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Position: Home > Articles > Cloning and Expression Analysis of Avenin-like Gene in Aegilops speltoides Biotechnology Bulletin 2008,2008 (5) 122-125

拟斯卑尔脱山羊草基因的克隆与表达研究

作  者:
陈鹏;汪长东;黄阜峰;汪越胜;杨广笑;何光源
单  位:
华中科技大学生命科学与技术学院中英联合实验室教育部分子生物物理重点实验室
关键词:
拟斯卑尔脱山羊草;Avenin-like;储藏蛋白;基因克隆
摘  要:
Avenin-like基因是近年来发现的一类新基因。根据小麦avenin-like基因的保守序列,设计合成了一对特异性引物,对拟斯卑尔脱山羊草(Aegilops speltoides,SS)的基因组DNA进行avenin-like基因扩增、克隆、序列测定和表达分析,发现了一个新型avenin-like基因。基因长855bp,编码284个氨基酸残基,分子量约为33kD。Southernblot结果表明其属于多基因家族。RT-PCR证实了avenin-like基因在籽粒胚乳中特异性表达。其对应的氨基酸序列含有18个半胱氨酸残基,可以形成7对分子内二硫键。研究表明Avenin-like蛋白是一类新型的储藏蛋白。这为小麦加工品质的改良提供了理论依据和遗传资源。
译  名:
Cloning and Expression Analysis of Avenin-like Gene in Aegilops speltoides
作  者:
Chen Peng Wang Changdong Huang Fufeng Wang Yuesheng Yang Guangxiao He Guangyuan(China-UK HUST-RRes Genetic Engineering and Genomics Joint Laboratory Huazhong University of Science and Technology,Wuhan 430074)
关键词:
Aegilops speltoides Avenin-like Seed storage protein Gene cloning
摘  要:
Avenin-like genes were reported as a new type gene in recent years.In present study,one novel avenin-like gene was cloned from Aegilops speltoides(SS)by an homologous method.This gene is 855bp in length,encoding a protein of 284 amino acids with molecular weight about 33kD.Southern blot results showed that it belongs to a multigene family.The expression of avenin-like gene was revealed by RT-PCR.The results showed the avenin-like gene was expressed specifically in the endosperm of Aegilops speltoides.The corresponding protein comprised 18 cysteine residues which can be able to form 7 intramolecular disulfide bonds.These provide a basis for quality improvement of wheat and an extensive reservoir of genetic resources.

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