Which of the following forms of lysine would you expect to predominate at low pH, neutral pH and high pH? 2. One of the 20 amino acids is unusual in that its side chain contains a ring that incorporates the amine functional group of the amino acid. What is the name of this amino acid? Write the chemical structure of this amino acid at physiological pH.

Q: 3. Consider the following amino acid: HS. он NH2 a. Draw this structure in a solution of potassium…

A: Introduction The given amino acid is Homocysteine. In a basic solution, the carboxyl group is…

Q: 3. Amino acid residues and peptide bonds (a) Draw the chemical structure of F, S and H joined by…

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Q: 13. Draw the structure of the amino acid lysine showing the correct protonation states of its acid…

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: Show the Dehydration Synthesis reaction that occurs to form a dipeptide containing the following…

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Q: 13. What value do N-linked saccharides serve for membrane surface proteins? Which amino acid…

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Q: 6. Peptide bonds link many amino acids into chains of subunits that make polypeptides, or proteins.…

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Q: 36. Which of the following is true? A. All proteins possess primary, secondary, tertiary and…

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Q: Serine is an uncharged, polar amino acid (below and left). Threonine (below and right) is another…

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Q: 1. Name and draw the structures of standard amino acids that would likely form hydrogen bonds with…

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Q: At pH ___, the pentapeptide Ala-Glu-His-Val-Cys would contain two positively charged groups and one…

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Q: 1. Draw the tripeptide: Val-Leu-Met at pH 7 with the N-terminus to the left and C-terminus to the…

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Q: 5. Determine the answers of these multiple choices they are organised at "a,b,c's" in which is…

A: 1)Answer: The primary chain of a protein is held together by peptide bond. Reason: Amino acids,…

Q: Classify the following amino acids as nonpolar, polar basic, polar acidic, or polar neutral. (a) (b)…

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Q: 5.) If a mutation in an organism's DNA causes the resulting protein to possess a glutamine instead…

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Q: 9. Metabolically active tissues require lots of ATP, and making lots of ATP requires lots of oxygen.…

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Q: 2. Calculate the overall charge (pH 7) on the following three polypeptides and answer the questions…

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Q: 35. Which of the following is true? A. All 20 common amino acids have an amino group and a carboxyl…

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Q: Name the two most common atoms hydrogen bonds within biological systems that give hydrogen a partial…

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Q: 5. The amino acid sequences of three peptide fragments are shown below. Peptide 1: QAMGRAGDLKYLGLHSV…

A: Hi! Thank you for the question. We are authorized to answer three subparts at a time, since you have…

Q: The figure above shows some of the more common modifications, such as phosphorylation (1),…

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Q: 1. In the separation of lysine from histidine using a sulfonated polystyrene column will it be…

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Q: 1. Amino Acid 1 = W + X = Draw amino acid 1 at a low pH a) As the D Fisher Projection Name of amino…

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Q: 7. Aspartic acid has a side chain bearing a carboxylic acid group; its pK, is 4. The a-amino and…

A: Ans. 7) The pKa values tells us about the strength of an acid.

Q: 4. Exhibit 4A The following question(s) refer to this peptide: Cys-Ala-Gly-Arg-Gln-Met Refer to…

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Q: 9. What is sphingosine? For lipids with a sphingosine backbone, to what carbons are the other…

A: The explanation in each question are also included in the answer. Thank you.

Q: 19. Draw all 20 of the genetically encoded amino acids at (a) pH = 1; (b) pH = 1; (c) pH = 12.…

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