Palmitoyl-pentapeptide-3 is a component of antiaging creams. It contains the pentapeptide shown as part of its...
Protein Structure A protein contains a string of amino acids (usually more than 50) that has a biological function. 15ecause proteins are so large, their structure has several levels, all of which are important for the proper functioning of the protein. Ultimately, the sequence of amino acids (ordering of polar and nonpolar amino acids) dictates the 3-dimensional shape of a protein and this dictates its primary function. Level 1: Primary (1") The amino acid sequence of a polypeptide Protein Backbone...
From N to C terminus, name the amino acids in the polypeptide shown below using single-letter codes. (Do not use punctuation marks or spaces to separate the letter (ie. if the 3 amino acids are A, B and C, write the sequence as ABC) 0 - 0- CH3 6- H₃C CH₂ Han CH2 CH2 CH-CH3 CH2 CH3 CH2 CH2 NH3 Which of the following is NOT a naturally occurring amino acid? OA) H3NCH-Coo OB) H3NCH-Coo CH2 он Oc) HNCH-Coo CH-OH...
Question 5 Bio206 Homework 6 Amino Acids and Proteins Organic Chemistry II Due May 6, 2017 1. Which amino acid is least likely to be found in a natural protein? CH20H NHz CHs IV 2. A pentapeptide has the molecular formula: Asp, Glu, His, Phe, Val. Partial hydrolysis of the pentapeptide gives: Val Asp, Glu His, Phe Val, and Asp Glu. What is the amino acid sequence of the pentapeptide? 3. When the pentapeptide below is heated first with 2,4-dinitrofluorobenzene...
s smı peptdes and ultimately proteins through a condensation fatt similar to the reactions that form a triglyceride from glycerol Amino acids combine to form peptides an protonated aater molecule is removed when a carboxylate and and three fatty acids. One and thretis amine react. Figure 1: o- HI Carboxylate reacts with Protonated Amide forming amine 2. Consider the two amino acids, tryptophan and serine bonds can be formed between these acids? How many different peptide 3. Draw each of...
just complete 8-10 please coo CH3 CH2 H CH H H HN-c-c-N-C-C-N-C-C-N-C-Coo H OH OH OH 1. How many amino acid residues are in this structure? 2. How many peptide bonds are in this structure? 3. What is the name of the C terminal residue? 4. What is the one-letter abbreviation of the N-terminal residue? 5. What is the sequence, given in three-letter code, of this peptide? 6. Circle one peptide bond. 7. Circle one alpha-carbon. 8. What is the...
why the answer is B d start codon in groups of three bases Answer 3. The fourth codon in an mRNA sequence is GGG which specifies glycine. If we assume that no omino Acids are removed from the polypeptide, which of the following statements is correct? a. The third amino acid from the N-terminus is glycine. h. The fourth amino acid from the N-terminus is glycine. The third amino acid from the C-terminus is glycine, d. The fourth amino acid...
- Use the structure of the peptide to complete the problems/questions following. O HONE CH- H-º-N CH-c o- CH2 CH-OH CH2 CH2 CH3 C=0 ΝΗ NH2 a. (4 pts) Name (full name) the N-terminal amino acid? b. (4 pts) Name (full name) the C-terminal amino acid? C. (5 pts) Using the 1 letter amino acid abbreviation, give the name of the peptide.
Question 8 Name the amino acids (full name, three-letter code, OR one-letter code) shown in the peptide. CH2 CH₂ H IL 1 H - C #M •C-N-C-C-N-c-c-N-c-c-nc-c-00 H H H 11 0 1 Н CH₂ H р CHg CH₂ CH₂ NH BIVA-A- IE * 3x X, DE ..? V GT 12pt Paragraph
Explain this question please! Name (4 ofer to the Table of Amino Acids at the beginning of the exam to help solve this problem. Polypeptide I is a 12-mer and has the following amino acid composition: Ala, Arg, 2 His, Leu, 2 Lys, 2 Phe, Ser, Thr, Trp Edman degradation of I shows that its N-terminal amino acid is His. Chymotrypsin cleavage of I yields peptide fragments A-D.Trypsin cleavage of I gives peptide fragments E-G. Shown below is the amino...
Question 5 (1 point) Saved What arrow correctly identifies a peptide bond? LED H2N -CH-CJN-CH-C-R-CHCN-CH-8 CH-OH - CH₂ CH3 Question 4 (1 point) Identify all the amino acids that can be produced using the three letter designation (Use your textbook). HN-CH-C-N-CH-C-N-CH-C-N-CH-C CH-OH CH, 0 0 Al...Gly...-Cys...-Ser Gly.-.-Ala----Glu ---Met Glu----Ala----Thr----Cys Ala-Gly-Thr-Tyr 0 0 Question 3 (1 point) Use the three letter designation for the amino acids to write the tetrapeptide order: HN-CH-C-N-CH-C-N-CH-C-N-CH-C 525-5 Ala...Gly...Cys-..-Ser Gly....Ala---- Glu---- Met Glu---- Ala...-Thr-Cys OCys...-Ala----Gly-Ser Question...