Production of a monoclonal antibody specific for high molecular weight glutenin subunits (HMW-GS) in wheat and its antigenic determinant

文献类型： 外文期刊

第一作者： Wang, HQ

作者： Wang, HQ;Zhang, XY;Wang, HM;Pang, BS

作者机构：

关键词： wheat;HWM-GS;monoclonal antibody;antigenic determinant;immunoblotting

期刊名称：SCIENCE IN CHINA SERIES C-LIFE SCIENCES （ 影响因子：1.61； 五年影响因子：1.148 ）

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收录情况： SCI

摘要： Wheat high molecular weight glutenin subunits (HMW-GS) 1Bx14 and 1By15 isolated by preparative SDS-PAGE are used as antigen to immunize BALB/c mice. Subcutaneous inoculation of the antigen is performed. The intra-peritoneal injection is completed 3 days before fusion with myeloma cell (SP2/0) via PEG-1500. The fusion cells are selected by indirect enzyme-linked immuno-sorbent assay (ELISA). Positive hybrid cells are further verified three times by limit dilution of the culture cells. A hybridoma cellline is successfully obtained. The monoclonal antibody belongs to lgG1 subclass. In immunoblotting, the antibody binds to all HMW-GS of T. aestivum cultivars, but does not bind to other storage proteins in seeds of wheat. This result is consisting withthe high homology in amino acid sequences among the HMW glutenin subunits in wheat. The antibody also binds to HMW-GS storage proteins in Aegilops squarrosa and T. durum (durum wheat). Furthermore, it also binds to HMW storage proteins in Secale cereale(rye), Hordeum vulgare (barley). However, it never binds seed storage proteins in other cereals such as maize, oat, rice, foxtail millet, sorghum etc. The antigen determinant recognized by the antibody has been located within hexapeptide [PGQGQQ] or / and nonapeptide [GYYPTSPQQ] in the central repetitive region of HMW-GS.

分类号： Q1

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