Biochemical characterisation of some non fermenting, non arginine hydrolysing mycoplasmas of ruminants.
The pattern and kinetics of substrate oxidation by type and recent field strains of Mycoplasma agalactiae, Mycoplasma bovis, Mycoplasma bovigenitalium and Mycoplasma ovine/caprine serogroup 11 were investigated by measurement of oxygen uptake. Metabolism of a range of organic acids, sugars and alcohols was detected. All the test strains were unable to oxidise sugars, glycerol and the organic acids, fumarate, malate and alpha-ketoglutarate (1 mM). All strains oxidised organic acid l-lactate, 2-oxobutyrate and pyruvate and demonstrated the ability to oxidise alcohols, particularly isopropanol, which was oxidised at a high rate and high affinity (0.5 mol/mol isopropanol). Its oxidation was consistent with acetone formation, which may be of important in relation to pathogenicity. All strains oxidised similar substrates, however differences were observed between strains in terms of the relative rates and kinetic values for some substrates.
Department of Life Sciences, King's College London, 150 Stamford Street, London SE1 9NN, UK.
Liaqat Ali
LA
Khan
Guido R
GR
Loria
Ana Sofia
AS
Ramirez
Robin A J
RA
Nicholas
Roger J
RJ
Miles
Mark D
MD
Fielder
D000438:Alcohols; D000818:Animals; D001120:Arginine / Q000378:metabolism; D002264:Carboxylic Acids / Q000378:metabolism; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology*; D015169:Colony Count, Microbial / Q000662:veterinary; D005285:Fermentation; D006868:Hydrolysis; D007700:Kinetics; D009174:Mycoplasma / Q000378:metabolism*; D012756:Sheep; D012757:Sheep Diseases / Q000382:microbiology*
D000438:Alcohols; D002264:Carboxylic Acids; D001120:Arginine