guanine造句
例句与造句
- Monofunctional alkylating agent n - methyl - n ' - nitro - n - nitrosoguanidine ( mnng ) is a widely spread environmental mutagen and carcinogen that targets dna and proteins to generate adducts . among the adducts , o6 - alkyl guanine is the predominant mutagenic lesion because of its mispairing properties , which can eventually lead to chromosomal aberrations , point mutations , and cell death . this lesion also appears to be involved in tumor initiation , particularly in gastric carcinogenesis
单功能烷化剂n -甲基- n -硝基- n -亚硝基胍( mnng )是一种在环境中广泛存在的化学诱变剂和致癌剂，它能和dna及蛋白质等生物大分子形成加合物( adduct ) ，其引起的与突变有关的主要dna损伤类型是o ~ 6 -甲基鸟嘌呤，这种损伤与肿瘤尤其是胃癌的发生密切相关。 - Some tendency of tn5gusa5 transposition were found that all preferred sites of tn5gusa5 in xcc 8004 genomic dna are in at - rich regions ; target sequences of tn5gusa5 have some features that the probabilities of guanine and cytosine are high respectively at the head and tail base of target sequence ; the level of gene transcription does not influence insertion density of tn5gusa5 significantly
结果表明， tn5gusa5插入位点有一定的规律性： tn5gusa5在xcc8004基因组上倾向于插入低gc含量( 50左右的区域插入密度最高)区段；插入位点的靶序列有一定的特异性，在靶序列的首位鸟嘌呤出现的几率高，而在靶序列的末位胞嘧啶出现几率高； tn5gusa5的插入密度与该区段基因的转录水平无明显关系。 - It's difficult to find guanine in a sentence. 用guanine造句挺难的
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