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Three Questions: The uniform arrangement of the backbone carbonyl oxygens and amide nitrogens in an α helix gives the helix a net dipole, so that it carries a partial positive charge at the amino end and a partial negative charge at the carboxyl end. Where would you expect the ends of α helices to be located in α protein? Why?
Comparison of a homeodomain protein from yeast and Drosophila shows that only 17 of 60 amino acids are identical. How is it possible for a protein to change over 70% of its amino acids and still fold in the same way? Can you mention one example?
In 1968 Cyrus Levinthal pointed out a complication in protein folding that is widely known as the Levinthal paradox. He argued that because there are astronomical numbers of conformations open to a protein in the denatured state, it would take a very long time for a protein to search through all the possibilities to find the correct one, even if it tested each possible conformation exceedingly rapidly. Yet denatured proteins typically take less than a second to fold inside the cell or in the test tube. How do you suppose that proteins manage to fold so quickly?
Which reaction does a kinase catalyze in a signal transduction pathway and Which of the following does a catalyst change during a chemical reaction
Are fungi gram positive or gram negative? Explain based on the structure of its cellular envelope and explain the basis for your answer in terms of specific non-informational macromolecules.
Describe the evolutionary significance of segmentation
What is the role of DNA gyrase in transcription.
Explain how does homeostasis maintain a dynamic range of environmental qualities rather than hold the internal environment at a set point?
Many endangered plant and species are currently propagated by commercial growers and botanical gardens and then sold (as both plants and seeds) to government agencies, conservation organizations, garden clubs and the general public, who then in ef..
Although all protein structures are unique, there are common structural building blocks that are referred to as regular secondary structures. Some have a helices, some have ß sheets, and still others have a combination of both. What makes it possi..
question 1 a definition of a virus. how has your personal definition of a virus evolved? write a paragraph providing a
If the homozygous recessive genotype makes of 9% of the population and the heterozygous genotype makes up 42% of the population, what is the frequency of the dominant allele in that population?
Carrier proteins share several characteristics with enzymes. In what ways are carrier proteins and enzymes similar
Why might females choose the dominant male of a pair in a wild turkey lek over a single male?
acupunture historyusesproscons does the american insurance cover this acupunture? another second assignment is aids
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