Concept explainers
(a)
Interpretation:
The three amino acids present in the given protein segment needs to be identified.
Concept introduction:
Amino acids are compounds containing amino as well as acidic group. The general molecular structure of an amino acid is as follows:
Here, R is different group for different amino acids. If there is more than one amino group present in an amino acid, they are considered as basic amino acids and if there is more than one carboxylic group then they are considered as acidic amino acids.
(b)
Interpretation:
The N-terminal amino acid needs to be determined.
Concept introduction:
Amino acids are compounds containing amino as well as acidic group. The general molecular structure of an amino acid is as follows:
Here, R is different group for different amino acids. If there is more than one amino group present in an amino acid, they are considered as basic amino acids and if there is more than one carboxylic group then they are considered as acidic amino acids. The protein segment is made from N to C-terminal that is from amino group to the carboxylic group.
(c)
Interpretation:
The peptide bonds need to be identified.
Concept introduction Amino acids are compounds containing amino as well as acidic group. The general molecular structure of an amino acid is as follows:
Here, R is different group for different amino acids. If there is more than one amino group present in an amino acid, they are considered as basic amino acids and if there is more than one carboxylic group then they are considered as acidic amino acids.
(d)
Interpretation:
The alpha-carbon atoms need to be identified.
Concept introduction:
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BIOCHEMISTRY
- Identify. Examine the following four amino acids (A-D): Co0 "H,N- CH "H,N CH "H;N-CH "H,N CH CH2 CH2 CH, CH CH2 CH3 CH, CH2 OH NH," B D What are their names, three-letter abbreviations, and one-letter symbols?arrow_forwardExplain well. Asaparrow_forwarda.Describe the bonds which hold a quaternary protein molecule together. b. Discuss the reasons why glycine and proline are not usually found in an alpha helix of proteins.arrow_forward
- A. One example of conjugated protein that contains the following Prosthetic groups: a. Iron Protein class, Example, b. Lipids Protein class, Example, c. Phosphate group Protein class, Example, d. Carbohydrate Protein class, Example, е. Heme Protein class, Example,arrow_forwarda. A tetrapeptide is abbreviated as PSQE. Write the name of the amino acid at the N-terminal end. b. A tetrapeptide is abbreviated as FRWL. Write the name of the amino acid at the C-terminal end.arrow_forwardE. PROTEIN PRIMARY STRUCTURE ELUCIDATION. 1. Determine the primary structure of the protein described below. Write the final sequence using the corresponding three-letter code for each amino acid. Example: M-F-Y-R should be written as Met-Phe-Tyr-Arg Treatment with cyanogen bromide and sequencing yields the following peptide fragments: o D-M o R-A-Y-G-N o L-F-M Chymotrypsin digestion and sequencing yields the following peptide fragments: o G-N D-M-L-F o M-R-A-Y o oarrow_forward
- The number of distinct protein folds in limited. Why might this be so?arrow_forwardA peptide bond... is a version of an ester bond is a version of an amide bond is the basis of protein secondary structure is formed by addition of waterarrow_forwardDraw any pentapeptide. All C-O, C-N, and C-S bonds must be written out, as well as all N-H, S-H, and O-H atoms/bonds. Your peptide must include at least one amino acid from each of the major classes of amino acids (i.e. charged, polar, etc.). Circle each peptide bond in this peptide.arrow_forward
- Chemistry A. if a protein had two aspartic acid R groups interacting at pH 2, what kind of interaction would you see in its tertiary structure? B. draw the tripeptide Gly-His-Glu at pH 7.arrow_forwarda. The graph to the right displays the degree of helicity that was measured for a peptide as nine additional amino acids were sequentially added to the initial amino acid. Describe the reasons that the helicity curve takes the shape that it does as amino acids are added on to the small peptide.arrow_forwardconsider the given peptidesarrow_forward
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