THE CELL
CELL COMMUNICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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brings a conformational change to each protein.
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requires binding of a hormone to a cytosol receptor.
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cannot occur in yeasts because they lack protein phosphatases.
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requires phosphorylase activity.
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Detailed explanation-1: -Signal transduction is the process by which a chemical or physical signal is transmitted through a cell as a series of molecular events, most commonly protein phosphorylation catalyzed by protein kinases, which ultimately results in a cellular response.
Detailed explanation-2: -In addition, the phosphorylation of a protein can regulate the process of signal transduction since it is able to trigger the subcellular translocation of the protein phosphorylated by the mechanism itself.
Detailed explanation-3: -Changes in protein level, protein localization, protein activity, and protein–protein interactions are critical aspects of signal transduction, allowing cells to respond highly specifically to a nearly limitless set of cues and also to vary the sensitivity, duration, and dynamics of the response.
Detailed explanation-4: -Phosphorylation plays critical roles in the regulation of many cellular processes including cell cycle, growth, apoptosis and signal transduction pathways. Phosphorylation is the most common mechanism of regulating protein function and transmitting signals throughout the cell.