[英文释义] The intercellular or intracellular transfer of information (biological activation/inhibition) through a signal pathway. In each signal transduction system,an activation/inhibition signal from a biologically active molecule (hormone,neurotransmitter) is mediated via the coupling of a receptor/enzyme to a second messenger system or to an ion channel. Signal transduction plays an important role in activating cellular functions,cell differentiation,and cell proliferation. Examples of signal transduction systems are the GAMMA-AMINOBUTYRIC ACID-postsynaptic receptor-calcium ion channel system,the receptor-mediated T-cell activation pathway,and the receptor-mediated activation of phospholipases. Those coupled to membrane depolarization or intracellular release of calcium include the receptor-mediated activation of cytotoxic functions in granulocytes and the synaptic potentiation of protein kinase activation. Some signal transduction pathways may be part of larger signal transduction pathways; for example,protein kinase activation is part of the platelet activation signal pathway.
signal transduction (信号传导):指受体和配体在细胞表面作用并传递引发细胞内途径信号的过程。; 第二十六章 信号的传输; 信号传递; 信号转导; 讯息传递
In eukaryotes, it is very clearly that map kinase ( mitogen-activated protein kinase ) signal transduction pathways are important routes for the channelling of extracellular stimuli to cytoplasm or nucleus 在真核生物中,map激酶信号转导途径是一种重要的传递外界刺激到细胞质或细胞核的方式。
By contrary, any obvious reactions were not observed in the group of transfected cos7 cells . we believed that no receptors or signal transduction pathway as closely related with prl or cg control in cos7 cells 在cos细胞,prl和hcg没有表现出明显的作用,推测与cos细胞膜表面缺乏相应的受体和胞内信号转导系统有关。
With ethylene receptor genes isolated from tomato, referring to the ethylene signal transduction pathway of arabidopsis, our research is focused on the functions of ethylene receptor genes in tomato 利用分离到的番茄乙烯受体基因,参考拟南芥乙烯信号转导模式,搞清楚番茄乙烯受体基因的功能,已成为我们研究的重点。
Comparing the difference in the modes of action between brassinolide and auxin, gibberellin, it has been proposed that the signal transduction pathway of br is different from those of other plant hormones 通过比较油菜素内酯与生长素、赤?素促进生长作用方式的异同,提出油菜素内酯促进生长的信号传导路径不同于其它植物激素。
H2o2 acts as signal molecular and intermediate in the downstream of aba or sa signal transduction pathway, which has recently emerged as a secondary messenger of stress signaling 另外,植物细胞内存在许多促分裂原活化蛋白激酶(mitogen-activatedproteinkinase,mapk),这些激酶在植物各种胁迫反应的信号转导过程中起着重要作用。
Effects of 50hz magnetic field on protein tyrosine phosphorylation in cultured cells protein cascade phosphorylation is one of the main modes of signal transduction pathway and protein activation in cells 4mt强度还可使617、105及112kda的蛋白质酪氨酸磷酸化发生改变,而0smt强度却使79、150kda的蛋白质酪氨酸磷酸化发生变化。
But the research of ethylene signal transduction pathway was started from 1990s . in arabidopsis, a model of the pathway as following has been proposed : c2h4-etr-ctr-ein2-ein3-ethylene responses 但对乙烯信号转导的研究却是从20世纪90年代开始的,在拟南芥中乙烯信号转导途径的模式是:c_2h_4etrctrein2ein3erf乙烯反应。
Above data support the hypothesis that h2o2 is involved in the signal transduction pathway of aba-induced stomatal closure . the nadph oxidase is likely involved in aba-induced stomatal guard cell movement in viciafaba 荧光光谱实验表明,在嗜中性白血球nadph氧化酶抑制剂dpi存在的条件下,与对照相比,大大逆转了由aba引起hpts的荧光强度下降。
Previous evidence showed that an increase in [ ca2 + ] cyt has been shown to be an early event in the aba signal transduction pathway, and ca2 + channels at the plasma membrane of stomatal guard cells are activated by hyperpolarization and aba assmann已提出较为完善的气孔保卫细胞信号转导模式,但是对于aba信号转导的一些中间环节仍是人们不断探讨的问题。
With the previous relative research, we suppose that there was a common signal transduction pathway between shear stress and lps . the inhibit effect of shear stress do not bring into play via increasing the level of bfgf 我们通过已有的相关研究推断,剪切力对lps诱导凋亡的抑制效应可能是由于剪切力与lps的信号传导中存在共同的通路,而不是由于剪切力诱导bfgf分泌抑制凋亡的。