助手标题
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
共[4]页 共[64]条 当前为第1条到20条
 

相关语句
three bases
The coefficients of the interbasis expansions between three bases (spherical, parabolic, and spheroidal) are studied in detail.
      
However, the human ACO gene promoter differs at three bases within the PPRE from the rat ACO promoter and appears refractory to PPs.
      
An ab initio LCAO SCF calculation has been performed in a small contracted GTO basis set on three bases of ADN.
      
The standard genetic code is a set of rules that relates the 20 canonical amino acids in proteins to groups of three bases in the mRNA.
      
Minor deletions of one to three bases, including a microsatellite of CTT motif were also observed.
      
Sequencing results indicated a difference of three bases between this cloned gene and that published in GenBank.
      
lividans showed that the 46 by sequence was present at each attR' site, whereas only the first three bases, CTT, were retained at each attL' and attB' site.
      
Sequencing of cloned amplified DNA revealed the deletion, which was not present in either parent, of the final three bases of exon 19 in one of the patient's two COL1A2 alleles.
      
After de-trending thePyrola data statistically, correlations were sought between the growth in numbers achieved in each year and the local air temperature (three bases), rainfall and duration of bright sunshine.
      
The results indicate that membrane phosphatidylcholine is presumably a substrate for the exchange with all the three bases, whereas phosphatidylserine exchanges only with ethanolamine and L-serine but not with choline.
      
It was possible to formulate more than 50% of the products in the network with only the three bases available.
      
When all three bases in a codon are changed, the result is recognizable in only about five per cent of cases.
      
Strong rhythms with a period of three bases have been seen while correlating the relative positions of purines and pyrimidines and of the four individual bases in the complete DNA sequence of the viruses ?X174, G4 and fd.
      
Such repeats would ensure that the reading frame is maintained in the case of a deletional event, as slippage over multiples of three bases would be favored.
      
In this paper we propose a simple new hypothesis for code evolution involving a progression from singlet to doublet to triplet codons with a reading mechanism that moves three bases each step.
      
Oligoribonucleotides of five residues havingU at the 5'-end, a purine at the 3'-end and any combination of three bases in the middle is taken as a primitive tRNA (PIT).
      
We measure the resistance of a group of t codons as the number of pairs of those which differ from each other in only one of their three bases.
      
Each cleft is bounded by three bases which correspond to the codon for that amino acid.
      
Alteration of three bases to create a BglII site at this location caused a minor decrease in germinal excision events, but insertion of four bases to create a Cla I site caused a 10-fold decrease in the transposition activity of the Ac element.
      
It was found that there was an unequal 3-way competition between the cations, potassium being perhaps the strongest antagonist of the three bases.
      
 

首页上一页1234下一页尾页 

 
CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社