条斑紫菜抗坏血酸过氧化物酶基因的cDNA克隆和序列分析(英文)

被引:6
作者
马凌波
张凤英
马春艳
王素娟
机构
[1] 农业部海洋与河口渔业重点开放实验室
[2] 中国水产科学研究院东海水产研究所
[3] 上海水产大学 上海
[4] 上海
关键词
cDNA; 抗坏血酸过氧化物酶; 条斑紫菜; 红藻;
D O I
暂无
中图分类号
S917.3 [水产植物学];
学科分类号
0908 ;
摘要
利用细胞质抗坏血酸过氧化物酶(APX)基因部分片段为探针,从条斑紫菜(Porhyrayezoensis)叶状体的cDNA文库中筛选出1种新型的编码APX的全长cDNA克隆。该克隆开放阅读框编码242个氨基酸,与高等植物已知的胞质APX序列相似,同时具有两个特征性的保守区域。推导的氨基酸序列具有与在一种单细胞红藻(Galdieriapartite)中发现的APX B相似的杂交类型结构,这种结构可能是红藻或者非绿色光合生物的APX的重要特征。该cDNA克隆编码区G+C含量达到63 7%,其中密码子的第3位G+C含量高达88 4%。本实验得到的抗坏血酸过氧化物酶基因的cDNA序列已登录到GenBank数据库中,登录序号为:AY282755。
引用
收藏
页码:281 / 287
页数:7
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