Receptor Site Theory
ligand that binds to it. For example, a receptor can trigger different signaling pathways or cellular responses if it binds to different ligands, even if they bind to the same binding site on the receptor. This is known as ligand-dependent receptor activation.
No, chemical transmitters can only stimulate specific receptor sites that they are designed to bind to. Each transmitter has a specific shape that fits into a corresponding receptor site like a lock and key, triggering a specific response in the target cell. This specificity is essential for precise communication between cells in the body.
In a process called reuptake, they are reabsorbed by sending the neuron and recycled.
The chemical would be considered as odorless to that person because without the specific receptor site on the cilia of the olfactory neurons, the individual would be unable to detect or perceive the smell of the chemical.
The glycoprotein CD4 is a co-receptor. A co-receptor is "a cell surface receptor, which, when bound to its respective ligand, modulates antigen receptor binding or affects cellular activation after antigen-receptor interactions." (MediLexicon)
Receptor Site Theory
The role of the CD4 receptors in HIV is so that the virus fuses with the T helper cells.
CD4 is a surface receptor expressed by helper T lymphocytes, known as CD4+ T cells. Its purpose is to stablize the interaction between the T cell receptor (on the T cell) and an antigen-bearing MHC Class II molecule (on an antigen presenting cell). Under the right circumstances, this interaction activates CD4+ T cells that recognize an invading pathogen. Activated CD4+ T cells do many things, and are required for a robust adaptive immune response.
Proteins can cover the binding site of a receptor and prevent another molecule from binding to it. This interaction can inhibit the receptor's activity and affect cellular signaling pathways.
ligand that binds to it. For example, a receptor can trigger different signaling pathways or cellular responses if it binds to different ligands, even if they bind to the same binding site on the receptor. This is known as ligand-dependent receptor activation.
No, chemical transmitters can only stimulate specific receptor sites that they are designed to bind to. Each transmitter has a specific shape that fits into a corresponding receptor site like a lock and key, triggering a specific response in the target cell. This specificity is essential for precise communication between cells in the body.
A lavender-top tube is typically used for CD4 cell count testing.
coz CD8 and CD4 are two diffrent types of proteins .. n HIV requires cd4 to fuse for replicatin
The CD4 count is the result of the most important test used to monitor HIV. The 'absolute' count is the same as the CD4 count. This is the result you get back from your doctor. The term 'absolute' is used to differentiate it from CD4 percentage (CD4%) which can also be used for clinical management.
The binding site is where a specific binding molecule and a specific receptor protein can combine. This combination can only occur at the binding site. All in the 9th grade text book
500 cells/mm3 to 1,000 cells/mm3 CD4 T cells