title: Structural studies of the major glycolipid from Saccharopolyspora genus.
abstract: A major glycolipid was isolated from the well characterized Saccharopolyspora species, S. hirsuta, S. rectivirgula, S. erythraea and one not completely identified strain (Saccharopolyspora sp.). On the basis of sugar and methylation analysis, specific enzymatic and chemical degradations of the carbohydrate moiety, its FAB mass spectrometry and NMR spectroscopy characterizations, the carbohydrate part was shown to be the glycerol linked dimannoside alpha-D-Manp-(1-->3)-alpha-D-Manp-(1-->1/3)Gro. The internal mannose residue is esterified at C-6 by one fatty acid residue, whereas another fatty acyl chain substitutes the primary methylene position of glycerol. The main fatty acyl residues are anteiso-branched heptadecanoic acid and the iso-branched fatty acids iso-17:0, iso-16:0, and iso-18:0, with the former species being predominant. The major glycolipid has potential value for taxonomic and diagnostic purposes, especially in the specific diagnosis of farmer's lung disease.
authors.affiliation: Polish Academy of Sciences, Institute of Immunology and Experimental Therapy, Wroclaw, Poland.
authors.forename: A
authors.initials: A
authors.lastname: Gamian
authors.forename: H
authors.initials: H
authors.lastname: Mordarska
authors.forename: I
authors.initials: I
authors.lastname: Ekiel
authors.forename: J
authors.initials: J
authors.lastname: Ulrich
authors.forename: B
authors.initials: B
authors.lastname: Szponar
authors.forename: J
authors.initials: J
authors.lastname: Defaye
mesh_terms: D002236:Carbohydrate Conformation; D002849:Chromatography, Gas; D002854:Chromatography, Paper; D002855:Chromatography, Thin Layer; D002965:Classification; D005203:Farmer's Lung / Q000382:microbiology; D005227:Fatty Acids / Q000032:analysis / Q000737:chemistry; D005990:Glycerol / Q000032:analysis; D006017:Glycolipids / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008358:Mannose / Q000032:analysis; D015394:Molecular Structure; D016930:Saccharopolyspora / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D005227:Fatty Acids; D006017:Glycolipids; D005990:Glycerol; D008358:Mannose