A SIMPLE KEY FOR POS88 UNVEILED

to review the impression of several constraints on mutational tolerance all through range, we chose E. coli dihydrofolate reductase (DHFR) as a product procedure. DHFR is A vital enzyme in folate metabolism that lowers dihydrofolate to tetrahydrofolate which is needed for thymidine production. making use of this activity as the basis for an in vivo