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Published on: April 2, 2013
Cellular fatty acid composition from Sarcobium lyticum (Legionella lytica comb. nov.)--an intracellular bacterial
M Palusińska-Szysz1, A Choma, R Russa
1Department of General Microbiology, Maria Curie-Skłododska University, Lublin, Poland.
Abstract:
Legionella lytica comb. nov. an intracellular bacterial pathogen of small free-living amoebae was subjected to cellular fatty acid (FA) analysis employing base and acid catalyzed cleavage, gas-liquid chromatography and mass spectrometry. Both unbranched and branched (iso and anteiso) FA of chains ranging from 14 to 30 carbon atoms occurred. The presence of two long-chain FA: 27-oxo-octacosanoic acid and heptacosane-1,27-dioic acid, characteristic for legionellae, was found. Nine amide-linked 3-hydroxy-FA were revealed. The main 3-hydroxy-fatty acids comprise: 3-OH-14:0, 3-OH-16:0, 3-OH-18:0, 3-OH-i18:0, 3-OH-15:OH, 3-OH-i16:0 amd 3-OH-i17:0. The profile of hydroxy FAs permits allocation of L. lytica to group 3 of legionellae which comprise blue-white fluorescent species.
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