Suggest a reason why amino acids are usually more soluble at pH extremes than they are at neutral pH. (Note that this does not mean that they are insoluble at neutral pH.)
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- Which of the following peptides will likely form a loop or turn in a protein and explain whyThe simplest form of the Ramachandran diagram is calculated by ignoring hydrogen bonding, interactions with water, and the hydrophobic effect. Why is this simple form of the diagram still an effective predictor of protein backbone conformation?Determine the pI of the peptide H2N-Ala-Lys-Ser-Arg-COOH at pH 11, please explain why some pKas are used in the solution of the problem while others are not.
- Considering the chemical characteristics of the amino acids valine and glutamic acid (see Figure 5.14), propose a possible explanation for the dramatic effect on protein function that occurs when valine is substituted for glutamic acid.Despite being hydrophobic, why is methionine (Met) not located within a protein?Provide Full name, abbreviated name, describe the type of interactions are present for this tripeptide between amino acids and the functional groups. How would this peptide interact with water?
- The addition of ethanol, CH3CHOH, t an aqueous solution lowers the surface tension of the solution. Predict whether adding ethanol to an aqueous protein solution will tend to stabilize or unfold the protein. Briefly explain.Using the picture provided, can you please help me with... A) which Amino Acids are Hydrogen Bond Donors? B) the 5 compouns that are most stable in the cell membrane? C) the 4 compounds that are most soluble in water? Perhaps the names of these different Amino Acids? Thank You!!Many plasma proteins found in an aqueous environment are globular in shape. Which amino acid side chains would you expect to find on the surface of a globular protein and in contact with the aqueous environment? Which would you expect to find inside, shielded from the aqueous environment? Explain. Q.) Arg