What are the differences between Gs, Gq, Gi, and Go signal transduction?
Gs, Gq, and Gi are G alpha subunit in the trimeric G protein,
activated Gs stimulates the adenylate cyclase so that the levels of
the cAMP in the cell increases, whereas activated Gi inhibits the
adenylate cyclase so that the levels of cAMP in the cell decreases.
activated Gq activates phospholipase C
which hydrolyzes the phosphatidylinositol 4,5 bisphosphate to
diacylglycerol and Inositol triphosphate (IP3), IP3 causes the
release of Ca2+.
What are the differences between Gs, Gq, Gi, and Go signal transduction?
What are some similarities and differences between the signal transduction systems of the regulation of chemotaxis and quorum sensing? Your explanation should include a discussion of the functions of the components of each system (e.g. What is the sensor? What is the kinase? What is the response protein and what does it do?).
5. What is the function of phosphatases in signal transduction processes? Amplify the transduction signal so it affects multiple transducers Amplify the second messengers such as CAMP Inactivate protein kinases and turn off the signal transduction Prevent a protein kinase from being reused when there is another extracellular signal Move the phosphate group of the transduction pathway to the next molecule of a series
Generalized and specialized transduction both involve bacteriophages. What are the differences between these two types of transduction?
a) Describe the VEGFR signal transduction pathway. What is a RTK? How does it transmit an external signal to the interior of the cell? What is the response of the cell? b) How can signal transduction pathways can be used to explore and develop possible new drugs for breast cancer treatment?
what is the role of the retinal molecule in the process of light stimulated signal transduction in the eye ? explain in a paragraph
What two classes of enzymes are very common in signal transduction pathways, and why?
What type of protein in cAMP signal transduction would be analogous to the phosphatases of phosphorylation cascades?
Which of the following is TRUE regarding the signal transduction of smell? (only one response is correct) A. Each glomerulus receives input from a population of olfactory receptor cells responding to a specific odorant molecule B. Chloride moves into the olfactory receptor cell due to its large extracellular concentration C. Odorant molecules binding to Gs receptors leads to activation of adenylyl cyclase -> cAMP -> Ca++ influx D. Unlike other senses, there is no mapping of odors in the nervous...
In the cAMP signal transduction pathway, a protein kinase is activated. What happens next G protein is activated. cAMP is converted to ATP. The protein kinase activates a cellular response. GDP is replaced by GTP. Adenylyl cyclase is activated.
What signal transduction pathway is utilized almost exclusively by interferons? Jak-STAT pathway cAMP-PKA pathway Ras-MAPK pathway NF-kB pathway Gluconeogenesis pathway