食品科学 ›› 2009, Vol. 30 ›› Issue (21 ): 13-15.doi: 10.7506/spkx1002-6300-200921001

• 基础研究 •    下一篇

花生过敏原Ara h 2.02 二级结构和B 细胞抗原表位预测

胡纯秋1,2,高金燕1,3,罗春萍1,2,陈红兵1,2,*   

  1. 1.南昌大学 食品科学与技术国家重点实验室 2.南昌大学 中德联合研究院 3.南昌大学生命科学与食品工程学院
  • 收稿日期:2009-07-04 出版日期:2009-11-01 发布日期:2010-12-29
  • 通讯作者: 陈红兵1,2,* E-mail:chbgjy@hotmail.com
  • 基金资助:

    南昌大学食品科学与技术国家重点实验室目标导向项目(SKLF-MB-200807);江西省主要学科学术和技术带头人培养项目(赣科发计字[2004]234 号);教育部新世纪优秀人才支持计划项目(NCET-08-07-04)

Prediction of Secondary Structure and B Cell Epitopes of Peanut Allergen Ara h 2.02

HU Chun-qiu1,2,GAO Jin-yan1,3,LUO Chun-ping1,2,CHEN Hong-bing1,2,*   

  1. 1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China;
    2. Sino-German Joint Research Institute, Nanchang University, Nanchang 330047, China;
    3. School of Life Sciences and Food Engineering, Nanchang University, Nanchang 330047, China
  • Received:2009-07-04 Online:2009-11-01 Published:2010-12-29
  • Contact: CHEN Hong-bing1,2,* E-mail:chbgjy@hotmail.com

摘要:

为预测花生过敏原Ara h 2.02 的二级结构和B 细胞抗原表位,通过Genbank 数据库搜索到Ara h 2.02 基因,并推导出其相应的氨基酸序列,采用SOPMA 和DNAStar 软件预测该蛋白质的二级结构以及通过Jameson-Wolf 法、Kyte-Doolittle 法、Emini 法和Karplus-Schulz 法分别预测其抗原指数、亲水性、表面可性、柔韧性等参数,并综合分析预测该蛋白的B 细胞抗原表位。结果表明:在序列28~31、56~73、76~90、92、148、156~158、168~169 区域最可能是Ara h 2.02 蛋白的B 细胞抗原表位的优势区域。该结果将为寻找Ara h 2.02 的最佳优势表位提供支持,同时为该蛋白单克隆抗体的制备等研究提供理论依据。

关键词: Ara h 2.02, 花生过敏, 二级结构, B 细胞表位

Abstract:

In order to predict the secondary structure and B cell epitopes of peanut allergen Ara h 2.02, the gene of Ara h 2.02 was searched in Genbank and its amino sequence was deduced. Meanwhile, its secondary structure was predicted with DNAStar and SOMPA, and antigenicity. hydrophilicity, surface probability and flexibility was predicted using the methods of Jameson- Wolf, Kyte-Doolittle, Emini and Karplus-eSchulz, respectively. B-cell epitopes of Ara h 2.02 were further predicted based on the comprehensive prediction analysis. Results indicated that B-cell epitopes had the high probability in the regions of 28-31, 56-73, 76-90, 92, 148, 156-158, and 168-169. These investigations will be beneficial to epitope localization of Ara h 2.02 and monoclonal antibody preparation in the future.

Key words: Ara h 2.02, peanut allergy, secondary structure, B-cell epitopes

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