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A protein channel is a transport protein that helps larger molecules, that would otherwise not be able to defuse throw the membrane of a cell, to move in or out of the cell depending on the concentration gradient.
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∙ 13y ago
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∙ 12y agoget a clue looser
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What has Dr Sabine Piller has discovered?
Aids protein ion channel transport
Is a protein that forms an ion channel through a membrane is most likely to be a peripheral protein a trans membrane protein a phospholipid an enzyme or an entirely outside the phospholipid?
A protein that forms an ion channel through a membrane is most likely to be a transmembrane protein.
Why are G-protein-gated ion channels called the shortcut pathway?
All action of neurotransmitter is eventually (mostly) manifest in the regulation of ion in nerve cell, to decide when to fire or not an action potential. Regulation of ion utilize the ion channel, and there are three (known) mechanism which affect the opening and closing of an ion channel : 1) direct influence - ion channel which is directly activated by neurotransmitter attached to them, this one is called ¨Transmitter Gated Channel¨ 2) shortcut pathways - ion channel which is activated by G-protein, this is called the ¨G-protein-gated ion channels¨ 3) second messenger cascades - G-protein trigger a chain reaction of chemical through enzyme or other class of protein and finally affect the opening and closing of ion channels
What involves cell membrane receiving and sending messages?
a protein forming a channel for an ion
Does active transport involve phosphoralization?
Yes primary active transport machinery (protein pumps) relies on phosphorylation of the carrier protein. ATP hydrolysis yields the phosphate molecule to interact with the protein pump. This cause the conformational change in the ion channel protein to carry out exchange of ions. For example: sodium-potassium pump: binding of phosphate release sodium from cell, whereas dephosphorylation allows the entry of potassium ions inside the cell.
What has Dr Sabine Piller has discovered?
Aids protein ion channel transport
What type of transport protein is a sodium potassium pump?
It is a carrier protein
Difference between ion pump and channel?
An ion channel is a passive transport and does not require energy for it to occur. An ion pump, meanwhile, is an active transport and requires an input of energy for it begin.
What is a large protein in the cell membrane that transports a specific ion?
Ion channel
Is an ion channel a passive transport?
they are type of passive transports
Is a protein that forms an ion channel through a membrane is most likely to be a peripheral protein a trans membrane protein a phospholipid an enzyme or an entirely outside the phospholipid?
A protein that forms an ion channel through a membrane is most likely to be a transmembrane protein.
Is a protein channel active transport?
They are two major active transport proteins.
What occurs when a receptor protein is coupled with an ion channel?
Changes in permeability occur when a receptor protein is coupled with an ion channelchanges in permeability
Changes in permeability?
Receptor protein is coupled with an ion channel
What are the cell surface receptorss?
G-protein, ion-channel and enzyme-linked protein receptors.
Why are G-protein-gated ion channels called the shortcut pathway?
All action of neurotransmitter is eventually (mostly) manifest in the regulation of ion in nerve cell, to decide when to fire or not an action potential. Regulation of ion utilize the ion channel, and there are three (known) mechanism which affect the opening and closing of an ion channel : 1) direct influence - ion channel which is directly activated by neurotransmitter attached to them, this one is called ¨Transmitter Gated Channel¨ 2) shortcut pathways - ion channel which is activated by G-protein, this is called the ¨G-protein-gated ion channels¨ 3) second messenger cascades - G-protein trigger a chain reaction of chemical through enzyme or other class of protein and finally affect the opening and closing of ion channels
Are gated channels are always open?
Yes, it can a gated ion channel is opened when a signal molecule binds to a receptor protein causing the receptor protein to open the ion channel through the cell membrane and after this process the ion channel is closed once again to prevent various molecules to enter the cell.
