BIOCHEM-ACHIEVE(FIRST DAY DISCOUNTED)
9th Edition
ISBN: 2818000069358
Author: BERG
Publisher: MAC HIGHER
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Question
Chapter 2, Problem 14P
Interpretation Introduction
Interpretation:
The amino acid composition needs to be differentiated from amino acid sequence.
Concept introduction:
Amino acids are organic compounds containing amino as well as
Here, R group is different for different amino acids. This group can be acidic, basic or neutral.
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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
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NH,"
B
D
What are their names, three-letter abbreviations, and one-letter
symbols?
Optical isomerism of amino acids. L and D amino acids. Chiral centers of amino acids. Give examples of amino acids that do not have optical isomers.
Draw 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.
Chapter 2 Solutions
BIOCHEM-ACHIEVE(FIRST DAY DISCOUNTED)
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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Similar questions
- 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-glyarrow_forwardLong explanations are not needed. Answers and brief descriptions would be enough. During the formation of the peptide bond which of the following takes place? a. Hydrogen atom is lost from its carboxyl group of one amino acid and a hydrogen atom is lost from the amino group of another amino acid. b. Hydrogen atom is lost from its carboxyl group of one amino acid and a hydroxyl group is lost from the amino group of another amino acid. c. Hydroxyl group is lost from its carboxyl group of one amino acid and a hydroxyl group is lost from the amino group of another amino acid. d. Hydroxyl group is lost from its carboxyl group of one amino acid and a hydrogen atom is lost from the amino group of another amino acid.arrow_forwardN. 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?arrow_forward
- Cysteine and Aspartate: draw the amino acid side chain and give the single and three letter abbreviation.arrow_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_forwardPro-Ser-Ala-Phe-Glu. Draw this peptide at pH 7 and include its stereochemistry.arrow_forward
- Activity: Write the line structure of each of the following peptide at pH7 and identify how many peptide bond in each number. 1. Glycyl-valyl-serine 2. Threonyl-cysteine 3. Isoleucyl-methionyl-aspartatearrow_forwardAlpha-helix of proteins, its characteristics. Draw a diagram of the arrangement of amino acids in the alpha helix. Examples of proteins formed mainly by this structure.arrow_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_forward
- The number of distinct protein folds in limited. Why might this be so?arrow_forward. Consider the structure of the amino acid aspartic acid. Indicate the hybridization about each interior atom. H Harrow_forwardBe sure to answer all parts. Give the amino acid sequence of an octapeptide that contains the amino acids Thr, Phe, Ile (2 equiv), Asp, Cys, Val, Leu, and forms the following fragments when partially hydrolyzed with HCl: Thr-Ile-Phe, Phe-Ile-Asp-Val, and Asp-Val-Cys-Leu.arrow_forward
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