Actinobacillus pleuropneumoniae serovar 5b str. L20

Names Actinobacillus pleuropneumoniae serovar 5b str. L20
Accession numbers NC_009053
Background Actinobacillus pleuropneumoniae, a Gram-negative, non-motile, facultatively anaerobic Pasteurellaceae, causes porcine pleuropneumonia, a highly contagious disease for which there is no effective vaccine. There are least twelve different serotypes, some of which produce no disease but others cause severe disease. Serotypes vary in different countries. Types 1, 5, 9, 11 and 12 are usually highly virulent and strains 3 and 6 are mild. The bacterium is carried in the tonsils and upper respiratory tract. It is transmitted short distances by droplet infection and only survives outside the pig for a few days.Actinobacillus pleuropneumoniae strain JL03 is an isolate of serotype 3 which is prevalent in China. Its genome is made up of a single circular chromosome encoding 2097 CDSs. It possesses a complete set of genes coding for enzymes of glycolysis, gluconeogenesis and non-oxidative pentose phosphate pathways. Genes coding for the key enzymes of the TCA cycle, citrate synthase, aconitase and isocitrate dehydrogenase as well as the genes coding for malate synthase and isocitrate lyase, essential for the glyoxylate pathway, are missing.The pore-forming Apx toxins, responsible for the hemorrhagic lesions of the disease, are encoded in an operon apxCABD. Different serotypes secrete different sets of Apx toxins, causing variations in their hemolytic and cytotoxic activities. The absence of apxICABD in strain JL03 confirms that it has the moderate toxicity specific to serotype 3.Actinobacillus pleuropneumoniae can use porcine transferrin, hemoglobin and ferrichrome. Approximately 2.6 % of the genome (55 genes) are involved in iron uptake. (HAMAP: ACTPJ)
Strain L20
Complete Yes
Sequencing centre (04-DEC-2006) National Center for Biotechnology Information, NIH, Bethesda, MD 20894, USA
(09-FEB-2007) Institute for Biological Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A
Sequencing quality Level 6: Finished
Sequencing depth NA
Sequencing method NA
Isolation site diseased pig lung
Isolation country Canada
Number of replicons 1
Gram staining properties Negative
Shape Bacilli
Mobility No
Flagellar presence No
Number of membranes 2
Oxygen requirements Facultative
Optimal temperature NA
Temperature range Mesophilic
Habitat HostAssociated
Biotic relationship Symbiotic
Host name Sus Scrofa
Cell arrangement Chains, Pairs, Singles
Sporulation NA
Metabolism NA
Energy source NA
Diseases Fibrinous and necrotizing pleuropneumonia
Pathogenicity No