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What would be an example of protein receptor intiating a signal transduction cascade?
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What is a signal transduction pathway?
A signal transduction pathway is a group of proteins that carry out transducing signals (which means it converts signals from outside the cell to a different signal inside the cell). A good example can be viewed when a hormone binds to the receptor in the plasma membrane (outside the cell), the receptor which has now been activated can now interact with intercellular proteins which produce new signals inside the cell.
How does a transmembrane receptor cause the stimulation of a cell does it take something from the chemokine and feed it through its transversile midsection and into the cell giving it to a transport?
N. Take a G protein linked receptor for an example. The ligand docks and causes a conformational change that causes a G protein to dock with the transmember protein receptor and initiate signal transduction through secondary messengers.
What is a channel linked receptor?
A channel linked receptor transduces functions of the same protein molecule. An example of a channel linked receptor are neurotransmitters in the brain.
What are sensory transduction?
The transduction is a process which passes messages from cell surface to inner components of the cell. For example: uptake or release of glucose, protein synthesis, etc.
What is the definition of the prefix cas?
to fall: EXAMPLE cascade casualty
Who got noble prize for discovering G protein?
G proteins were discovered when Alfred G. Gilman and Martin Rodbell investigated stimulation of cells by adrenaline. They found that, when adrenaline binds to a receptor, the receptor does not stimulate enzymes directly. Instead, the receptor stimulates a G protein, which stimulates an enzyme. An example is adenylate cyclase, which produces the second messenger cyclic AMP. For this discovery, they won the 1994 Nobel Prize in Physiology or Medicine.
What are the Example of program virus?
this are sunday virus, cascade virus, professors virus.
What is specialized transduction?
In case of special transduction, the transductor phage can transfer only certain chromosomal markers. For example: Lambdoidal-phague and E. coli system.
Proteins each of which has a three dimensional shape complementary to that of a specific signal molecule?
You are likely referring to receptor proteins. Receptor proteins are used extensively in the endocrine, nervous and immune systems to carry out signal transduction and communication between cells. For example, an endocrine receptor may be the insulin receptor, which dimerizes upon signal molecule (insulin) binding and induces a series of changes in the cell leading to increased glucose uptake, increased glycolysis and decreased gluconeogenesis. A nervous system receptor may be a neurotransmitter receptor located at synapses that induces an action potential in the downstream neuron if it binds to a neurotransmitter released by the upstream neuron. The immune system makes extensive use of receptors and these receptors may be cell-surface bound or even soluble (e.g. antibodies). They are involved either in recognizing foreign molecules, transmission of activation signals for leukocytes, or administration of death (apoptosis) signals to other kinds of cells.
Do cells respond to every signal Explain?
Different cels respond to stimuli in different ways.Forexample,HL-60 cells differentiate to monocytes/macrophages when they exposed to vitamine D3 but they differentiate into granulocytes when they exposed to retinoc acid.
Which of the following drugs is an example of a selective 5-HT receptor agonist?
midril
WhatConversion of a stimulus into a generator potential is?
Receptor potential, a type of graded potential, is the transmembrane potential difference of a sensory receptor. A receptor potential is often produced by sensory transduction. It is generally a depolarizing event resulting from inward current flow. The influx of current will often bring the membrane potential of the sensory receptor towards the threshold for triggering an action potential. A receptor potential is a form of graded potential, as is a generator potential. It arises when the receptors of a stimulus are separate cells. An example of this is in a taste bud, where taste is converted into an electrical signal sent to the brain. When stimulated the taste bud triggers the release of neurotransmitter through exocytosis of synaptic vesicles from the presynaptic membrane. The neurotransmitter molecules diffuse across the synaptic cleft to the postsynaptic membrane. A postsynaptic potential is then produced in the first order neuron, and if the stimulus is strong enough to reach threshold this may generate an action potential which may propagate along the axon into the central nervous system
