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Does tyrosine-kinase receptors consist of two polypetides that join when activated by a signal molecule?
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Proteins are polymers of what kind of molecule?
Proteins are polymers of amino acid molecules
What does it means that a molecule is activated?
You may be talking about the activated complex, which is a kind of unstable "molecule" that is a transition state between the products and the reactants in a reaction.
How do sensory receptors work?
A receptor is generally a recognition molecule situated on the surface of a cell. A receptor is a molecule that is sensitive to a particular signal and is also able to transmit information to the nucleus in order to control gene regulation. In order for a receptor to function, it must first be activated. The binding of a ligand to the receptor places the receptor in the activated state. Once the receptor is activated, it is now able to transmit signal to the interior of the cell.
When protein membrane receptors are activated what usually happens?
When protein membrane receptors are activated, they usually undergo a conformational change, which triggers a downstream signaling cascade. This cascade can involve the activation of intracellular proteins or the production of second messengers, leading to a variety of cellular responses such as gene transcription, enzyme activation, or changes in cellular metabolism. Ultimately, the activation of protein membrane receptors initiates a cellular response to the signaling molecule that bound to the receptor.
What molecule is activated from the binding of an odorant to transmembranous receptor molecules on olfactory hairs?
G-Protein
Which process involves antibodies covering surface receptors on a virus or toxin molecule thereby disrupting their activity?
Neutralization
Some enzymatic receptors and most G-protein-coupled receptors carry the signal molecule's message into the target cell by utilizing other substances within the cytoplasm commonly called?
Second Messengers :)
What is the molecule found on the outer surfaces of cells that the immune system recognizes as either part of the body or an outsides invader?
receptors
How do receptors pick up info?
The stimulus causes a depolarization to occur in the sensory receptor cells. This can cause impulse to run all the way down the axon (by passing the cell body in the Dorsal root ganglion) and enter the dorsal horn of the spinal cord.
How are hormones important in cellular communication?
By bind with specific receptors, the hormones are able to regulate reproduction, development, energy metabolism, growth, and behavior. The reason why it is important that these functions be activated through hormones (a signaling molecule) is because there is an exact time that these functions need to happen. A caterpillar can't start changing into a butterfly if it hasn't finished its cacoon yet.
What is the purpose of receptor proteins?
The intracellular proteins form the most important class of receptors called receptor proteins. Receptor proteins are located in the cytoplasm, cell membrane, or nuclear membrane. 1. Cytoplasmic receptor proteins include those that respond to steroid hormones. Ligand activated receptors may enter the cell nucleus where they modulate gene expression. 2. Receptors within cell membranes may be peripheral or trans-membrane proteins. Many receptors for hormones and neurotransmission are trans-membrane proteins. - a. Metabotropic receptors are coupled to G-proteins, acting through various secondary pathways involving ion channels, enzymes such as adenylyl (adenylate) cyclases, and phospholipases, or PDZ domains. - b. Ionotropic receptors are ligand-activated ion channels that permit entry of ions when the central pore is open. A receptor protein is protein molecule that found embedded in the plasma membrane surface of a cell. It receives chemical signals from outside the cell.
What is the job a a receptor molecule?
A receptor molecule is a molecule that receives information from outside the cell. They are embedded in either the plasma membrane or cytoplasm of a cell. A specific molecule on the surface or inside of a cell with a characteristic chemical and physical structure. Many neurotransmitters and hormones exert their effects by binding to receptors on cells.
