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J Bacteriol. 1979 August; 139(2): 356-361

Lipid and lipopolysaccharide composition of Acholeplasma oculi.

A J Al-Shammari and P F Smith

ABSTRACT

The total lipid content of Acholeplasma oculi comprises 13.3% of the dry weight of the organism and is about equally distributed between the neutral lipids plus glycolipids and the phospholipids. The phospholipids were identified as phosphatidyl glycerol and diphosphatidyl glycerol. The glycolipid fraction contained O-alpha-D-glucopyranosyl-(1 leads to 1)-2,3-diacyl glycerol and O-alpha-D-glucopyranosyl-(1 leads to 2)-O-alpha-D-glucopyranosyl-(1 leads to 1)-2,3-diacyl glycerol. The neutral lipid contained pigmented carotenoids. Hot aqueous phenol extraction of lipid-extracted whole cells yielded a polymeric carbohydrate comprising 2.3% of the dry weight of the organism. The A. oculi lipopolysaccharide was found to contain only neutral sugars and no amino sugar, in contrast to other acholeplasmas. The neutral sugars consisted of fucose, galactose, and glucose in a ratio of 2:19:3.

J Bacteriol. 1979 August; 139(2): 356-361






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