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What drug that interferes with the binding of signal molecules to receptor proteins in the heart muscles?
Wiki User
∙ 14y ago
the beta blocker.
Wiki User
∙ 14y ago
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What is binding buffer?
It contain acetate and chaotrope. It disrupts the intermolecular forces between water molecules,allowing proteins and other macromolecules to dissolve more easily.
What enables a cell to pick up and concentrate a specific kind of molecule?
Receptor-mediated endocytosis: only a specific molecule, called a ligand, can bind to the receptor. Without receptor binding occurring first, endocytosis does not proceed.
What type of molecules are the electrolytes?
Polar molecules which contain ionic or dipole to dipole forces binding their molecules in molten state.
Is terbium poisonous?
Probably. Terbium is known to bind with calcium-binding proteins that occur widely in the body and perform hundreds of functions. Lead, cadmium, and manganese poisoning are all linked to this same binding. Because calcium binding proteins are so common, it is difficult to predict what the symptoms of such poisoning would be.
How do heavy metals act as a denaturing agent for proteins?
Denaturation is characterized by nucleic acids or proteins losing their secondary and tertiary structure due to an external compound or stress application. Inorganic acid interferes with the amino acid bonds that make up a protein's tertiary structure. This changes the protein's shape as part of the denaturation process.
What membrane proteins is responsible for binding hormones that can trigger changes in the cells activity?
receptor proteins
Large molecules may have reaction sites termed?
Molecules and cells have reaction and activity areas known under three terms. These are active, receptor, and binding sites. Such sites have markers and binding proteins allowing for their activation and or transfer of genetic materials.
What membrane protein is responsible for binding hormones that can switch on a cell?
Receptor proteins.
Which is a correct association of protein types?
Receptor proteins- have a binding site for a specific molecule
What molecule is activated from the binding of an odorant to transmembranous receptor molecules on olfactory hairs?
G-Protein
What keeps intracellular receptors from binding to DNA before a hormone binds to the receptor?
chaperone proteins (chaperonins)
Compare two ways that the binding of a signal molecule to a receptor protein causes a change in activity the receiving cell?
1. Insulin binding to insulin receptor tyrosine kinase on hepatocyte: increased glucose uptake, increased glycogen and fatty acid production and decreased catabolism in general (decreased gluconeogenesis, lipolysis, and proteolysis). Insulin binding causes receptor dimerization and self-phosphorylation. Phosphorylated receptor recruits scaffold proteins and downstream target proteins and phosphorylate them. Phosphorylated target proteins serve as kinases and activate or deactivate other proteins by phosphorylation, effecting appropriate effects. 2. Erythropoietin binding to EPO cytokine receptor on Common Myeloid Progenitor cell: eventual differentiation into erythrocyte. Cytokine receptor induces the Jak/STAT pathway resulting in altered gene expression by transcription factors, drastically changing the function and morphology of the cell.
Difference between receptor proteins and carrier proteins?
Receptor proteins are fond in cell membrane surfaces. They are not transport proteins, they conduct the signalling event that cause the cell proliferation, migration and cell death process such as apoptosis. Hormones activates such signalling cascades by binding on the hormone receptors of the cell.
How does olfaction occur?
Within the nasal cavity, odorant molecules interact with the cilia on odorant receptor cells. The binding of odorant molecules onto receptor proteins causes a net change in the membrane permeability of the receptor cells which then causes an action potential to be generated by the receptor cell. Unlike other senses, olfaction is not redirected by the Thalmus. It instead goes directly from the afferent receptor cells to the olfactory bulb. From the olfactory bulb, the action potential is sent directly to the cerebral cortex, specifically the limbic system (this is why there is a large emotional association with smell).
How proteins are suited for their roles as receptor molecule?
Mark scheme: - Many different sorts of proteins - Different primary structure/sequences of amino acids - Tertiary structure - Shape; allowing formation of receptor/binding site/site into which substrate/substrate fits
Do Hormones bind to receptor proteins with high capacity and low affinity?
Hormones do not bind to receptors with high capacity. The major defining properties of a hormone-receptor interaction, and what determines the strength of response is binding affinity and efficacy.
What Is receptor mediated transport?
Endocytosis is the bulk transfer of materials from inside to outside of a cell with the help of special vesicles. Types of Endocytosis : 1) phagocytosis 2) potocytosis 3) receptor mediated endocytosis
