کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5157519 | 1500594 | 2017 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Two fucosylated chondroitin sulfates from the sea cucumber Eupentacta fraudatrix
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Two fucosylated chondroitin sulfates EF1 and EF2 were isolated from the sea cucumber Eupentacta fraudatrix. Separation of the polysaccharides was performed using anion-exchange chromatography on DEAE-Sephacel by elution of 0.75 M and 1.0 M NaCl solutions. The structures of biopolymers were determined by chemical and NMR spectroscopic methods. The backbone of EF1 was found to be composed of chondroitin sulfate A and E units in a ratio of about 1:1. The core of EF2 along with chondroitin sulfate A and E fragments contained unusual disaccharide repeating units â4)-β-d-GlcpA2S3S-(1 â 3)-β-d-GalpNAc6S-(1â. The main type of branches in both polysaccharides was α-l-Fucp3S4S unit attached to O-3 of GlcA residues. Another type of branches was found to be the disaccharide fragment α-l-Fucp-(1 â 2)-α-l-Fucp3S4S-(1â linked to O-3 of GlcA. The presence of structurally different fucosylated chondroitin sulfates in one species of sea cucumber is rather unusual and has not been described previously.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 164, 15 May 2017, Pages 8-12
Journal: Carbohydrate Polymers - Volume 164, 15 May 2017, Pages 8-12
نویسندگان
Nadezhda E. Ustyuzhanina, Maria I. Bilan, Andrey S. Dmitrenok, Nikolay E. Nifantiev, Anatolii I. Usov,