli dihydrofolate reductase (DHFR) like a model system. DHFR is An important enzyme in folate metabolism that minimizes dihydrofolate to tetrahydrofolate and is essential for thymidine production. employing this action as The idea for an in vivo