Heterospecific Transformation in the Genus Haemophilus
Overview
Molecular Biology
Affiliations
The relationship between nine Haemophilus species and Haemophilus influenzae was studied by DNA-DNA hybridization, by transformation of H. influenzae to streptomycin resistance with heterospecific DNA, by competition of heterospecific DNA for transformation by homospecific DNA and by the lethal effect of heterospecific DNA on competent H. influenzae. H. parainfluenzae, H. parasuis, and H. aegyptius DNA transformed at more than 10% efficiency when compared to homologous transformation, but only H. aegyptius demonstrated, by hybridization, a relative binding ratio of more than 80%. H. aphrophilus and H. paraphrophilus DNA demonstrated a relative binding ratio of less than 30% and transformed H. influenzae at only 10(-5) the efficiency of homologous DNA, but they competed for H. influenzae transformation as well as or better than homospecific DNA. The data indicated that in some of the species sharing the common ecological habitat of the mammalian respiratory tract, sequences necessary for competition and efficient uptake into H. influenzae are present in large numbers in their DNAs, which nevertheless have little overall homology with H. influenzae DNA.
Genome-wide analysis of DNA uptake across the outer membrane of naturally competent .
Mora M, Mell J, Ehrlich G, Ehrlich R, Redfield R iScience. 2021; 24(1):102007.
PMID: 33490915 PMC: 7811141. DOI: 10.1016/j.isci.2020.102007.
Natural competence and the evolution of DNA uptake specificity.
Mell J, Redfield R J Bacteriol. 2014; 196(8):1471-83.
PMID: 24488316 PMC: 3993363. DOI: 10.1128/JB.01293-13.
Harrison L, Simonsen V, Waldman E Clin Microbiol Rev. 2008; 21(4):594-605.
PMID: 18854482 PMC: 2570154. DOI: 10.1128/CMR.00020-08.
Genome dynamics of short oligonucleotides: the example of bacterial DNA uptake enhancing sequences.
Bakkali M PLoS One. 2007; 2(8):e741.
PMID: 17710141 PMC: 1939737. DOI: 10.1371/journal.pone.0000741.
Evolutionary stability of DNA uptake signal sequences in the Pasteurellaceae.
Bakkali M, Chen T, Lee H, Redfield R Proc Natl Acad Sci U S A. 2004; 101(13):4513-8.
PMID: 15070749 PMC: 384778. DOI: 10.1073/pnas.0306366101.