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ntp
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  ntp
     (5) PCr/Pi and β NTP/Pi ratios both decrease, and PCr/Pi decreases faster than β NTP/Pi;
     (5)PCr/Pi和βNTP/Pi比值均下降,且PCr/Pi比βNTP/Pi下降得快;
短句来源
     (3) β NTP (usually presenting ATP) peak falls more solwly than PCr peak;
     (3)βNTP(通常用来表示ATP的量)变化较小;
短句来源
     (6) PME/β NTP ratio increases; (7) tumor pH decreases, and is correlated with tumor sizes, PCr/Pi,β NTP/Pi and (PCr+β NTP)/Pi ratios.
     (6)PME/βNTP比值升高;
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  相似匹配句对
     (6) PME/β NTP ratio increases; (7) tumor pH decreases, and is correlated with tumor sizes, PCr/Pi,β NTP/Pi and (PCr+β NTP)/Pi ratios.
     (6)PME/βNTP比值升高;
短句来源
     Gly.
     Gly。
短句来源
     (3) β NTP (usually presenting ATP) peak falls more solwly than PCr peak;
     (3)βNTP(通常用来表示ATP的量)变化较小;
短句来源
     Some gene model for mammalian sex determination such as Zgene model and DSSgene model etc.
     X连锁的DAX基因;
短句来源
     Study of Performance for NTP Time Synchronization
     NTP时间同步性能研究
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  ntp
In human milk we previously found catalytic antibodies (abzymes) catalyzing hydrolysis of DNA, RNA, NMP, NDP, and NTP and also phosphorylation of proteins and lipids.
      
A new, simple, and ingenious method for enzymatic synthesis of deoxy-and ribonucleoside-5'-triphosphates (dNTP and NTP, respectively) has been developed.
      
Interaction of HIV-1 Reverse Transcriptase and T7 RNA Polymerase with Phosphonate Analogs of NTP and Inorganic Pyrophosphate
      
The NTP analogs are very weak inhibitors of T7 RNAP, whereas HIV RT is more sensitive to this type of compounds.
      
On the basis of the X-ray crystallographic data on the T7 RNAP complex with a template and NTP, we have modeled the binding of some derivatives of bisphosphonic acid in the active center of the enzyme.
      
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The crystal structure of 3,3′,3″……nitrilotris……propionamide (NTP) has been determined by direct methods. The crystal is trigonal, space group R3c, with hexagonal parameters a=b=11.306 and c=15.723 Each unit cell contains six molecules. Some important features of the crystal structure are discussed.In this paper we will discuss several theoretical and practical problems which are of importance in phase determination by direct methods. We have obtained a number of equations known as the formulae for space...

The crystal structure of 3,3′,3″……nitrilotris……propionamide (NTP) has been determined by direct methods. The crystal is trigonal, space group R3c, with hexagonal parameters a=b=11.306 and c=15.723 Each unit cell contains six molecules. Some important features of the crystal structure are discussed.In this paper we will discuss several theoretical and practical problems which are of importance in phase determination by direct methods. We have obtained a number of equations known as the formulae for space group R3c. These are etc.A new idea which we call PSTAN—1 has been introduced into the multisolution program of phase determination (MULTAN) and applied successfully to the crystal structure determination of NTP.

氮川丙酰胺的结构式为,简称NTP。它属于R3c空间群,取六方格子时,a=6=11.306,c=15.723,每个晶胞有六个分子。我们用直接法确定了它的晶体结构,讨论了分子之间的联系。 本文涉及到直接法测定相角的几个实际问题。我们推导出一系列R3c的∑_1公式:等等。我们也把简称为PSTAN—1算法引进多重解程序。上述这些已应用于NTP晶体结构的测定工作,看来是成功的。

This paper presents an ESR spectroscopy studied on free radicals and free electrons trapped in γ-irradiated NTP crystal.(1)The spectra of γ-irra-diated NTP polycrystal and singlecrystal were obtained and their simulated (model) spectra are suggested.It is preliminarily proposed that 18 hyperfine are caused by radicals trapped in γ-irradiated NTP crystal and that the "S" shaped symmetric spectrum is caused by free electros trapped in γ-irradiated NTP lattice dafect. (2)The decaycurves...

This paper presents an ESR spectroscopy studied on free radicals and free electrons trapped in γ-irradiated NTP crystal.(1)The spectra of γ-irra-diated NTP polycrystal and singlecrystal were obtained and their simulated (model) spectra are suggested.It is preliminarily proposed that 18 hyperfine are caused by radicals trapped in γ-irradiated NTP crystal and that the "S" shaped symmetric spectrum is caused by free electros trapped in γ-irradiated NTP lattice dafect. (2)The decaycurves of the signal intensity of γ-irradiated NTP polyorystal with inoreasingtemperature and at constanttmperature are given. It is found that the radicals trapped in γ-irradiated NTP crystal are stable below 100℃ which the free electrons trapped in γ-irradiated NTE lattice defects are stable below 150℃. When the temperature was near the melting point of NTP (186℃), the signal intensity decayed rapidly to zero. (3) It is considered that the signal intensity of the system resulted from the superposition of signal intensity of NTP radicals and free electrons trapped in the lattice defects.

本文对氮川丙酰胺(NTP)经~(63)Coγ射线辐照生成的自由基和陷落电子的电子自旋共振(ESR)波谱进行了研究。(1)提出了γ辐照NTP多晶、单晶的ESR谱及模拟谱。初步认为,分裂的18条谱线是γ辐照NTP自由基所引起,对称的“S”形谱线是γ辐照生成的陷落电子所引起。(2)给出了γ辐照NTP谱线强度的升温和恒温衰减曲线。发现NTP自由基在100℃以下温度稳定存在,自由电子在150℃以下温度稳定存在,当温度接近NTP熔点(186℃)时,ESR谱线强度快速衰减到零。(3)认为该谱是由NTP自由基和晶格缺陷中的陷落电子两部分谱线迭加而成。

The effects of harringtonine on nucleotide metabolism in Ehrlich ascites carcinoma cells have been studied. While the incorporation of ~3H-TdR into the acid-soluble fraction was enhanced, distinctly by harringtonine, the DNA synthesis was inhibited. The increase of ~3H-dTTP was most pronounced among the thymine nucleotides(dTMP,dTDPand dTTP). However, the incorporation of ~3H-TdR into each of these nucleotides in the acid soluble fraction was the same in the harringtonine-treated cancer cells as that in the...

The effects of harringtonine on nucleotide metabolism in Ehrlich ascites carcinoma cells have been studied. While the incorporation of ~3H-TdR into the acid-soluble fraction was enhanced, distinctly by harringtonine, the DNA synthesis was inhibited. The increase of ~3H-dTTP was most pronounced among the thymine nucleotides(dTMP,dTDPand dTTP). However, the incorporation of ~3H-TdR into each of these nucleotides in the acid soluble fraction was the same in the harringtonine-treated cancer cells as that in the control. This suggests that harringtonine might block the polymerization of dNTP into DNA, but without influence on the phosphorylation of TdR.It was also noted that harringtonine showed no significant effect on the incorporation of ~3H-UR and ~3H-HX into the nucleotide triphosphates and on RNA synthesis. These results together with the data of NTP and dNTP analysis shown by us previou sly suggest that the reduction of NDP seemed not to be inhibited, by the drug.

本文用标记核苷参入艾氏腹水癌细胞各成分以研究三尖杉酯碱对有关的核苷酸代谢的影响。结果表明,该药在抑制DNA合成的同时,使~3H-胸腺嘧啶核苷参入酸溶部分明显增加,其中以~3H-胸苷三磷酸的增加最为显著。~3H-胸苷-磷酸、~3H-胸苷二磷酸也有明显增加;但各胸腺嘧啶核苷酸占酸溶部分掺入的百分比与对照组相同。说明三尖杉酯碱不抑制胸腺嘧啶核苷的磷酸化,而抑制脱氧核苷三磷酸到DNA的聚合过程。在~3H-尿嘧啶核苷和~3H-次黄嘌呤参入实验中,三尖杉酯碱对四种~3H-核苷三磷酸及RNA的合成无明显影响。综合核苷三磷酸及脱氧核苷三磷酸的测定结果,表明该药似乎对核糖核苷二磷酸的还原无抑制作用。

 
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