Gwinn, M. L., Ramanathan, R., Smith, H. O., Tomb, J. F.
A New Transformation-deficient Mutant of Haemophilus influenzae Rd With Normal DNA Uptake
J Bacteriol. 1998 Feb 01; 180(3): 746-8.
Haemophilus influenzae Rd is a gram-negative natural transformer. A mutant strain, RJ248, that has normal DNA uptake and translocation but whose transformation frequency is 300 times lower than that of wild-type H. influenzae and whose phage recombination is 8 times lower was isolated. The affected gene, comM, is induced during competence development in wild-type H. influenzae but not in RJ248.