2.1.1.114 malfunction a deletion mutant shows arrested development and is sterile when fed the coenzyme Q-deficient Escherichia coli strain GD1 -, 733930 2.1.1.114 malfunction deletion mutants are sterile and show arrested development when fed the coenzyme Q-deficient Escherichia coli strain GD1 -, 733930 2.1.1.114 physiological function the primary role of the enzyme is to serve as an electron carrier in the respiratory electron transport chain in the mitochondrial inner membrane 733306 2.1.1.114 physiological function the primary role of the enzyme is to serve as an electron carrier in the respiratory electron transport chain in the plasma membrane 733306