大豆DNA去甲基化酶ROS1的生物信息学分析  

Bioinformatics Analysis of DNA Demethylase ROS1 in Soybean

作　　者：梁喜龙[1] 李国兰[1] 崔洪秋[1] 鞠世杰[1] 洪艳华[1] 方淑梅[2] 郑殿峰[1] 

机构地区：[1]黑龙江八一农垦大学农学院,黑龙江大庆163319 [2]黑龙江八一农垦大学生命学院,黑龙江大庆163319

出　　处：《大豆科学》2014年第3期321-324,333,共5页Soybean Science

基　　金：黑龙江省教育厅科学技术研究项目(12521381)

摘　　要：利用NCBI、Phytozome、ExPASy等网站及其数据库,初步确定了大豆DNA去甲基化酶ROS1的蛋白及基因序列、基因拷贝数、理化特性等,并进一步预测分析了二级结构及结构域,同时结合Clustal X2.0和MEGA4.0等软件进行多重序列比对和分子系统进化关系研究。结果显示,大豆ROS1包括6个拷贝,ROS1各拷贝的分子量相近,等电点酸性,具有相似的潜在磷酸化位点,属于不稳定的疏水性蛋白,都位于细胞核内,且不含信号序列。α螺旋是主要的二级结构,均含有DNA_glycosylase,HhH-GPD_domain和HTH_base_excis_C三个结构域。Websites and data bases were employed such as NCBI, Phytozome and ExPASy in this paper to identify the sequences of proteins and genes, gene copies and some physicochemical properties of ROS1 in soybean. Its secondary structure and domain were predicted and analyzed. Meanwhile, phylogenetic tree was constructed based on the sequences of amino acids to analyze the revolutionary relations among different species. The results showed that ROS1 included six copies with similar molecular weight in soybean. There were acid isoelectric points and similar potential phosphorylation sites in the ROS1 proteins but signal sequences were lacked. All copies were all unstable and hydrophobic and were expressed in nucleus, α helix was the main secondary structure. DNA_glycosylase, HhH-GPD_domain and HTH_base_excis_C domains were included in the ROS1 proteins of soybean.

关 键 词：大豆 DNA去甲基化酶 ROS1 生物信息学分析 

分 类 号：S565.1[农业科学—作物学]