Sulfated xylomannans isolated from red seaweeds Chondrophycus papillosus and C. flagelliferus (Ceramiales) from Brazil.
Sulfated xylomannans were isolated from two species of genus Chondrophycus by aqueous extraction followed by KCl fractionation. Structural determination of the native, desulfated and Smith-degraded KCl-precipitated polysaccharides carried out by composition and methylation analysis and NMR spectroscopy (1D and 2D experiments) showed the following general structure: [see text] These xylomannans present different degrees of branching (15-25%) by beta-D-Xylp (70-80%) and beta-D-Manp-2-S (20-30%) and molecular weights (33-222kDa). This is the first report of the presence of a sulfated xylomannan in species of order Ceramiales.
Cardoso
Marco A
MA
Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, PO Box 19046, CEP 81531-990, Curitiba, Paraná, Brazil.
Noseda
Miguel D
MD
Fujii
Mutue T
MT
Zibetti
Rosiane G M
RG
Duarte
Maria E R
ME
D001938:Brazil; D002240:Carbohydrate Sequence; D005591:Chemical Fractionation; D002850:Chromatography, Gel; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D008969:Molecular Sequence Data; D009005:Monosaccharides / Q000032:analysis; D055095:Optics and Photonics; D011134:Polysaccharides / Q000737:chemistry* / Q000302:isolation & purification*; D000461:Rhodophyta / Q000737:chemistry*; D013431:Sulfates / Q000737:chemistry*
D009005:Monosaccharides; D011134:Polysaccharides; D013431:Sulfates