Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Chapter 2, Problem 33P
Interpretation Introduction
Interpretation:
The given amino acid sequence needs to be translated in the one-letter-code.
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.
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o-H
HN-H
H.
Give the full amino acid name, three-letter name and one-letter names of the amino acids in the oligopeptide starting from
the amino terminal to the carboxyl terminal. Make sure that the amino acid names are arranged in CORRÉCT order
N.
HN
H3N
Where on this amino acid does it attach to a
primary sequence of a protein and where is the
ionizable position of the R group?
PRACTICE NAMING. Identify the number of amino acids, number of peptide bonds, and name
the peptide.
i.e. Ala-Cys
• Dipeptide
• 1 peptide bond
• Alanylcysteine
Cys-tyr-phe-gln-asn-cys-pro-arg-gly
Chapter 2 Solutions
Biochemistry
Ch. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - Prob. 10P
Ch. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - Prob. 21PCh. 2 - Prob. 22PCh. 2 - Prob. 23PCh. 2 - Prob. 24PCh. 2 - Prob. 25PCh. 2 - Prob. 26PCh. 2 - Prob. 27PCh. 2 - Prob. 28PCh. 2 - Prob. 29PCh. 2 - Prob. 30PCh. 2 - Prob. 31PCh. 2 - Prob. 32PCh. 2 - Prob. 33PCh. 2 - Prob. 34PCh. 2 - Prob. 35PCh. 2 - Prob. 36PCh. 2 - Prob. 37P
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- Pro-Ser-Ala-Phe-Glu. Draw this peptide at pH 7 and include its stereochemistry.arrow_forwardAmino sequence: Gln-Glu-Val-Leu-Ile-Arg-Leu-Phe-Lys-Gly-His-Pro-Glu-Thr-Leu-Glu-Lys-Phe-Asp-Lys-Phe-Lys-His-Leu-Lys-Ser-Glu-Asp-Glu-Met-Lys-Ala-Ser-Glu-Asp-Leu-Lys A) List the fragments generated with trypsin: B) List the fragments generated with chymotrypsin (5 pts) (assume reaction conditions are used to maximize cutting to the C-terminal size of only the 3 aromatic amino acids.)arrow_forwardThr-Lys-Pro-Ile-Val-Ala-Pro-Met-Glu-Tyr-Gly-Lys Write the sequence using one-letter abbreviations. sequence: TLPIVAPMGYGK Incorrect Estimate the net charge on the peptide at pH 7. charge at pH 7: +1 Estimate the net charge on the peptide at pH 12. charge at pH 12: 0 Incorrectarrow_forward
- Consider the following two peptides: I. N-Pro-Pro - Glu - Glu - Tyr - His - Cys - Ala - Glu - Gln - Lys - Leu - Ser - Ser - Phe-Leu- Thr - C II. N-Pro-Pro - Lys - Arg - Gly - Tyr - His - Gly - Glu - Asp - Glu - Asp - Glu - Ser - Gly-Phe- Tyr-C Give three reasons why_peptide I is more likely to form an alpha helix in aqueous solution at pH 7.0. Your reasons may include why_peptide Il is less likely to form an alpha helixarrow_forwardBe sure to answer all parts. Give the amino acid sequence of an octapeptide that contains the amino acids Val, Met, Asp (2 equiv), Phe, Trp, Ile, Lys, and forms the following fragments when partially hydrolyzed with HCl: Ile-Asp-Phe, Lys-Met-Val-Trp, and Phe-Asp-Lys-Met. Trp Leu Phe Leu Val Lys Gly Tyr Xarrow_forwardBe sure to answer all parts. Give the amino acid sequence of an octapeptide that contains the amino acids Lys, Pro, Tyr, Ile (2 equiv) , Gln, Trp, Phe, and forms the following fragments when partially hydrolyzed with HCl: Lys–Ile-Phe-Pro, Phe-Pro-Gln-Tyr, and Trp-Ile-Lys.arrow_forward
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- Upload a drawing of Gly-Met-Asn-Glu-His Label the alpha carbons Label the R groups as hydrophobic or hydrophilic Label the acidic and basic R-groups Label the peptide bonds Label the N terminus and the C terminusarrow_forwardIdentify. 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_forwardPlease answer the problem in the image and explain thoroughly. Thank youu.arrow_forward
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