dna拓扑异构酶 meaning in English

dna-topoisomerase
t4 dna topoisomerase

The orf1 proteins of all four chinese senv isolates had two motifs ( ftl and yxxk ) which were conserved in replication - associated proteins . in all four chinese senv isolates , the putative non - structure orf2 protein had a cav - like region . the putative orf3 protein had a serine - rich tract preceded by a cluster of basic amino acids ( r and k ) . database scaning suggested this region had high a percentage of homology with dna topoisomerase i protein of d . melanogaster , and might play an important role in the replication of such single - stranded dna viruses
所有这四个中国分离株，均保留了o即1中与复制有关的保守序列( ftl和yxxk ) :在推测是非结构蛋白的orfz中均含有cav样保守区w ‘ x7一h一x3一c一xl一c一xs一h ; orf3蛋白的碱性氨基酸(精氨酸和赖氨酸)簇后紧接着一个富含丝氨酸的区域，与d . molanogaster的dna拓扑异构酶i有一定的同源性，推测在单链dna的复制中起作用。