常見例句The nucleic acid was dsDNA and existed as supercoiled circular, relaxed circular and linear molecules.G+C of viral DNA was 45%. 病毒核酸為雙鏈DNA,存在超螺旋型、環(huán)型和線型三種形態(tài),G+C的含量為45%25。Topoisomerase 2 resolves hyperpositively supercoiled DNA before recombination forks and topoisomerase 3 resolves hypernegatively supercoiled DNA after recombination forks. 拓樸異構(gòu)酶可以解開在重組叉之前高度正螺旋結(jié)構(gòu),拓樸異構(gòu)酶3可以解開重組叉之后高度負(fù)螺旋結(jié)構(gòu)。transcriptional-generated supercoil 轉(zhuǎn)錄生成(的)超螺旋transcription-generated supercoil 轉(zhuǎn)錄生成超螺旋transcriptiongenerated supercoil 轉(zhuǎn)錄生成超螺旋Keywords plasmid;supercoiled;transfer efficiency;expression level; 關(guān)鍵詞質(zhì)粒;超螺旋;轉(zhuǎn)染效率;表達(dá); 返回 supercoiled