CDKRegulationofDNAReplication
Initiation of DNA replication in eukaryotes is a highly conserved, multi-step process (replication licensing) designed to restrict initiation events to once per replication origin per S phase. Its control has been uncovered by the discovery of the cyclin dependent kinases (CDKs) as master regulators of the cell cycle and the initiator proteins of DNA replication, such as the Origin Recognition Complex (ORC), Cdc6/18,......阅读全文
与肺癌相关的DNMT1基因编码功能描述
这个基因编码一种将甲基转移到基因组DNA的胞嘧啶核苷酸的酶。这种蛋白是在DNA复制后维持甲基化模式的主要酶，并表现出对半甲基化DNA的偏好。DNA甲基化是哺乳动物表观遗传基因调控的重要组成部分。异常甲基化模式在人类肿瘤中发现并与发育异常有关。这种基因的变异与小脑共济失调、耳聋和嗜睡、神经病变、遗传感
与胃癌相关的DNMT1基因编码功能描述
这个基因编码一种将甲基转移到基因组DNA的胞嘧啶核苷酸的酶。这种蛋白是在DNA复制后维持甲基化模式的主要酶，并表现出对半甲基化DNA的偏好。DNA甲基化是哺乳动物表观遗传基因调控的重要组成部分。异常甲基化模式在人类肿瘤中发现并与发育异常有关。这种基因的变异与小脑共济失调、耳聋和嗜睡、神经病变、遗传感
DNMT1基因突变与药物因子介绍
这个基因编码一种将甲基转移到基因组DNA的胞嘧啶核苷酸的酶。这种蛋白是在DNA复制后维持甲基化模式的主要酶，并表现出对半甲基化DNA的偏好。DNA甲基化是哺乳动物表观遗传基因调控的重要组成部分。异常甲基化模式在人类肿瘤中发现并与发育异常有关。这种基因的变异与小脑共济失调、耳聋和嗜睡、神经病变、遗传感
Ghrelin:－Regulation－of－Food－Intake－and－Energy－Homeostasis
The somatotropic axis. The synthesis and release of growth hormone (GH) from the pituitary are controlled by the hypothalamic hormones GH-releasing ho
Transcription－Regulation－by－Methyltransferase－of－CARM1
Several forms of post-translational modification regulate protein activities. Recently, protein methylation by CARM1 (coactivator-associated arginine
Signal－Dependent－Regulation－of－Myogenesis－by－Corepressor－MITR
The differentiation of muscle cells is regulated by many factors, including the MyoD/MEF2 family of transcription factors. The MyoD/MEF2 dimer binds t
CARM1－and－Regulation－of－the－Estrogen－Receptor
Several forms of post-translational modification regulate protein activities. Recently, protein methylation by CARM1 (coactivator-associated arginine
Regulation－of－Splicing－through－Sam68
While transcriptional regulation is often viewed as the most prevalent way extracellular signals to regulate gene expression, post-transcriptional reg
Role－of－nicotinic－acetylcholine－receptors－in－the－regulation－of－apoptosis
Nicotinic acetylcholine receptors are essential for neuromuscular signaling and are also expressed in non-neuronal tissues, where their function is le
BTG－family－proteins－and－cell－cycle－regulation
BTG2 is found to be one of the immediate early genes up-regulated by neural growth factor (NGF) and epidermal growth factor (EGF). Its transcriptional
Regulation－of－cell－cycle－progression－by－Plk3
The focus of this pathway is to illustrate the role of Polo-like Kinase 3 (Plk3 also known as Prk and Fnk) as part of the regulatory cascade leading t
Overview－of－telomerase－RNA－component－gene－hTerc－Transcriptional－Regulation
Telomerase is an enzyme which replicates the terminal sequences of eukaryotic chromosomes, namely the telomeres. Cells which have an unlimited replica
Regulation－of－MAP－Kinase－Pathways－Through－Dual－Specificity－Phosphatases
Mitogen-activated protein (MAP) kinases are important players in signal transduction pathways activated by a range of stimuli and mediate a number of
Multistep－Regulation－of－Transcription－by－Pitx2
Many transcription factors play essential roles in normal development by determining the proliferation and differentiation of cells. The coordinated t
Mechanism－of－Gene－Regulation－by－Peroxisome－Proliferators－via－PPARa(alpha)
The most recognized mechanism by which peroxisome proliferators regulated gene expresssion is through a PPAR/RXR heterodimeric complex binding to a pe
Deregulation－of－CDK5－in－Alzheimers－Disease
Cyclin-dependent kinase 5 (cdk5), a multi-functional kinase, and its neuron-specific activator p35 are required for neurite outgrowth and cortical lam
Regulation－of－p27－Phosphorylation－during－Cell－Cycle－Progression
p27/Kip1 regulates the cell cycle by inhibiting the checkpoint kinase cdk2/cyclin E and blocking cell cycle progression through the G1-S transition. C
Cyclin－E－Destruction－Pathway
Cyclins are proteins that associate with cyclin-dependent protein kinases to regulate their activity and the progression of the cell cycle through spe
AKAP95－role－in－mitosis－and－chromosome－dynamics
The chromatin packaging of the genome is dynamic, changing with the cell cycle and with transcriptional regulation. During mitosis, chromatin is conde
DDX3X基因突变与药物因子介绍
该基因编码的蛋白是由保守的asp-glu-ala-asp（dead）基序决定的大死亡盒蛋白家族成员，具有atp依赖的rna螺旋酶活性。据报道，这种蛋白具有高水平的rna非依赖性atp酶活性，与大多数死盒螺旋酶不同，atp酶活性被认为是由rna和dna共同刺激的。这种蛋白质具有多个保守结构域，被认为在
DDX3X基因编码功能及结构描述
该基因编码的蛋白是由保守的asp-glu-ala-asp（dead）基序决定的大死亡盒蛋白家族成员，具有atp依赖的rna螺旋酶活性。据报道，这种蛋白具有高水平的rna非依赖性atp酶活性，与大多数死盒螺旋酶不同，atp酶活性被认为是由rna和dna共同刺激的。这种蛋白质具有多个保守结构域，被认为在
低副作用乳腺癌药物有望用于急性髓系白血病的治疗
近日，英国纽卡斯尔大学的研究人员在Cancer Cell发表了题为“The Oncogenic Transcription Factor RUNX1/ETO Corrupts Cell Cycle Regulation to Drive Leukemic Transformation”的文章，通
低副作用乳腺癌药物有望用于急性髓系白血病的治疗
近日，英国纽卡斯尔大学的研究人员在Cancer Cell发表了题为“The Oncogenic Transcription Factor RUNX1/ETO Corrupts Cell Cycle Regulation to Drive Leukemic Transformation”的文章，
Nature子刊|香港大学翟元樑团队DNA复制最新见解
在真核生物中，起源识别复合体(ORC)促进了复制前复合体(pre-RC)在起源DNA上的组装，以获得复制许可。2024年9月13日，香港大学翟元樑作为通讯作者在Nature Communications在线发表题为“Replication licensing regulated by a sho
mCalpain－and－friends－in－Cell－motility
The mammalian calpain gene family currently contains 13 distinct large subunit products most of which complex with one of two smaller 30kDa subunits.
CDK1基因的结构和作用
细胞周期蛋白依赖性激酶2，也称为细胞分裂蛋白激酶2，是人类中由CDK2基因编码的酶。 由该基因编码的蛋白质是Ser / Thr蛋白激酶的细胞周期蛋白依赖性激酶家族的成员。该蛋白激酶与酿酒酵母cdc28和粟酒裂殖酵母cdc2的基因产物高度相似，在人类中也称为Cdk1。它是细胞周期蛋白依赖性激酶复合物的
CDK9基因的结构和作用
该基因编码的蛋白是细胞周期蛋白依赖性蛋白激酶（CDK）家族的成员。cdk家族成员与酿酒酵母cdc28和pombe cdc2的基因产物非常相似，被称为重要的细胞周期调节器。这种激酶被发现是多蛋白复合物tak/p-tefb的一个组成部分，它是RNA聚合酶Ⅱ定向转录的延伸因子，通过磷酸化RNA聚合酶Ⅱ最大
细胞周期蛋白和CDK的作用
两类关键调控分子，周期素(Cyclin)和细胞周期蛋白依赖性激酶（CDKs）决定细胞在细胞周期中的进展。2001年诺贝尔生理暨医学奖颁给利兰·哈特韦尔(Leland H. Hartwell)、蒂姆·亨特(R. Timothy (Tim) Hunt)、和保罗·纳斯(Paul M. Nurse)等三人，
细胞化学词汇复制泡
中文名称：复制泡外文名称：replication bubble定义：复制泡replication bubble这是DNA双向复制的方式。在复制启动时,尚未解开螺旋的亲代双链DNA同新合成的两条子代双链DNA的交界处,就称为复制叉(replication fork)。
RPA4基因编码的功能和结构描述
这个基因编码一个单链dna结合蛋白，它是复制蛋白a复合物的30kda亚单位。复制蛋白a是dna双链断裂修复和细胞周期检测点激活的重要因子。编码蛋白定位于DNA修复灶，可能参与细胞DNA损伤反应这种蛋白质也可能在抑制病毒复制方面发挥作用。This gene encodes a single-stran