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-cyclic phosphate
相关语句
  5′-环磷酸
     SYNTHESIS AND BIOLOGICAL ACTIVITY OF DERIVATIVES OF GUANOSINE 3',5'-CYCLIC PHOSPHATE
     鸟嘌呤核苷-3′,5′-环磷酸衍生物的合成及生物活性研究
短句来源
  “5 '-cyclic phosphate”译为未确定词的双语例句
     THE STUDY OF THE STRUCTURE OF URIDINE 3', 5'-CYCLIC PHOSPHATE (c-UMP) CRYSTAL
     脲嘧啶3',5'—环核苷酸(c-UMP)的晶体结构研究
短句来源
     Improvement of the Synthetic Method for Adenosine-3', 5'-cyclic Phosphate (cAMP) and Preliminary Discussion of Reaction Mechanism
     环腺苷—3’,5’—磷酸(cAMP)合成方法的改进及反应机理初探
短句来源
     Hydrolytic Cleavage of Adenosine 5'-Monophosphate and Adenosine-3',5'-Cyclic Phosphate by Rare Earth Metal Ions
     稀土金属离子对5’-AMP和3’,5’-cAMP的水解切断作用
短句来源
     Uridine 3', 5'-cyclic phosphate (c-UMP) crystal is colourless and transparent. The molecular formula is C9H11O8N2P.
     脲嘧啶3’,5’-环核苷酸(c-UMP)结晶为无色透明晶体,分子式为C_9,H_(11)O_8N_2P,属单斜晶系,空间群C_2~1P2。
短句来源
     Blood samples were collected before inhaling NO, 30 min following inhalation of NO, and 2 hand 24 h afther stopped the inhalation. The plasma samples were used to measure the concentrations of nitrite (NO_2~-), guanosine 3', 5' -cyclic phosphate (cGMP), malonaldehyde (MDA) and endothelin 1. The white cells were used to detetmine the activity of nitric oxide synthase (NOS).
     吸入前、吸入后30min和停吸后2h、24h分别取血浆测定NO代谢产物(NO_2~-)的浓度以及环磷酸鸟苷(cGMP)、丙二醛(MDA)和内皮素(ET-1)的水平,取循环白细胞测定一氧化氮合成酶(NOS)的活性。
短句来源
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  相似匹配句对
     The Syntheses of Derivatives of Nucleoside 3' ,5' -Cyclic Phosphate
     环状核苷酸衍生物的合成
短句来源
     THE SYNTHESIS OF ADENOSINE-3′,5- CYCLIC PHOSPHATE
     3′,5′-环化腺苷酸的合成
短句来源
     5?
     心脏指数明显增加 (P <0 .0 5 )。
短句来源
     (5)
     (5)没有发现雌核发育的异精效应。
短句来源
     THE STUDY OF THE STRUCTURE OF URIDINE 3', 5'-CYCLIC PHOSPHATE (c-UMP) CRYSTAL
     脲嘧啶3',5'—环核苷酸(c-UMP)的晶体结构研究
短句来源
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  -cyclic phosphate
When arabinosyladenine-5'-phosphorimidazolide is allowed to decompose in aqueous solution at room temperature and pH 7.2, depending on the buffer, 5-24% is converted to the 2',5'-cyclic phosphate (V).
      
laminae has shown that etioplast envelope membranes are relatively impermeable to gibberellic acid, abscisic acid and adenosine 3',5'-cyclic phosphate.
      
Fluxes of gibberellic and abscisic acids, together with that of adenosine 3',5'-cyclic phosphate, across plastid envelopes durin
      


Uridine 3', 5'-cyclic phosphate (c-UMP) crystal is colourless and transparent. The molecular formula is C9H11O8N2P. The crystal belongs to monoclinic system and its space group is C21-P2. The parameters of unit cell are as follows: a = 10.767(6)A, b = 7.152 (4) A, c = 10.414 (5) A and β = 112.77(31)°. There are two molecules in an unit cell (Z = 2). The diffraction data were collected using PW-1100 four circle dif-fractometer. The number of independent diffraction data amounts to 1658. The structure was...

Uridine 3', 5'-cyclic phosphate (c-UMP) crystal is colourless and transparent. The molecular formula is C9H11O8N2P. The crystal belongs to monoclinic system and its space group is C21-P2. The parameters of unit cell are as follows: a = 10.767(6)A, b = 7.152 (4) A, c = 10.414 (5) A and β = 112.77(31)°. There are two molecules in an unit cell (Z = 2). The diffraction data were collected using PW-1100 four circle dif-fractometer. The number of independent diffraction data amounts to 1658. The structure was determined by applying Patterson analysis, direct method and Fourier synthesis. There are some solvate molecules whose distribution exhibit partial disorder in an unit cell. The structure parameters have been refined by means of block-matrix least-square method, R - 0.084.

脲嘧啶3’,5’-环核苷酸(c-UMP)结晶为无色透明晶体,分子式为C_9,H_(11)O_8N_2P,属单斜晶系,空间群C_2~1P2。晶胞参数α=10.767(6),b=7.152(4),c=1O.414(5),β=112.77(31)°,晶胞内分子数z=2。用PW-1100四圆衍射仪收集衍射强度数据,独立衍射点为1658个。应用Patterson法、直接法和Fourier综合法测定c-UMP分子结构。晶胞中呈现部分无序分布的溶剂分子。以对角矩阵最小二乘法修正结构参数,R=0.084。

The charge distribution of the sugar-cyclic phosphate moiety in the molecules of cyclic AMP and cyclic GMP is calculated by the CNDO/2 method.The results show that the electron density of the two exocyclic oxygens is very great and that of the axial oxygen is a little greater than the equatorial one.Thus it is possible for the two exocyclic oxygens rather than one to be recognized by the bind site of the regulating subunit of the protein kinase. The substitution of the 5′-oxygen by a CH_2 group...

The charge distribution of the sugar-cyclic phosphate moiety in the molecules of cyclic AMP and cyclic GMP is calculated by the CNDO/2 method.The results show that the electron density of the two exocyclic oxygens is very great and that of the axial oxygen is a little greater than the equatorial one.Thus it is possible for the two exocyclic oxygens rather than one to be recognized by the bind site of the regulating subunit of the protein kinase. The substitution of the 5′-oxygen by a CH_2 group may cause an increase in the electron density of the two exocyclic oxygens,but the relation between the above-mentioned quantities remains unchanged.

以CNDO/2法计算了cAMP和cGMP分子中糖一环磷酸部分的电荷分布.结果表明与磷原子相连的两个环外氧原子具有很高的电子密度,而且轴向氧的稍大于平伏氧的.因此,很可能是两个环外氧原子而不是一个环外氧原子为蛋白激酶调解亚基束缚部位识别。以-CH_2取代O5′,可引起环外两个氧原子电子密度的增加,但仍然保持轴向氧的电子密度稍高于平伏氧电子密度的特点。

In this paper we have calculated the electronic structures of the cyclic nucleotides cAMP and cGMP by means of the CNDO/2 method. On basis of the computed charge distributions in the molecules the possible interaction mechanism between the mentioned nucleotides and protein kinase has been discussed. We have showed that in this interactions the essential part perhaps is the sugar-cyclic phosphate one, and it includes electrostatic interactions of both 3' and 5' and exocyclic oxygen atoms and also the hydrogen...

In this paper we have calculated the electronic structures of the cyclic nucleotides cAMP and cGMP by means of the CNDO/2 method. On basis of the computed charge distributions in the molecules the possible interaction mechanism between the mentioned nucleotides and protein kinase has been discussed. We have showed that in this interactions the essential part perhaps is the sugar-cyclic phosphate one, and it includes electrostatic interactions of both 3' and 5' and exocyclic oxygen atoms and also the hydrogen bond interactions of oxygen atoms O3', O5' and O2'. At the same time, we have also discussed the possible actions of bases in regulating activity of two cyclic nucleotides. In addition we have analyzed some hydrogen bonding in both nucleotides cyclic cAMP and cGMP.

本文使用CNDO/2方法完成了5′-甲叉-cAMP和cGMP整个分子的电子结构计算.基于得到的电荷分布,讨论了两种环核苷酸与蛋白激酶作用的可能机理和碱基在调节两种环核苷酸活性方面的可能作用,还分析了两种环核苷酸中存在的一些分子内氢键及其对稳定构象的作用.

 
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