查询词典 actin

In vitro studies demonstrated that the function of actin is regulated by many actin-binding proteins in animal and yeast.

但是，对植物肌动蛋白骨架的直接功能的研究还很少。

In this thesis, we studied the effects of nuclear actin on gene transcription regulation, with a special focus on the relations between the nuclear actin and RNA polymerase II in concanavalin A-stimulated lymphocytes and HeLa cells.

本文以ConA激活的淋巴细胞和HeLa细胞为实验材料，从不同角度研究了细胞核肌动蛋白与RNA聚合酶Ⅱ相互作用，并对细胞核肌动蛋白参与RNA聚合酶Ⅱ的作用机制进行了探讨。

Sequence analysis reveals the identity rate of β-actin cDNA nucleotide sequence between the rice field eel and Tilapiamossambica, Salmo salar, Oryzias latipes, Oncorhynchus mykiss, Danio rerio, Carassius auratus, Physalaemus pustulosus, Bos taurus, Gall us gallus, Mus musculus, Hoino sapiens are 68%~95%; and the similarity of 3-actin amino acid sequence is 97%~100%.

将所得序列与各科鱼、蛙、鸡、牛、鼠、人等的β-肌动蛋白基因序列同源性分析显示，核苷酸序列具有68%~95%的相似性，氨基酸序列具有97%~100%相似性，显示该基因在生物进化过程中的保守；系统发育分析表明黄鳝β-肌动蛋白基因与罗非鱼的亲缘关系最近。

After developing 48 hours, hepatocytes enters 2.0 mM t-butyl hydroperxide or 2.0 mM diamide to induced cell blebbing. The samples collected at 0, 15, 30, 60 minutes to analyze cell about membrane protein thiol deletion; the leakage of lactate dehydrodenase; the change of glutathione; the lipid peroxidation; the variation of actin and tubulin, and use Confocal fluorescent microscope to observe the change of actin and tubulin in rat hepatocytes.

肝细胞在48小时培养后，分别加入2.0mM t-buty1 hydroperoxide或2.0 mM diamide诱发细胞膜小泡生成，并分别於0、15、30、60分钟取样，分析细胞膜硫醇流失程度；乳酸去氢□渗漏；□胱甘□浓度变化；脂质过氧化；肌动蛋白与管蛋白变化；并利用雷射共轭焦萤光显微镜观察肝细胞中肌动蛋白及管蛋白的变化。

The result indicates the t-BHP or diamide both cause the mass loss about the membrane protein thiol in hepatocytes, the fast oxidization about glutathione in hepatocytes, the leakage of lactate dehydrodenase, but the level of t-BHP is larger than of diamide. In the aspect of lipid peroxidation, only the t-BHP produces apparent change. As to actin and tubulin, they both find fall-off and present time-dependency effects. The result in Confocal fluorescent microscope also show these two cytoskeletal proteins are related to cell blebbing, but they don''t play the same role during the porcess. Tubulin may be more important than actin. If the study predispose dithiothreitol before adding t-BHP or diamide, then the damage by the diamide is repressed, but just partly protection for the damage by t-BHP.

结果显示t-BHP或diamide均可造成细胞膜蛋白硫醇大量流失与胞内GSH快速氧化，亦显著导致乳酸去氢□渗漏，但t-BHP诱发的渗漏程度大於diamide；在脂质过氧化方面，则仅t-BHP处理组产生明显的脂质氧化情形；至於肌动蛋白与管蛋白单体均可见减少且呈现时间依赖效应；在雷射共轭焦萤光显微镜观察中，亦显现这两种架构蛋白与细胞膜起泡有关，但两者在小泡生成的过程中扮演的角色并不完成相同，可能管蛋白较肌动蛋白重要；如果细胞在t-BHP或diamide加入前预先以dithiothreitol处理，则diamide 所造成的伤害显著的受到抑制，但DTT对t-BHP所诱发的伤害则仅有部分保护效果。

Results: MC of tryptase immunoreactivity contain abundant F-actin ring that region of cytomembrane endothecium form a barrier of blocking tryptase liberation. Copious tryptase temporarily was stored in secretory vacuole, and small amounts tryptase was released from secretory vacuole for depolymerize of F-actin ring in cell.

结果：类胰蛋白酶免疫反应性的肥大细胞内含有丰富的丝状肌动蛋白环，在质膜内层区域形成阻碍类胰蛋白酶释放的屏障；大量的类胰蛋白酶暂存于分泌泡中，少量的类胰蛋白酶因细胞内丝状肌动蛋白环的解聚使之从分泌泡中释放。

Results: MC of tryptase immunoreactivity MC(subscript T contain abundant F-actin ring that region of cytomembrane endothecium form a barrier of blocking tryptase liberation. Copious tryptase was temporarily stored in secretory vacuole, and small amounts of tryptase was released from secretory vacuole for depolymerize of F-actin ring in cell.

结果：类胰蛋白酶免疫反应性的肥大细胞内含有丰富的丝状肌动蛋白环，在质膜内层区域形成阻碍类胰蛋白酶释放的屏障；大量的类胰蛋白酶暂存于分泌泡中，少量的类胰蛋白酶因细胞内丝状肌动蛋白环的解聚使之从分泌泡中释放。

The amount of vimentin IF per cell was higher than those of tubulin and F-actin at 12-24h of culture, but it broken down and decreased steadily when the cells became differentiated into late erythroblast at 36-48h of culture, thus facilitated the eccentric nucleation which we regard it as the initial step of denucleation. Both of the fluorescence intensity of tubulin and actin exhibited a significant rise and aggregated between the extruding nucleus and incipient reticulocyte before and during denucleation, and finally play a role in the commitent to ennucleation, the second phase of denucleation.

在培养24小时前，每个细胞中波形纤维含量均高于同期微丝和微管蛋白含量，但在培养24-36小时的晚幼红细胞阶段，波形纤维蛋白降减和解聚，为核偏位创造了条件，这是排核的第一阶段，而随后微丝和微管蛋白的荧光染色强度则有所增加，并逐渐聚集在外排中的核与预期形成网织红细胞之间的缢痕区，在将细胞核排出的排核第二阶段起主要作用。

In chapter two, the structures of myosin and actin, the mechanochemical actin-actived myosin ATPase cycle are introduced.

第三章主要介绍肌肉收缩的一些实验结果和已有的理论模型。

The establishment and maintenance of microvilli are dependent on the integrity of the actin cytoskeleton because actin polymerizes to form the actin cytoskeleton in the corn of microvilli in renal epithelial cells.

肾脏的重吸收功能主要是通过肾脏上皮细胞内的微绒毛这一重要结构而实现的。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。