Purification and partial characterization of a novel hemagglutinating glycoprotein from the cultured mycelia of Hericium erinaceus

文献类型: 外文期刊

第一作者: Cui, Feng-Jie

作者: Cui, Feng-Jie;Li, Yun-Hong;Zan, Xin-Yi;Sun, Wen-Jing;Qian, Jing-Ya;Yang, Yan;Cui, Feng-Jie;Sun, Wen-Jing;Zhou, Qian;Yu, Si-Lian

作者机构:

关键词: Hericium erinaceus, Cultured mycelia;Glycoprotein;Hemagglutinating activity;Structural novelty

期刊名称:PROCESS BIOCHEMISTRY ( 影响因子:3.757; 五年影响因子:3.665 )

ISSN: 1359-5113

年卷期: 2014 年 49 卷 8 期

页码:

收录情况: SCI

摘要: HEG-5, a novel glycoprotein with hemagglutinating activity, was firstly isolated and purified from the cultured mycelia of Hericium erinaceus CZ-2. SDS-PAGE, Native-PAGE and MALDI-TOF-MS proved that HEG-5 was a single band with the molecular weight of approximately 14.4 kDa. HEG-5 had the protein: polysaccharide ratio of approximately 10:1 (%/%) and contained ID-glucose, L-rhamnose, D-galactose and D-mannose with a molar ratio of 1.00:1.09:2.45:7.14 in polysaccharide fraction. HEG-5 was an acidic glycoprotein with a PI value of 6.3 and the higher content of acidic amino acids (Asp, 12.42 +/- 0.25% and Glu, 12.24 +/- 0.26%) in protein fraction. FT-IR and NMR spectra revealed that HEG-5 contained the protein and carbohydrate portions with (1 -> 4)-linked beta-galactose residues and beta-linked glucose residues. Circular dichroism (CD) demonstrated that HEG-5 was a beta-sheet predominant glycoprotein. Hemagglutination assay proved it was a thermo-unstable glycoprotein. The HEG-5 structural novelty was finally presented by protein sequencing and modeling by using MALDI-TOF-MS, NCBI blast search and online SWISS-MODEL Workspace service. (C) 2014 Elsevier Ltd. All rights reserved.

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