Give the amino acid sequence of the peptide below by using the three-letter amino acid abbreviations. Separate each abbreviation with a hypen (-) without including any spaces. Follow the convention of starting with the amino terminus amino acid and ending with the carboxyl terminus amino acid. H₂N. amino terminus val-tyr X carboxyl terminus Viewing Saved Work Revert to Last Response Submit Answer OH

Amino Acids and Proteins 1. What are the structural features of amino acids with an emphasis on essential amino acids? 2. Write the properties of amino acids: zwitterion, pka, pKb, amphoteric character, isoelectric point, and electrophoresis. 3. Write the mechanism of peptide bond formation and what are its structural features. 4. What are the different types of proteins and their function? 5. Explain the meaning and importance of the primary, secondary, tertiary, and quaternary structures of a protein and the factors that cause its denaturation.

Fill in primary, secondary, tertiary or quaternary into the following statements about proteins: Global folding of peptides stabilized by side-chain interactions is known as a ___(A)___ protein.  Multiple tertiary structures bonded together is a called a  ___(B)___ protein. A ___(C)___ protein is a sequence of amino acids bonded together. A protein in the alpha helix formation is called a ___(D)___ protein, and utilizes H-binding interactions on the amino acid backbone to hold the shape.   Select one: a. (A) tertiary, (B) secondary, (C) primary, (D) quaternary b. (A) primary, (B) quaternary, (C) tertiary, (D) secondary c. (A) quaternary, (B) tertiary, (C) primary, (D) secondary d. (A) tertiary, (B) quaternary, (C) primary, (D) secondary

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Refer to following peptide: Trp-Val-Ser-Met-Gly-Glu × Incorrect. Draw a bond-line structure of the peptide. Include stereochemistry in your answer. Do NOT explicitly draw any hydrogen atoms in your structure or use abbreviations like OMe, COOH or Ph. HN H₂N H₂C CH₂ OH Edit Drawing HO CH₂ OH

Modify isoleucine to show its structure at pH 1 and pH 13. Modify each amino acid by adding or removing atoms or bonds and by adding charges where appropriate. pH 1 pH 13 Select Draw Rings More Erase Select Draw Rings More Erase H N H N CH, CH, CH, CH, H,C - CH H,C - CH H,N C- 0 - H - H,N - C - C- 0 - H II H.

the amino acid is tryptophan

(Select all that apply.) - 8_君_第_苦_宝

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Chemistry Consider the structure of the peptide below and answer the questions that follow. OH CH₂ OH H₂N CH₂ OH choose your answer..... V 1. How many peptide bonds are there? 2. What is the N-terminal amino acid? 3. What is the C-terminal amino acid? choose your answer... choose your answer... H₂C V V