PhosphorylationofMEK1bycdk5／p35downregulatestheMAPkinasepathway
Map kinases transduce responses to extracellular signals by a variety of routes, and communicate with other pathways through extensive crosstalk networks. A closely studied Map kinase cascade originates with tyrosine kinase activation, and activation of Ras. Ras activates Raf, Raf activates the Map kinase kinases Mek1 and Mek2 and these kinases activate downstream Map kinases like Erk1 and Erk2. Erk1 and Erk2 in turn......阅读全文
Phosphorylation－of－MEK1－by－cdk5/p35－down－regulates－the－MAP－kinase－pathway
Map kinases transduce responses to extracellular signals by a variety of routes, and communicate with other pathways through extensive crosstalk netwo
Growth－Hormone－Signaling－Pathway
Growth hormone plays a major role in regulating growth during childhood and adolescence and also regulates metabolism. Defects in growth hormone signa
PTEN－dependent－cell－cycle－arrest－and－apoptosis
PTEN is a tumor suppressor gene. Recombinant PTEN is capable of dephosphorylating phosphatidylinositol 3,4,5-triphosphate[PI(3,4,5)P3], the product of
Sprouty－regulation－of－tyrosine－kinase－signals
Four different members of the Sprouty protein family block the cellular proliferation and differentiation induced by several different growth factors,
Human－Cytomegalovirus－and－Map－Kinase－Pathways
To replicate in the host cell, viruses commandeer cellular signaling pathways. Cytomegalovirus (CMV) is a DNA virus with that is widespread in the pop
Map－Kinase－Inactivation－of－SMRT－Corepressor
Corepressors are coregulators that interact with transcriptional silencers in a variety of pathways such as cell proliferation, differentiation and ap
Activation－of－Csk－by－cAMPdependent－Protein－Kinase－Inhibits－Signaling
Interaction of T cell receptor with specific antigen in the context of MHC II activates a signal transduction pathway that leads to T cell activation.
Keratinocyte－Differentiation
The epidermis, which provides a protective barrier that undergoes a constant renewal, is a multi-layered tissue with the proliferating cells located i
Melanocyte－Development－and－Pigmentation－Pathway
Studies with homozygous knockout mice have suggested that stem cell factor (SCF or KITLG), c-Kit, microphthalmia (Mitf), and B-cell CLL/lymphoma 2 (Bc
Erk1/Erk2－Mapk－Signaling－pathway
The p44/42 MAP Kinase pathway consists of a protein kinase cascade linking growth and differentiation signals with transcription in the nucleus. Growt
MAPKinase－Signaling－Pathway
The ever evolving mitogen-activated protein kinase (MAP kinase) pathways consist of four major groupings and numerous related proteins which constitut
TGF－beta－signaling－pathway
TGF-beta regulates growth and proliferation of cells, blocking growth of many cell types. The TGF-beta receptor includes type 1 and type 2 subunits th
Thrombin－signaling－and－proteaseactivated－receptors
Thrombin is an extracellular protease that is involved in the clotting of blood and inflammation through its action on platelets and endothelial cells
Stress－Induction－of－HSP－Regulation
Mammalian cells can respond to a variety of stresses such as heat, cold, oxidative stress, metabolic disturbance, and environmental toxins through nec
Erk－and－PI3－Kinase－Are－Necessary－for－Collagen－Binding－in－Corneal－Epithelia
Activation of the MAPK kinase pathway has been identified as a mechanism that integrins use to regulate gene expression leading to cell shape changes
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
Control－of－skeletal－myogenesis－by－HDAC－calcium/calmodulindependent－kinase
The differentiation of muscle cells is transcriptionally regulated, in part by the myocyte enhancer factor-2, MEF2. During myogenesis MEF2 binds to My
Inactivation－of－Gsk3－by－AKT－causes－accumulation－of－bcatenin
Lipopolysaccharide (LPS) from XX bacteria induces a wide range of inflammatory responses, including the response of alveolar macrophages to bacteria i
Protein－Kinase－A－at－the－Centrosome
Protein kinase A regulatory subunit RIIalpha (PKA-RIIa) is tightly bound to centrosomal structures during interphase through interaction with the A-ki
RasIndependent－pathway－in－NK－cellmediated－cytotoxicity
NK (natural killer) cells are lymphocytes distinct from B and T cells that induce perforin-mediated lysis of tumor cells and virus-infected cells. NK
IGF1－Signaling－Pathway
Insulin like growth factor 1 (IGF-1) and its receptor (IGF-1R) provide a potent proliferative signaling system that stimulates growth in many differen
NFkB－activation－by－Nontypeable－Hemophilus－influenzae
The role of Hemophilus influenzae in ear infections and chronic obstructive pulmonary disease includes the induction of an inflammatory response throu
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
fMLP－induced－chemokine－gene－expression－in－HMC1－cells
Neutrophils respond to bacterial infection by releasing reactive oxygen species that kill bacteria and by expressing chemokines that attract other imm
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
Regulation－of－ck1/cdk5－by－type－1－glutamate－receptors
Cdk5 is a cyclin dependent protein kinase involved in dopaminergic signaling in the neostriatal region of the brain. The role of cdk5 in dopamine resp
Lck－and－Fyn－tyrosine－kinases－in－initiation－of－TCR－Activation
T cell activation is initiated by recognition of antigen by the T cell receptor (TCR) in the context of Class II MHC on an antigen-presenting cell. Th
IL12－and－Stat4－Dependent－Signaling－Pathway－in－Th1－Development
Interleukin-12 (IL-12) promotes cell-mediated immunity by inducing Th1 cell differentiation and activation of both T cells and NK cells. Dendritic cel
HIVI－Nef:－negative－effector－of－Fas－and－TNF
HIV infection leads to drastic declines in CD4 T helper cells, in part through apoptosis of uninfected cells. Apoptosis of uninfected cells may be ind
Rac－1－cell－motility－signaling－pathway
Rac-1 is a small G-protein in the Rho family that regulates cell motility in response to extracellular signals. Several changes in cytoskeletal struct