a)
It must be Glycine it must occur about every three residues
b)
Modification:
Note that ther eis just an addition of the Hydroxil group... the --OH group
?-Pro-Pro-?-Ala-Pro-?-Pro-Gln-? What amino acid is represented in the sequence by a question mark? Enter your answer...
Consider the following amino acid sequence, found as part of a larger protein: Pro-Gly-Asp-Val-Gln-Phe-Asp-Ile-Arg-Ala-Asp-Gly What kind of structure do you expect this peptide segment be a part of? Where on the protein is this likely to occur?
CASE 6. A Collection of Collagen Cases Case 2 A group of investigators synthesized a series of collagen-like peptides each containing 30 amino acid residues in order to study the important interactions among the three chains in the triple helix. The following peptides were synthesized: (1) (Pro-Hyp-Gly)., (2) (Pro-Hyp-Gly).-Glu-Lys-Gly-(Pro-Hyp- Gly), and (3) Gly-Lys-Hyp-Gly-Glu-Hyp-Gly-Pro-Lys-Gly-Asp-Ala-(Gly-Ala-Hyp),-(Gly-Pro-Hyp),GV. These peptides are abbreviated (1) (POG)... (2) EK-containing peptide and (3) T3-487 in the table below. (Note that "0" is the one-letter abbreviation for hydroxyproline.) Table 6-2:Stability...
Question 12 What is the C-terminal amino acid residue in the following polypeptide? Met-Pro-Ser-His-Ile-Gly-Glu-Gln-Arg-Tyr
Question 11. Certain amino acids destabilize or prevent formation of alpha-helices. Which amino acid is more likely to be found in these structures based on its charge and R-group size? A. Glycine B. Proline C. A sequence of several Glutamate D. A sequence of several Lysine E. Alanine Question 12. Which of the following is least likely to result in protein denaturation? A) Altering net charge by changing pH B) Changing the salt concentration C) Disruption of weak interactions by...
10. The peptide shown has the amino acid sequence: A. Val-Ser-Ile-Glu-Lys B. Lys-Glu-Ile-Ser-Val C. Thr-Asp-Leu-Gln-Arg D. Val-Asp-Ile-Glu-Arg 11. Which of the following describes the entire three- dimensional structure of a single polypeptide? A. Secondary structure B. Quaternary structure C. Tertiary structure D. Primary structure 12. What is the primary driving force in the formation of protein tertiary structure? A. Energy released when additional ion pairs are formed. B. The exclusion of non-polar substances from aqueous solution. C. The formation of...
If a DNA strand has a sequence GTA, what will be the tRNA anticodon sequence? A. CAU • B. GTA C.CAT • D. GUA What are the 2 main parts of Protein synthesis? • A. Transcribing and Translating B. Prescription and Translation . C. Transcription and Translation D. Transcribing and Translating Why must an mRNA copy be made for Protein Synthesis? A. DNA must stay inside the nucleus. B. Ribosomes cannot read DNA, only RNA. C. DNA is too degenerate...