title: Structural investigation of a novel rhamnoglucogalactan isolated from the fruiting bodies of the fungus Hericium erinaceus.
abstract: A new heteropolysaccharide (HEP-1) was isolated from the fruiting bodies of Hericium erinaceus. It was estimated to have a molecular weight of 1.8x10(4) da and showed [alpha](D)(20) +129 (c 0.295, H(2)O). HEP-1 is composed of rhamnose, galactose, and glucose in the ratio of 1.19:3.81:1.00. Its structural features were investigated using composition analysis, methylation analysis, partial hydrolysis, and IR and NMR spectroscopy. The results showed that HEP-1 has a (1-->6)-linked alpha-d-galactopyranosyl backbone with branches that are composed of rhamnose and glucose attached to O-2.
authors.affiliation: Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Science, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, 201203 Shanghai, China.
authors.forename: Lian-meng
authors.initials: LM
authors.lastname: Jia
authors.forename: Liu
authors.initials: L
authors.lastname: Liu
authors.forename: Qun
authors.initials: Q
authors.lastname: Dong
authors.forename: Ji-nian
authors.initials: JN
authors.lastname: Fang
mesh_terms: D001487:Basidiomycota / Q000737:chemistry; D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D048690:Fruiting Bodies, Fungal / Q000737:chemistry*; D005690:Galactose / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D005947:Glucose / Q000032:analysis; D009682:Magnetic Resonance Spectroscopy; D011134:Polysaccharides / Q000737:chemistry* / Q000302:isolation & purification; D012210:Rhamnose / Q000032:analysis
chemical_list: D011134:Polysaccharides; D005947:Glucose; D012210:Rhamnose; D005690:Galactose