Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Homofermentative production of d-lactate with the E. coli RR1 pta ppc double mutant. The dotted line indicates the time when the culture was shifted from aerobic conditions to anaerobic conditions. The experiment was performed in triplicate, and the standard deviations were less than 10%. Symbols: ○, cell dry weight; □, glucose concentration; (intermittent feeding); ⧫, d-lactate concentration; ▴, succinate concentration.
