A protoporphyrinogen oxidase tolerant to photobleaching herbicide and derivatives thereof, comprising a polypeptide having the amino acid sequence represented by SEQ ID No.2 or mutated peptides derived therefrom by deletion, addition, substitution, etc. of one or more amino acids in the above amino acid sequence and having an activity substantially equivalent to that of the protoporphyrinogen oxidase. The acquisition of the novel protoporphyrinogen oxidase, which is highly tolerant to photobleaching herbicide and originates in plant, make it possible to construct plants highly tolerant to photobleaching herbicide via the expression of this enzyme in host plants.
一种能耐光漂白
除草剂的
原卟啉原氧化酶及其衍
生物,包括具有
SEQ ID No.2 所代表的
氨基酸序列的
多肽或通过在上述
氨基酸序列中删除、添加、替换等一个或多个
氨基酸而衍生的变异
多肽,其活性与
原卟啉原氧化酶的活性基本相当。新型
原卟啉原氧化酶对光漂白
除草剂具有很强的耐受性,且来源于植物,通过在宿主植物中表达这种酶,可以构建对光漂白
除草剂具有很强耐受性的植物。