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酶相互作用
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  “酶相互作用”译为未确定词的双语例句
     The structure-activities relationships were discussed,and the models of compounds binding with target enzyme were presumed.
     并推测了该类化合物与底物酶相互作用时可能模式和酶可能存在的与配体结合区域。
短句来源
     Moreover. The interaction of Co(Ⅱ)(His) n with Cu 2Zn 2SOD is stronger and quicker,than that of CoCl 2 with this enzyme,as well as the Co(Ⅱ) from Co(Ⅱ)(His) n is easier to enter the active center of enzyme.
     还发现Co(Ⅱ)(His)n比CoCl2与酶相互作用更强、更快,Co(Ⅱ)(His)n中的Co(Ⅱ)更易进入酶中,更影响了酶的催化活性。
短句来源
     Some Band 3 mutations in the erythrocytes, especially in cdb3, destabilize erythrocyte membranes, leading to hereditary spherocytosis (HS).
     3.与糖酵解酶相互作用,并调控它们的活性,主要包括醛缩酶、3-磷酸甘油醛脱氢酶和6-磷酸果糖激酶;
短句来源
     These results suggest that barley based diet added enzyme preparation can affect the enzyme activities of pancreatic juice and duodenal chyme,so that to improve the digestive function of geese.
     外源酶与内源酶相互作用 ,共同影响十二指肠食糜的酶活性 ,协调化学性消化机能 ,以利于提高机体对饲料转化效率
短句来源
     The mechanisms of action of phytoestrogen from food sources had been reviewed, such as estrogen - receptor related actions which are mainly represented as estrogen effects,actions with major enzymes of some synthetical sterols, and other non - estrogen action.
     综述了植物雌激素(包括大豆异黄酮、木酚素以及二苯乙烯)的作用机制:(1)雌激素受体(ER)相关作用,主要表现为雌激素或抗雌激素效果; (2)与一些合成性类甾醇的主要酶相互作用(间接显示雌激素活性);
短句来源
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  相似匹配句对
     THE STUDY ON THE INTERACTION BETWEEN L-ASPARAGINASE AND THE PRODUCT
     L-天冬酰胺与产物的相互作用
短句来源
     2.the mechnisms of interaction;
     相互作用的机制;
短句来源
     Interaction of antimatters
     反物质的相互作用
短句来源
     Effects of Cells Interaction on Matrix Metalloproteinase-1 Production
     细胞的相互作用对基质金属蛋白-1的影响
短句来源
     Enzyme mimics
     模型
短句来源
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  interaction of enzyme
The micellar effects are accounted for in terms of the Berezin pseudo-phase model of micellar catalysis applied to the interaction of enzyme with organometallic substrates.
      
The fluorescence changes which occur upon the interaction of enzyme and substrate under stopped-flow conditions can provide a sensitive means to directly observe ES complexes.
      
27Al NMR studies revealed the different nature of interaction of enzyme with the support for both immobilization techniques.
      
To study the interaction of enzyme with lysophos phatidylcholine appropriate amounts of each were mixed on ice.
      


The near ultraviolet CD spectra of PEP carboxylase from sorghum leaves were studied in the presence of various ligands, The free enzyme shows a spectrum with a negative CD peak at 275 nm and two shoulder at 268nm and 295nm. The spectrum of enzyme-PEP complex indicates Changes in the asymmetric microenvironments of Phe and Tyr residues. Mg~(++) binding to the enzyme giyes rise to changes in the CD absorption of Tyr residues in the enzyme moleeuies (see Fig. 1). Combined addition of PEP and Mg~(++) to the enzyme...

The near ultraviolet CD spectra of PEP carboxylase from sorghum leaves were studied in the presence of various ligands, The free enzyme shows a spectrum with a negative CD peak at 275 nm and two shoulder at 268nm and 295nm. The spectrum of enzyme-PEP complex indicates Changes in the asymmetric microenvironments of Phe and Tyr residues. Mg~(++) binding to the enzyme giyes rise to changes in the CD absorption of Tyr residues in the enzyme moleeuies (see Fig. 1). Combined addition of PEP and Mg~(++) to the enzyme solution produces profound effect on the enzyme CD spectrum. Compared with the CD spectrum of free enzyme, the presence of PEP-Mg~(++) complex causes a blue shift in the negative CD peak (from 275nm to 272nm) and appearance of a new shoulder at 285nm (see Fig.2).Effectors G6P and Gly cause very different changes in the spectrum of the enzyme (see Fig.3). Gly exerts effect on the enzyme CD spectrum mainly in the region of Tyr absorption, while the binding of G6P to the enzyme gives rise to vigorous changes in the microenvironments of the three aromatic residues.All these results proved that the molecule of PEP carboxylase is highly flexible and that multiple conformational states of the enzyme can be induced by interaction with substrate, Mg~(++), effectors, etc. The flexibility could explain the obvious. differences in catalytic activity, regulatory properties and stability of the enzyme in the presence of various ligands.

用近紫外CD光谱技术追踪了PEP羧化酶与各种配基的相互作用。底物PEP、必需金属离子Mg~(++)、PEP-Mg~(++)以及效应剂G6P、Gly、G6P-Gly,均可引起高粱叶片PEP羧化酶近紫外CD光谱各不相同的变化。这表明高粱叶片PEP羧化酶分子构象有较大的灵活性,不同的配基与酶相互作用可引起酶分子不同的构象变化,因而使酶分子表现出催化功能、调节特性、必需氨基酸残基的化学反应性以及稳定性诸方面的差异。

Tetrandrinum(Tet),a main effective component of a Chinese medicinal herb-Radix

汉防己的有效成份汉防己甲素(Tet)在较低浓度时能抑制钙调蛋白(CaM)依赖性环核苷酸磷酸二酶(PDE)的活性(IC_(50)=43μmol/L),并且这种抑制能被 CaM 所对抗;而在较高浓度(>300μmol/L)时,无论有无 Ca~(2+)和 CaM 的存在,Tet 均能非 Ca~(2+)依赖性激活 PDE,这种激活不受 CaM 拮抗剂三氟拉嗪和氯丙嗪的影响。结果提示,Tet 既具有抗 CaM 作用,又能在较高浓度时直接与 PDE 相互作用而部分模拟CaM 的作用,这可能均与 Tet 的水、脂两性分子特性有关。该实验为阐明中药的作用机理及 CaM 与其靶酶相互作用的研究提供了新线索。

The interaction between the fluorescence polar probe bis- (8-anilinonaph-thalene-1-sulfonate) (bis-ANS) and triosephosphate isomerase from yeast (TIM) was described in this paper. The biphasic quenching of the TIM intrinsic fluorescence caused by the radia tionless energy transfer from tryptophane residues in TIM to bonnd bis-ANS, indicated the presence of two types of bis-ANS binding site in TIM molecule. The estimated dissociation constant, Kd , are 3.3 μM and 17.0 μM respectively. The presence of TIM substrate...

The interaction between the fluorescence polar probe bis- (8-anilinonaph-thalene-1-sulfonate) (bis-ANS) and triosephosphate isomerase from yeast (TIM) was described in this paper. The biphasic quenching of the TIM intrinsic fluorescence caused by the radia tionless energy transfer from tryptophane residues in TIM to bonnd bis-ANS, indicated the presence of two types of bis-ANS binding site in TIM molecule. The estimated dissociation constant, Kd , are 3.3 μM and 17.0 μM respectively. The presence of TIM substrate D-gly-ceraldehyde-3 phosphate (GDP) causes the increase in the fluorescence intensity of bound bis-ANS, which implies that GDP can effect the conformation of the bis-ANS binding site in TIM. The dependence of depolarization of bound bis-ANS on the bis-ANS concentration in solution indicates that the energy transfer between the Lound bis-ANSs in TIM occurs. The increase in fluorescence intensity and the blue shift of fluorescence spectrum of bound bis-ANS caused by high hydrostatic pressure indicate that the conformational drift takes place during the dissociation of TIM into monomer.

研究了极性荧光探针Bis-ANS和磷酸丙糖异构酶的相互作用。我们发现由磷酸丙糖异构酶(TIM)中Trp残基和结合在TIM分子上的Bis-ANS之间的能量传递引起的Trp残基荧光的淬灭呈双相性,表明Bis-ANS在TIM分子上可能有2个不相同的结合位点,其结合的解离平衡常数Kd分别为3.3μM和17.0μM。底物GDP引起已结合的Bis-ANS荧光强度进一步增强和荧光谱的蓝移说明GDP可影响Bis-ANS在TIM分子上结合部位的构象,使其疏水性增强。我们还观察到由于结合在同一TIM分子上的Bis-ANS之间的能量传递引起的退偏振,进一步证明Bis-ANS有2个结合部位在1—2800bar压力范围里,增高压力引起结合在TIM分子上的Bis-ANS荧光进一步增强和光谱蓝移,说明TIM在压力下解离成亚基的过程中发生了Weber提出的"conformationaldrift。

 
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