序列比较

• The study , reported in the february issue of the journal of clinical microbiology , relied on gene sequencing to compare bacteria found on the tongues of those with halitosis and those with fresh breath
  这一研究结果发表在二月的临床微生物学杂志上。文中，研究人员是通过基因序列比较口气有异味和无异味人群口腔内的细菌种类来论证这一结论的。
• We also did not find the same sequence in the genbank . so we think that it is a f48e9 strain specific , and the function of this sequence remain to investigate further more
  值得注意的是：通过序列比较我们发现我国标准强毒f48e9株基因组cdna5 ’端1705 - 1722bp处有一个5 ’ tctctctcctctctcctcc3 ’的一个特殊序列，现在还无证据说明它与病毒之间的关系及其功能。
• Compared relative similarity with the amino acid sequence of reported allergen protein , a peptide fragment located at the site of 183 - 188 , keeeke , was common to different allergens , so we speculated that it might act as the potential epitope
  Tb22kda蛋白与已知过敏原氨基酸序列比较显示，其中183 ? 188位的序列keeeke在不同过敏原中都有存在，推测可能为潜在的抗原决定簇。
• Sequence alignment shows that the fragment of pcr product showed some identities to the masp gene of xenopus laevis , branchiostoma belcheri , the trypsin gene in litopenaeus vannamei and the serine protease gene in aurelia aurita
  Pcr反应产物基因片段大小为630bp ，序列比较结果表明， pcr克隆产物与爪蟾、文昌鱼的masp基因，虾、水母等的胰蛋白酶基因和丝氨酸蛋白酶基因都有一定的同源性。
• In order to develop an accurate and efficient method for the identification of tiger dna , mtdna ctyb sequences of 5 tiger subspecies and 6 other feline species and 6 cervid species were downloaded from genbank , and compared by wdnasis ( v2 . 5 ) software
  为了建立对虎dna进行特异性检测的有效、精确的方法，本研究中，从genbank下载虎及其他6种猫科动物和6种鹿科动物的mtdna细胞色素b基因序列，并用wdnasis ( v2 . 5 )软件进行了种间序列比较。
• Hla - g1 , which is a newly defined non - classical hla class i molecule , plays an important role in mediating immunotolerance and protecting embryo and even some kinds of tumors from nk cells attacking . the full - length coding sequences containing cdna of hla - g1 were cloned from placenta , monocytes and liver cancer tissue of chinese donors . sequence analysis reveals that it is a highly conserved human gene with only two amino acid mutation sites compared to foreign nationality . its truncated form was overexpressed in
  从中国人外周血单个核细胞胎盘组织和肝癌组织等样品中克隆了包含完整hla - g1读框的cdna与国外同行获得的该基因及其蛋白质序列比较分析表明，该基因虽然有着细微的种族特异性，但高度保守并获得了它的截断型重组蛋白，根据蛋白一级结构和同源比较方法，模建了它及其与特异性受体kir2dl4形成复合体的空间结构模拟，预测了它们之间相互作用的特征。
• Sequence comparison indicated that the nucleotide homologies between the ha gene and those from eight other h3 subtype sfv isolates from china are over 95 % , and nucleotide identities between h3 sfv isolates in china and a typical h3 subtype avian influenza virus ( aiv ) strain dkuk1 - 63 are 95 % to 100 % . these might tell us that the ha gene of all h3 subtype sives isolated in china was originally from aiv although the vaccine based on ha do not protect against different subtype of influenza virus , it can provide favorable resistance to infection with antigenic variants within a subtype
  通过与其它7株国内siv分离株和6株genebank中的h3流感病毒ha序列比较分析，结果表明分离自我国不同地区的8株h3siv核苷酸序列同源性均在95 %以上，且与禽流感病毒( aiv )经典代表株dkuk - 63序列同源性在95 - 100 %之间，证实我国h3sivha基因来源于禽的流感病毒。
• By transformation with the genes . plant disease biocontrol bacteria bacillus subtil is aplls and b . megaterium ap25 were isolated from wheat field soils collected from south australia and tai an . enzyme activity analysis on chitin agar and abp media showed that b . subtilis aplls secreted chitinase and b . megaterium ap25 secreted endoglucanase , respectively
  测序后在genebank上进行序列比较，该基因片段同编号为2634966的枯草芽孢杆菌全序列的2599451到2812870 (功能未知)有85的同源性，但同已发表的13种几丁质酶的基因(包括枯草芽孢杆菌几丁质酶基因)的同源性很低，只有30 。
• Four colonies of transformed e . coli dh5 a with clear hydroiyzing zone on the chitin agar were obtained . the gene fragment in these isolates was identified by the methods of plasmid processing . dna sequencing analysis showed that sequence homology between pcr fragment and chromosomal dna of b . subtilis from 2599451 to 2812870 was 85 % , and was 30 % between the fragment and the genes encoding for chitinase of bacillus ( including b . subtilis ) in genebank
  测序并序列比较结果表明该基因片段同已发表的枯草芽孢杆菌几丁质酶和内切葡聚糖酶编码幕因的克隆及重组芽抱杆菌的构建glyb一apre之间的同源性是最高的，为35 % ;同bacz ’了了ussp . bp23ce1b 、 b . p朋刀us内切葡聚糖酶和b . pol理vxap一1 ， 4一内切葡聚糖酶的编码基因的同源性只有27 % 。