title: Structural study of fucoidan from sea cucumber Acaudina molpadioides: a fucoidan containing novel tetrafucose repeating unit.
abstract: Structure of fucoidan from sea cucumber Acaudina molpadioides (Am-FUC) was investigated in this study. Low molecular weight polysaccharide of Am-FUC (Am-LMW) was prepared by enzymatic degradation and assayed by nuclear magnetic resonance. According to the structure of Am-LMW, and referring to previously reported information of Am-FUC oligosaccharides, the structure of Am-FUC was elucidated as [→3-α-l-Fucp-1→3-α-l-Fucp2,4(OSO3(-))-1→3-α-l-Fucp-1→3-α-l-Fucp2(OSO3(-))-1→]n. Compared to other investigated fucoidans, which also consist of tetrafucose repeating units with 1→3-linkages, Am-FUC contains a novel repeating unit distinctive in sulphation pattern.
authors.affiliation: College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China.
authors.forename: Long
authors.initials: L
authors.lastname: Yu
authors.forename: Lei
authors.initials: L
authors.lastname: Ge
authors.forename: Changhu
authors.initials: C
authors.lastname: Xue
authors.forename: Yaoguang
authors.initials: Y
authors.lastname: Chang
authors.forename: Cuiyu
authors.initials: C
authors.lastname: Zhang
authors.forename: Xiaoqi
authors.initials: X
authors.lastname: Xu
authors.forename: Yanchao
authors.initials: Y
authors.lastname: Wang
mesh_terms: D000818:Animals; D002240:Carbohydrate Sequence; D005643:Fucose / Q000737:chemistry*; D008969:Molecular Sequence Data; D015394:Molecular Structure; D008970:Molecular Weight; D011134:Polysaccharides / Q000737:chemistry* / Q000378:metabolism; D012616:Sea Cucumbers / Q000737:chemistry* / Q000378:metabolism
chemical_list: D011134:Polysaccharides; D005643:Fucose; C007789:fucoidan
keywords: Fucoidan; Fucoidanase; NMR; Sea cucumber; Structure