A Novel Sphingoglycolipid Containing Galacturonic Acid and 2-Hydroxy Fatty Acid in Cellular Lipids of Sphingomonas yanoikuyae

ABSTRACT A novel sphingoglycolipid was isolated from Sphingomonas yanoikuyae , and its structure was identified as a galacturonosyl-β (1→1)-ceramide. This was a characteristic sphingoglycolipid present in S. yanoikuyae and certain other species of Sphingomonas , such as Sphingomonas mali , Sphingomonas terrae , and Sphingomonas macrogoltabidus , but not in the type species of Sphingomonas , Sphingomonas paucimobilis .