CyclinEDestructionPathway
Cyclins are proteins that associate with cyclin-dependent protein kinases to regulate their activity and the progression of the cell cycle through specific checkpoints. Disruption of cyclin action can lead to either cell cycle arrest, or to uncontrolled cell cycle proliferation. The cyclical increase and decrease in cyclin levels is a key to cell cycle regulation. When cyclin E is abundant it interacts with the cell ......阅读全文
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
E2F1－Destruction－Pathway
E2F-1 is a transcription factor that regulates the expression of genes involved in the cell cycle and that is involved in progression of the cell cycl
Antisense－Pathway
About 8% of human genes have been estimated to carry out transcription from both DNA strands, resulting in significant level of endogenous antisense R
Complement－Pathway
The complement pathway consists of a series of over thirty proteins in plasma that are part of the immune response. Activation of the complement syste
Prion－Pathway
Transmissible spongiform encephalopathy (TSE) is thought to result from the structural conversion of cellular prion protein, PrP(C), into a misfolded
Fibrinolysis－Pathway
Clot formation and fibrinolysis is a balance of plasmin activation/inhibition and thrombin-thrombomodulin activity that regulates fibrin polymer forma
Glycolysis－Pathway
Glycolysis was one of the first metabolic pathways studied and is one of the best understood, in terms of the enzymes involved, their mechanisms of ac
Dicer－Pathway
The degradation of endogenous mRNA in a sequence-specific manner can be induced by dsRNA [RNA interfernce (RNAi)], antisense transcription, or viral i
动物所发现Cyclin－B2补偿Cyclin－B1调控减数分裂新机制
在哺乳动物中，卵母细胞被阻滞在第一次减数分裂前期长达几个月甚至几年，具体时间取决于不同的物种。完全发育的卵母细胞恢复减数分裂需要激活MPF因子（M期促进因子），而MPF是由Cyclin B1和CDK1（细胞周期依赖性激酶1）所组成的。长期以来，人们一直认为，Cyclin B1的合成和积累以及其与
Sonic－Hedgehog－(SHH)－Receptor－Ptc1－Regulates－cell－cycle
Sonic Hedgehog (Shh) is a secreted protein identified genetically as an important developmental factor. Shh provides a morphogenic signal in the devel
WNT－Signaling－Pathway
Wnt family members are secreted glycoproteins who bind to cell surface receptors such as Frizzled. Wnt members can play a role in the expression of ma
TPO－Signaling－Pathway
Thrombopoietin (TPO) binds to its receptor inducing aggregation and activation. TPO signals its growth regulating effects to the cell through several
Ceramide－Signaling－Pathway
Over 1,000 papers and reviews have been written about the role of ceramide in the production of programmed cell death or apoptosis. Ceramide is a sphi
AKT－Signaling－Pathway
Many cell-surface receptors induce production of second messengers like PIP3, phosphatidylinositol 3,4,5-trisphosphate, that convey signals to the cyt
EGF－Signaling－Pathway
The epidermal growth factor (EGF) peptide induces cellular proliferation through the EGF receptor, which has a tyrosine kinase cytoplasmic domain, a s
EPO－Signaling－Pathway
Erythropoietin functions to increase the number of red blood cells. Thus, it has found utility as a drug for those needing to replenish erythrocytes f
Reelin－Signaling－Pathway
Reelin is an extracellular protein secreted by neurons. Reeler mice with a defective Reelin gene exhibit neuronal abnormalities in development. Mice t
Insulin－Signaling－Pathway
The appropriate signaling through the insulin pathway is critical for the regulation of glucose levels and the avoidance of diabetes. Insulin forms a
MAPKinase－Signaling－Pathway
The ever evolving mitogen-activated protein kinase (MAP kinase) pathways consist of four major groupings and numerous related proteins which constitut
PDGF－Signaling－Pathway
Platelet Derived Growth Factor (PDGF) plays a critical role in cellular proliferation and development. The biologically active form is a dimer formed
Phosphatidylcholine－Biosynthesis－Pathway
The main components of biological membranes are phosphoglyceride lipids composed of a glycerol unit esterified to two fatty acids and a polar alcohol
Classical－Complement－Pathway
The complement system is part of the defense against invading cells and is composed of about twenty different proteins found in the plasma. When activ
Erythrocyte－Differentiation－Pathway
Stem cells in the bone marrow produce a variety of hematopoietic cell types from common progenitor cells under the influence of cytokines and growth f
mTOR－Signaling－Pathway
mTOR (mammalian target of rapamycin) appears to play a central role in signaling caused by nutrients and mitogens such as growth factors to regulate t
Ras－Signaling－Pathway
Ras activates many signaling cascades. Here we illustrate some of the well-characterized cascades in a generic compilation of effector molecules. The
Alternative－Complement－Pathway
The complement system of plasma proteins is an important part of the immune system that forms a cascade of factors that lyses foreign cells. There are
Integrin－Signaling－Pathway
Integrins are cell surface receptors that interact with the extracellular matrix and mediate intracellular signals in response to the extracellular ma
ATM－Signaling－Pathway
The ataxia telangiectasia-mutated gene (ATM) encodes a protein kinase that acts as a tumor suppressor. ATM activation by ionizing radiation damage to
BCR－Signaling－Pathway
Significant progress has been made towards delineation of the intrinsic molecular processes that regulate B lymphocyte immune function. Recent observa
Alphasynuclein－and－Parkinmediated－proteolysis－in－Parkinsons－disease
The motor defects of Parkinson's disease are related to the loss of dopaminergic neurons in specific brain regions. Examination of these neurons i