prokaryote造句

• 21 wang l , trawick j d , yamamoto r , zamudio c . genome - wide operon prediction in staphylococcus aureus . nucleic acids res . , 2004 , 32 : 3689 - 3702 . 22 washio t , sasayama j , tomita m . analysis of complete genomes suggests that many prokaryotes do not rely on hairpin formation in transcription termination
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• Homologues of era have been identified in prokaryotes and eukaryotes . there are two domains in era : the n - terminal gtp - binding domain and c - terminal rna binding kh domain . era plays an important role in cell cycle progression at a specific point in the cycle , after chromosome partitioning but before cytokinesis
  Era是在原核和真核生物以及植物中普遍存在的g蛋白，是一个结构上既具有gtp结合结构域又有rna结合结构域、不同于ras的独特的新的g蛋白亚家族。
• Combining the analysis of the conservative region of 16s rrna gene of prokaryote , such as e . coli , rhizobia and several frankia strains , we designed several sets of primers to amplify the 16s rrna gene of the frankia strains tested . through tentative experiments with these primers , we screened out primers uf / ur and ec27f / frl717r
  通过比较已发表的原核生物，如大肠杆菌、根瘤菌和弗兰克氏菌的16srrna基因全序列的保守区，设计了8对引物并筛选出可适用于扩增13株供试菌株16srrna基因接近全长序列的引物： uf ur和ec27f fr1717r (产物大小约1500bp ) 。
• Human bone morphogenetic protein 3 is a member of tgf - b superfamily . lt can induce the differentiation of cartilage and bone tissue in mesenchymal cell . and is important to bone self - repairment and bone development during embryo morphogenesis . in addition , some other biological activities of hbmp - 3 have also been found . such as inducing development of embryo and stimulating differentiation of neural and blood cells . therefore , there is a great prospect in the use of hbmp - 3 . there is trace content of hbmp - 3 in human body . it has been expressed in the expression system of eukaryotes and prokaryotes respectively , but its application is restricted because of defects in the process and modification after translation in prokaryotic cells and higher costs and lower yields existed in eukaryotic expression system
  人骨形成蛋白3 ( hbmp - 3 )属于tgf -超家族的一员，可以诱导间充质细胞分化为软骨和骨，在胚胎时期骨骼发育和骨再生修复中起着重要的作用，而且对胚胎发育过程中中胚层的诱导和分化、造血组织的发育以及神经系统的发育和修复等都起着重要作用，因而hbmp - 3有广阔的市场前景。它在人体内含量极微，尽管研究人员已经在原核细胞和真核细胞表达系统中分别进行了表达，但是由于原核表达系统缺乏翻译后的加工修饰，真核表达系统存在成本高、产量低等特点，限制了其在临床上的应用。
• Depending on cellular location and function of thioredoxins , there are two thioredoxin systems in high plants , one is nadp / thioredoxin system mainly existing in chloroplast of high plant and eucaryote algae and oxygenic photosynthetic prokaryote , which is composed of nadph , nadph - dependent thioredoxin reductase , thioredoxin - f and thioredoxin - m
  在高等植物中，存在两个与硫氧还蛋白密切相关的硫氧还蛋白系统：一个是位于叶绿体中的铁氧还蛋白-硫氧还蛋白系统，该系统中含有两类核基因编码的硫氧还蛋白即f -型trx和m -型trx 。
• Chloroplast genetic engineering , a new technology that could overcome many problems associated with nuclear genetic engineering , is of growing interest for bioproduction of valuable materials . it has several advantages including the extraordinarily high level of transgene expression and environmental safety , the favorable environment for prokaryote gene expression , the absence of " position effect " and gene silencing
  叶绿体基因工程是随着植物遗传转化技术发展刚刚兴起的生物技术，具有超量表达外源基因，为原核基因提供适宜表达环境，消除“位置效应”和基因沉默，环境安全性好等优点，较更适合用于植物生物反应器方面的研究。
• It has been known that polyadenylation of 3 " end of mrna in prokaryotes is different from that of eukaryotes . the poly ( a ) tracts in bacteria are generally short , ranging from 15 - 60 adenylates residues and associated with only 2 - 60 % of the molecule of a given mrna species . mrna polyadenylation of eukaryotes always occurs in the untranslated region , 10 - 30 nucleotides downstream of the hexanucleotide sequence aauaaa
  现在普遍认为细菌许多mrna3 ’端存在多聚腺苷酸尾，但其长度通常较短，大约在15 - 60腺苷酸残基范围，且对某一mrna而言，仅有2 - 60的分子被多聚腺苷酸化。