transcriptional

与transcriptional相关的网络例句 [注：此内容来源于网络，仅供参考]

Transcriptional activity of ACL recombinants normalized by Renilla was significant difference with pGL3-Basic expect for construct -27 and -15 (P＜0.01). Construct -919 contains highest activity. 3 times reduction of transcriptional activity from-919 to -679bp indicated that negative regulation factors located probably in this region. The activity started on construct -73 suggested the basal promoter activity was located within the -73 to +77bp region; Transcriptional activity of IDHβrecombinants was not significantly different between the recombinant -58 and pGL3-Basic. The activity started on construct -82, decreasing with the length of the fragment up to -164 in despite of a bit of fluctuation, and kept increasing from construct -164 up to -279. Thus, the basal promoter activity was located within the -82 to +16bp region, whereas the upstream 197bp conferred maximal transcriptional activity.

采用5'端缺失策略，结合启动子预测结果，分别构建了8个ACL基因和19个IDH3β基因启动子区重组子，将其转染猪PK15细胞系，并利用荧光素酶双报告基因系统检测了它们的活性，结果表明：在所构建的猪ACL基因5侧翼序列的8个重组子中，除pGL-ACL27和pGL-ACL15外，其它重组子的荧光素酶活性与阴性对照均达到极显著水平(P＜0.01)，表明它们均具有启动子活性，pGL-ACL919活性最强，到pGL-ACL679活性下降了将近3倍，说明从-919bp到-679bp区域可能存在负的调控位点，从pGL-ACL621到pGL-ACL73活性有小幅度下降，到pGL-ACL27活性降到与阴性对照水平无显著差异，表明维持该启动子的基本活性区域位于-73bp到+77bp之间；IDH3β基因启动子活性开始于pGL-IB82，然后虽然有些波动，但是活性一直下降直到-164bp处，之后活性又开始升高，直到-279bp处活性达到最高，这些表明维持该启动子的基本活性区域位于-82bp到+16bp之间，从-82到-279之间的179bp区域具有最高的启动子活性。

PIAS proteins play roles mainly through two mechanisms: acting as SUMO E3 ligases to promote modifications of some transcriptional factors and cofactors, especially sumoylation, and to regulate their transcriptional activation; acting as structural proteins to offer platforms for protein-protein interactions and to promote the abstraction and recruitment of other regulators in the cellular signal pathway complexes or gene transcriptional complexes, companied by the subnuclear location of target proteins.

PIAS蛋白的调控机制主要有两种：一种是通过其自身所具有的SUMO(small ubiquitin-related modifiers)E3连接酶活性，促进对一些转录因子、转录辅因子的化学修饰，尤其是SUMO化修饰，从而调控它们的转录活性；另一种是作为构架蛋白，为蛋白质之间的相互作用提供平台，促进细胞信号通路复合物或基因转录复合物中其它调节蛋白的去除和募集，并涉及到靶蛋白的亚核定位。

NodD binds to and bends target promoters through anchoring two tandem and individual specific DNA sites. NodD functions as a tetramer, which has a V-shaped main body. Tetrameric NodD is to change its own conformation rather than its oligomeric forms in response to small signal molecules. The specific interaction between each NodD DNA-binding domain and each specific DNA site does not alter itself in spite of naringenin induction, and the induced conformational change is transferred from protein to DNA. Only the DNA conformation incited by induced NodD is competent for RNA polymerase to form the transcriptional open complex. It cannot be excluded that NodD may have protein-to-protein contacts with RNA polymerase, and that the NodD conformational change may also directly contribute to the transcriptional open complex formation. However, the NodD conformational change itself cannot serve as the determinant of the transcriptional molecular switch.

通过研究，我们提出了初步的NodD操纵子激活模型：第一，四聚体是NodD蛋白的功能单位，它通过铆钉两个串联的相对独立的DNA靶位点结合被诱导的启动子；第二，小分子配基的结合是改变NodD四聚体的构象而不是引发不同形式的寡聚体，在我们的模型中，NodD四聚体缩小其V形主体的弯折角，进而缩短其DNA结合功能域的间距；第三，小分子信号的诱导并没有改变NodD的DNA结合域和其DNA靶位点的相互作用，NodD的构象改变由蛋白质经其双铆钉位点传递给DNA；第四，只有诱导状态的NodD激发的DNA构象才能有效地使RNA聚合酶形成转录开放复合物；第五，不排除NodD与RNA聚合酶可能有直接的相互接触位点，不排除NodD构象的改变可能直接有利于RNA聚合酶形成转录开放复合物，但是我们认为NodD构象改变本身不是充当转录激活开关的决定因素。

与transcriptional相关的网络解释 [注：此内容来源于网络，仅供参考]

Transcriptional Silencing：转录沉默

Tight Junctions緊密連接 | Transcriptional Silencing轉錄沉默 | Tubulin and its Isoforms微管蛋白及其異形

Transcriptional Silencing：靜止轉錄

transcription regulator 轉錄調整物 | transcriptional silencing 靜止轉錄 | translation triggering 觸發轉譯

transcriptional control：转录调控

在真核细胞内的基因表现是经由一连串复杂的调控机制来完成,在细胞核内主要的控制机制是转录调控 (transcriptional control) 和讯息核醣核酸合成调控 (mRNA processing control) ,当讯息核醣核酸 (mRNA) 合成后就会经由调控某些蛋白质运送到细胞质或特定的区域来进行蛋白合成,

transcriptional control：转录控制

transcription unit 转录单位 | transcriptional control 转录控制 | transcriptional elongation 转录伸长

transcriptional control：转录控制,转录调控

transcriptional attenuator 转录弱化子 | transcriptional control 转录控制,转录调控 | transcriptional coactivator 转录辅激活物,转录辅激活因子,转录辅激活蛋白