One of the plasmids present in a Haemophilus somnus strain isolated from nasal discharge of a cattle with respiratory disease was purified and cloned for DNA sequencing. The plasmid was found to be 1065 base pairs long with 39.2% G+C content, and showed no homology to any DNA sequenced so far. It has no capacity to code any protein longer than 43 residues. It is not clear yet if this plasmid codes Haemophilus somnus specific factors.
ASJC Scopus subject areas