title: Diacylglycerolipids isolated from a thermophile cyanobacterium from the Euganean hot springs.
abstract: The Phormidium sp. ETS-05 thermophile blue-green alga is one of the most typical and widespread species of cyanobacteria of the thermal muds of the Euganean hot springs, the therapeutic properties of which have been known since ancient times. The polar diacylglycerolipids of this cyanobacterium consists of monogalactosyldiacylglycerol, digalactosyldiacylglycerol, sulfoquinovosyldiacylglycerol and phosphatidylglycerol. We have isolated and purified these four diacylglycerolipids from ETS-05, and then analysed them for their quantitative and structural features and fatty acid contents. The monogalactosyldiacylglycerol and digalactosyldiacylglycerol show a marked presence of polyunsaturated fatty acids, of which C18 : 4 is the most common. We propose that these glycoglycerolipids can be used as markers for monitoring the thermal mud colonisation process.
authors.affiliation: Dipartimento di Scienze Chimiche, Università di Padova, Padova, Italy. gabriele.marcolongo@unipd.it
authors.forename: Gabriele
authors.initials: G
authors.lastname: Marcolongo
authors.forename: Francesca
authors.initials: F
authors.lastname: de Appolonia
authors.forename: Alfonso
authors.initials: A
authors.lastname: Venzo
authors.forename: Christopher P
authors.initials: CP
authors.lastname: Berrie
authors.forename: Tommaso
authors.initials: T
authors.lastname: Carofiglio
authors.forename: Cristina
authors.initials: C
authors.lastname: Ceschi Berrini
mesh_terms: D000458:Cyanobacteria / Q000737:chemistry* / Q000254:growth & development; D004075:Diglycerides / Q000302:isolation & purification*; D005227:Fatty Acids / Q000737:chemistry; D038983:Galactolipids / Q000302:isolation & purification; D045482:Hot Springs / Q000382:microbiology*; D007558:Italy; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010715:Phosphatidylglycerols / Q000302:isolation & purification
chemical_list: D004075:Diglycerides; D005227:Fatty Acids; D038983:Galactolipids; D010715:Phosphatidylglycerols; C007388:digalactosyldiacylglycerol; C009909:monogalactosyldiacylglycerol