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What type of membrane proteins have an exposed site on the outer cell surface that can attach to a ligand?
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Function of peripheral proteins?
Peripheral membrane proteins are proteins that adhere only temporarily to the biological membrane with which they are associated. Peripheral proteins are not bonded as strongly to the membrane. They may just sit on the surface of the membrane, anchored with a few hydrogen (H) bonds.
Hormones attach to plasma membrane proteins called?
target cells
A protein on the surface of HIV can attach to what proteins on the surface of healthy human cells?
Receptor molecules
Are cell junctions found between plant cells only?
No, they can be found in animal cells and attach in the cytoskeleton and also attach in membrane proteins
What are membrane receptors that attach phosphates to specific animo acids in proteins?
called receptor tyrosine-kinases
Proteins at the inner surface of the plasma membrane attach the membrane to the cells support structure making the cell rigid?
false
Is it true that proteins at the inner surface of the plasma membrane attach the membrane to the cell's support structure making the cell rigid?
Your question is unclear, but a cell is supported by the cytoskeleton.
Function of peripheral proteins?
Peripheral membrane proteins are proteins that adhere only temporarily to the biological membrane with which they are associated. Peripheral proteins are not bonded as strongly to the membrane. They may just sit on the surface of the membrane, anchored with a few hydrogen (H) bonds.
Which type of membrane protein attaches to specific hormones such as insulin?
The membrane proteins that attach to specific hormones such as insulin are called receptor proteins.
Hormones attach to plasma membrane proteins called?
target cells
Functions of integral membrane protein?
Integral proteins are found within the membrane and have hydrophobic regions embedded within the membrane and hydrophilic regions that project from both surfaces of the bilayer Many integral proteins are glycoproteins, which have an attached carbohydrate chain. As with glycolipids, the carbohydrate chain of sugars projects externally. There- fore it can be said that the plasma membrane is "sugar- coated." The plasma membrane is asymmetrical: the two halves are not identical. The carbohydrate chains of the glyco-lipids and proteins occur only on the outside surface and the cytoskeletal filaments attach to proteins only on the inside surface
Is it true that proteins at the inner surface of the plasma membrane attach the membrane to the cells support structure making the cell rigid?
The primary proteins of cellular structure (such as in microfilaments or intermediate tubules) is myosin and actin, and sometimes collagen, and all of these are proteins in the cell. Because proteins generally connect to similar structures (aka other proteins), and the cellular membrane must SOMEHOW be attached to the primary cell structure, and it is easier to connect to the inner membrane than outer, the answer is yes.
Neurotransmitters attach to what molecules in the cell membrane?
Neurotransmitters attach to proteins with sugars attached. The receptors then tell the molecules what to do and where to go in the cell.
A protein on the surface of HIV can attach to what proteins on the surface of healthy human cells?
Receptor molecules
Are cell junctions found between plant cells only?
No, they can be found in animal cells and attach in the cytoskeleton and also attach in membrane proteins
What are membrane receptors that attach phosphates to specific animo acids in proteins?
called receptor tyrosine-kinases
What is the function of the peripheral protein?
Peripheral membrane proteins are proteins that adhere only temporarily to the biological membrane with which they are associated. These molecules attach to integral membrane proteins, or penetrate the peripheral regions of the lipid bilayer. The regulatory protein subunits of many ion channels and transmembrane receptors, for example, may be defined as peripheral membrane proteins. In contrast to integral membrane proteins, peripheral membrane proteins tend to collect in the water-soluble component, or fraction, of all the proteins extracted during a protein purification procedure. Proteins with GPI anchors are an exception to this rule and can have purification properties similar to those of integral membrane proteins.
