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A signal molecule is a molecule that causes some change in the body due to the transfer of signal carried by it.this signal molecules are received by the receptors present on the surface of the cell.there are two types of receptors present inside and outside the cell-one is present on the surface of the cell membrane and the other is present on the surface of the nuclear membrane.
eg:neuro transmitters,hormones
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∙ 13y ago
Wiki User
∙ 10y agoSIGNAL PROTIEN - is part of a complex system of communication that tells basic cellular activities and coordinates of cell actions. (The ability of cells to receive and correctly respond to their microenvironment is the basis of development, tissue repair, and immunityas well as normal tissue homeostasis.) Errors in cellular information processing are responsible for/cause diseases such as cancer, autoimmunity, and diabetes.
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∙ 11y agoA protein used for signaling in the transduction phase is called a protein kinase.
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∙ 12y agoMake other proteins and repair ripped muscle tissue
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When a signal molecule binds to a receptor protein the receptor protein may change the?
shape.
What binds to a signal molecule enabling the cell to respond to the signal molecule?
receptor proteins bind to signal molecules
What is the function of a signal-recognition particle?
Guide the signal sequence to the appropriate site on the rough endoplasmic reticulum for protein synthesis.
When a signal molecule such as a growth hormone binds to a receptor protein in the plasma membrane it stays on the outside of the cell. How might the inside of the cell know that the signal has bound?
Due to a conformational change of the receptor protein....
When a receptor protein in a cell membrane acts as a enzyme the receptor protein does what?
When a receptor protein acts as an enzyme, the receptor protein activates a second messenger that acts as a signal molecule within the cell. Resources: HOLT Biology Textbook - 9th grade edition Chapter 4, Cells and Their Environment.
What does a protein phosphatase actually do to end a signal transduction?
Protein phosphates turn off signal transduction pathways by removing the phosphate groups from the protein kinase, making them reusable and making the kinase inscribe stopping the signal transduction pathway.
When a signal molecule binds to a receptor protein the receptor protein may change the?
shape.
What is the role of a G-protein?
They initiate signal transduction which consists of converting extracellular hormone signal to intracellular signal that creates an action.
What binds to a signal molecule enabling the cell to respond to the signal molecule?
receptor proteins bind to signal molecules
What is the function of a signal-recognition particle?
Guide the signal sequence to the appropriate site on the rough endoplasmic reticulum for protein synthesis.
When a signal molecule such as a growth hormone binds to a receptor protein in the plasma membrane it stays on the outside of the cell. How might the inside of the cell know that the signal has bound?
Due to a conformational change of the receptor protein....
When a receptor protein in a cell membrane acts as a enzyme the receptor protein does what?
When a receptor protein acts as an enzyme, the receptor protein activates a second messenger that acts as a signal molecule within the cell. Resources: HOLT Biology Textbook - 9th grade edition Chapter 4, Cells and Their Environment.
Epinephrine acts as a signal molecule that attaches to proteins?
G-protein-linked receptor
What toxin inhibits the production of GTP in a signal transduction pathway?
G-protein-linked
Relaying a message from a receptor protein to a molecule that performs a specific function within a cell is called?
Signal Transduction
The process of transduction usually begins?
When the signal molecule changes the receptor protein in some way.
What does a signal transmitted via phosphorylation of a series of proteins do?
They bring a conformational change to each protein.
