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The three main types of proteins associated with the membrane in a hormone receptor context are: 1) G-proteins, which transduce signals from the receptor to intracellular effectors; 2) receptor tyrosine kinases, which initiate a cascade of phosphorylation events upon ligand binding; and 3) adaptor proteins, which facilitate the interaction between the receptor and downstream signaling pathways. These proteins collectively enable cellular responses to hormones by relaying and amplifying signals initiated at the membrane.
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Which cell contains membrane proteins en- abling a hormone to selectively bind to its plasma membrane?
The cell membrane contains the membrane proteins that enable a hormone to selectively bind to its plasma membrane. These proteins, such as receptor proteins, are responsible for recognizing and binding to specific hormones, allowing the hormone to exert its effects on the cell.
Does cholesterol function as a hormone receptor in the plasma membrane?
No, cholesterol does not directly function as a hormone receptor in the plasma membrane. Hormone receptors are typically proteins embedded in the membrane that bind specific hormones to initiate signaling pathways. Cholesterol primarily provides structural support and fluidity to the plasma membrane.
A cell that contains proteins enabling a hormone to selectively bind to its plasma membrane is called what?
Target cell
Is the responsiveness of cells to hormones determined by the presence or absence of specific hormone receptor proteins?
Yes, the responsiveness of cells to hormones is determined by the presence of specific hormone receptor proteins on the cell surface or inside the cell. When a hormone binds to its corresponding receptor, it triggers a cellular response. Cells without the specific receptor for a hormone are not able to respond to that hormone.
What membrane proteins is responsible for binding hormones that can trigger changes in the cells activity?
The membrane proteins responsible for binding hormones and triggering changes in cell activity are called hormone receptors. These receptors are typically located on the cell membrane and can be categorized into different types based on their structure and mechanism of action. Upon hormone binding, these receptors initiate signal transduction pathways that lead to specific cellular responses.
Which cell contains membrane proteins en- abling a hormone to selectively bind to its plasma membrane?
The cell membrane contains the membrane proteins that enable a hormone to selectively bind to its plasma membrane. These proteins, such as receptor proteins, are responsible for recognizing and binding to specific hormones, allowing the hormone to exert its effects on the cell.
Does cholesterol function as a hormone receptor in the plasma membrane?
No, cholesterol does not directly function as a hormone receptor in the plasma membrane. Hormone receptors are typically proteins embedded in the membrane that bind specific hormones to initiate signaling pathways. Cholesterol primarily provides structural support and fluidity to the plasma membrane.
A cell that contains proteins enabling a hormone to selectively bind to its plasma membrane is called what?
Target cell
What membrane protein is responsible for binding hormones that can switch on a cell?
The membrane protein responsible for binding hormones that can switch on a cell's response is typically a hormone receptor. These receptors are often found on the surface of the cell membrane and can activate signaling pathways inside the cell in response to hormone binding.
Is the responsiveness of cells to hormones determined by the presence or absence of specific hormone receptor proteins?
Yes, the responsiveness of cells to hormones is determined by the presence of specific hormone receptor proteins on the cell surface or inside the cell. When a hormone binds to its corresponding receptor, it triggers a cellular response. Cells without the specific receptor for a hormone are not able to respond to that hormone.
What membrane proteins is responsible for binding hormones that can trigger changes in the cells activity?
The membrane proteins responsible for binding hormones and triggering changes in cell activity are called hormone receptors. These receptors are typically located on the cell membrane and can be categorized into different types based on their structure and mechanism of action. Upon hormone binding, these receptors initiate signal transduction pathways that lead to specific cellular responses.
Why target cell respond to the hormone while others are uneffected?
Hormones are chemical messengers. In order to have an effect on a cell then it is necessary for the cell to have the correct receptor proteins. The hormone can bind to these receptor proteins and therefore will affect the cell.
Which type of hormone receptor-plasma membrane bound or intracellular- would be expected to provide the most long lived response to hormone binding and why?
Intracellular receptor responses would be longer since they create a hormone-receptor complex which stimulates the production of mRNA, which then creates proteins. This complex must be degraded over time. Also, the entire process takes longer. Intracellular receptor responses would be longer since they create a hormone-receptor complex which stimulates the production of mRNA, which then creates proteins. This complex must be degraded over time. Also, the entire process takes longer.
What is the membrane protein's function?
Membrane proteins have many different functions; many are involved in transport across the cell membrane, such as channels, carriers and pumps (e.g .the Na/K-ATPase and P-glycoprotein), others are hormone receptors (e.g. EGFR and the insulin receptor) or confer structure to the cell membrane.
What water-soluble hormone would most likely bind to what membrane proteins?
Channel linked receptors bind to neurotransmitters. (also called ion channels and ligand gated ion channels) A ligand is the signal molecule i.e the neurotransmitter. Hormones bind to intracellular receptors because hormones are non polar and can cross the cell's plasma membrane. (also called cytoplasmic receptors)
What is the similarities between enzyme and hormone?
Both enzymes and receptors have specific sites for the substrates to bind. The receptor causes a response beyond the cell membrane and the enzyme facilitates a chemical change in the substrate. Enzymes can be membrane bound or free floating. Receptors are usually membrane proteins
When a hormone molecule binds to a specific protein on the plasma membrane the protein it binds to is called?
... a receptor protein.
