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EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
7th Edition
ISBN: 8220100853180
Author: STOKER
Publisher: CENGAGE L
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Textbook Question
Chapter 20, Problem 20.66EP
With the help of Table 20-1, assign an IUPAC name to each of the following small peptides.
- a. Cys–Ser
- b. Val–Ala–Gly
- c. Tyr–Gln–Asp
- d. Phe–Met–Tyr–Asn
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Assign IUPAC names to each of the following small peptides.Gly-Ala-Leu Gly-Tyr-Ser-Ser
Given the peptide Lys-Glu-Trp
a) Draw the appropriate titration curve for this peptide. Label X and Y axis
b) On the graph use X to mark point at which peptide have 0 net charge and Y to mark point where peptide have positive 1 net charge
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Chapter 20 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
Ch. 20.1 - Prob. 1QQCh. 20.1 - Proteins are naturally occurring unbranched...Ch. 20.2 - Prob. 1QQCh. 20.2 - How do the various standard amino acids differ...Ch. 20.2 - The number of carboxyl groups and amino groups...Ch. 20.2 - How many different subclassifications are there...Ch. 20.2 - Which of the following statements concerning...Ch. 20.3 - Prob. 1QQCh. 20.3 - Proteins from plant sources are a. always complete...Ch. 20.3 - Prob. 3QQ
Ch. 20.4 - Prob. 1QQCh. 20.4 - Which of the following groups is positioned at the...Ch. 20.4 - Which of the following statements concerning...Ch. 20.5 - Which of the standard amino acids exist as...Ch. 20.5 - Which of the following is the zwitterion ion...Ch. 20.5 - Which of the following is the structural form for...Ch. 20.6 - Prob. 1QQCh. 20.6 - Prob. 2QQCh. 20.7 - The joining together of two amino acids to form a...Ch. 20.7 - The number of peptide bonds present in a...Ch. 20.7 - Which of the following statements concerning the...Ch. 20.7 - Prob. 4QQCh. 20.7 - How many isomeric tripeptides can be formed from...Ch. 20.8 - The two best-known peptide hormones present in the...Ch. 20.8 - Which of the following peptides is an important...Ch. 20.9 - The term protein is generally reserved for...Ch. 20.9 - Prob. 2QQCh. 20.9 - Which of the following is not a distinguishing...Ch. 20.10 - Specifying the primary structure of a protein...Ch. 20.10 - Prob. 2QQCh. 20.10 - Prob. 3QQCh. 20.11 - Prob. 1QQCh. 20.11 - Prob. 2QQCh. 20.11 - Prob. 3QQCh. 20.12 - Prob. 1QQCh. 20.12 - Hydrophobic interactions associated with protein...Ch. 20.12 - R group interactions between which of the...Ch. 20.13 - Prob. 1QQCh. 20.13 - Which of the following types of interactions does...Ch. 20.14 - The complete hydrolysis of a protein produces a...Ch. 20.14 - Which of the following statements concerning...Ch. 20.15 - Which of the following levels of protein structure...Ch. 20.15 - Which of the following does not involve protein...Ch. 20.15 - Prob. 3QQCh. 20.16 - Prob. 1QQCh. 20.16 - Prob. 2QQCh. 20.16 - Prob. 3QQCh. 20.16 - In which of the following pairs of proteins are...Ch. 20.17 - Insulin and human growth hormone are examples of...Ch. 20.17 - Myoglobin and transferrin are examples of a....Ch. 20.17 - Prob. 3QQCh. 20.18 - Prob. 1QQCh. 20.18 - Prob. 2QQCh. 20.18 - Prob. 3QQCh. 20.19 - Prob. 1QQCh. 20.19 - Which of the following types of plasma...Ch. 20.19 - Prob. 3QQCh. 20 - Prob. 20.1EPCh. 20 - What element is always present in proteins that is...Ch. 20 - What percent of a cells overall mass is accounted...Ch. 20 - Approximately how many different proteins are...Ch. 20 - What is signified when an amino acid is designated...Ch. 20 - What functional groups are present in all -amino...Ch. 20 - Indicate whether or not each of the following...Ch. 20 - Indicate whether or not each of the following...Ch. 20 - How many carbon atoms are present in the R group...Ch. 20 - How many carbon atoms are present in the R group...Ch. 20 - With the help of Table 20-1, determine the name...Ch. 20 - With the help of Table 20-1, determine the name...Ch. 20 - With the help of Table 20-1, classify each of the...Ch. 20 - With the help of Table 20-1, classify each of the...Ch. 20 - Prob. 20.15EPCh. 20 - With the help of Table 20-1, classify each of the...Ch. 20 - Prob. 20.17EPCh. 20 - Prob. 20.18EPCh. 20 - Prob. 20.19EPCh. 20 - Prob. 20.20EPCh. 20 - Prob. 20.21EPCh. 20 - How many amino groups and how many carboxyl groups...Ch. 20 - Prob. 20.23EPCh. 20 - Which two of the standard amino acids are...Ch. 20 - Prob. 20.25EPCh. 20 - Prob. 20.26EPCh. 20 - Prob. 20.27EPCh. 20 - Prob. 20.28EPCh. 20 - Prob. 20.29EPCh. 20 - Prob. 20.30EPCh. 20 - Indicate whether or not the designation...Ch. 20 - Indicate whether or not the designation...Ch. 20 - Prob. 20.33EPCh. 20 - Prob. 20.34EPCh. 20 - To which family of mirror-image isomers do nearly...Ch. 20 - In what way is the structure of glycine different...Ch. 20 - Draw Fischer projection formulas for the following...Ch. 20 - Draw Fischer projection formulas for the following...Ch. 20 - Answer the following questions about the amino...Ch. 20 - Answer the following questions about the amino...Ch. 20 - At room temperature, amino acids are solids with...Ch. 20 - At room temperature, most amino acids are not very...Ch. 20 - Prob. 20.43EPCh. 20 - Draw the zwitterion structure for each of the...Ch. 20 - Draw the structure of serine at each of the...Ch. 20 - Prob. 20.46EPCh. 20 - Prob. 20.47EPCh. 20 - Most amino acids have isoelectric points between...Ch. 20 - Glutamic acid exists in two low-pH forms instead...Ch. 20 - Arginine exists in two high-pH forms instead of...Ch. 20 - In a low-pH aqueous solution, indicate whether...Ch. 20 - Prob. 20.52EPCh. 20 - When two cysteine molecules dimerize, what happens...Ch. 20 - What chemical reaction involving the cysteine...Ch. 20 - What two functional groups are involved in the...Ch. 20 - Write a generalized structural representation for...Ch. 20 - For the tripeptide GlyAlaCys a. What amino acid is...Ch. 20 - For the tripeptide SerValMet a. What amino acid is...Ch. 20 - Prob. 20.59EPCh. 20 - Prob. 20.60EPCh. 20 - Draw a complete condensed structural...Ch. 20 - Draw a complete condensed structural...Ch. 20 - With the help of Table 20-1, identify the amino...Ch. 20 - With the help of Table 20-1, identify the amino...Ch. 20 - With the help of Table 20-1, assign an IUPAC name...Ch. 20 - With the help of Table 20-1, assign an IUPAC name...Ch. 20 - Prob. 20.67EPCh. 20 - Prob. 20.68EPCh. 20 - For the tripeptide AlaValGly which amino acid...Ch. 20 - For the tripeptide SerArgIle which amino acid...Ch. 20 - Consider the tripeptide tyrosylleucylisoleucine....Ch. 20 - Consider the tripeptide leucylvalyltryptophan. a....Ch. 20 - Explain why the notations SerCys and CysSer...Ch. 20 - Explain why the notations AlaGlyValAla and...Ch. 20 - Prob. 20.75EPCh. 20 - There are a total of six different amino acid...Ch. 20 - Compare the structures of the protein hormones...Ch. 20 - Compare the protein hormones oxytocin and...Ch. 20 - Compare the binding-site locations in the brain...Ch. 20 - Compare the structures of the peptide...Ch. 20 - Prob. 20.81EPCh. 20 - Prob. 20.82EPCh. 20 - What is the major difference between a monomeric...Ch. 20 - What is the major difference between a simple...Ch. 20 - Prob. 20.85EPCh. 20 - Prob. 20.86EPCh. 20 - Prob. 20.87EPCh. 20 - Two proteins with the same amino acid composition...Ch. 20 - How many different primary structures are possible...Ch. 20 - How many different primary structures are possible...Ch. 20 - How many different primary structures are possible...Ch. 20 - How many different primary structures are possible...Ch. 20 - Prob. 20.93EPCh. 20 - Draw a segment of the backbone of a protein that...Ch. 20 - Prob. 20.95EPCh. 20 - In a pleated sheet secondary structure for a...Ch. 20 - Indicate whether each of the following statements...Ch. 20 - Indicate whether each of the following statements...Ch. 20 - Prob. 20.99EPCh. 20 - Prob. 20.100EPCh. 20 - State the four types of attractive forces that...Ch. 20 - Prob. 20.102EPCh. 20 - Prob. 20.103EPCh. 20 - Prob. 20.104EPCh. 20 - Prob. 20.105EPCh. 20 - Prob. 20.106EPCh. 20 - Prob. 20.107EPCh. 20 - Prob. 20.108EPCh. 20 - Prob. 20.109EPCh. 20 - Not all proteins have quaternary structure....Ch. 20 - Prob. 20.111EPCh. 20 - Prob. 20.112EPCh. 20 - Prob. 20.113EPCh. 20 - Prob. 20.114EPCh. 20 - Prob. 20.115EPCh. 20 - Prob. 20.116EPCh. 20 - Prob. 20.117EPCh. 20 - Prob. 20.118EPCh. 20 - Identify the primary structure of a hexapeptide...Ch. 20 - Identify the primary structure of a hexapeptide...Ch. 20 - Draw structural formulas for the products obtained...Ch. 20 - Prob. 20.122EPCh. 20 - Which structural levels of a protein are affected...Ch. 20 - Prob. 20.124EPCh. 20 - In what way is the protein in a cooked egg the...Ch. 20 - Why is cooked protein more easily digested than...Ch. 20 - Indicate whether or not each of the following...Ch. 20 - Prob. 20.128EPCh. 20 - Prob. 20.129EPCh. 20 - Contrast fibrous and globular proteins in terms of...Ch. 20 - Classify each of the following proteins as a...Ch. 20 - What is the major biochemical function of each of...Ch. 20 - Prob. 20.133EPCh. 20 - Prob. 20.134EPCh. 20 - Prob. 20.135EPCh. 20 - Prob. 20.136EPCh. 20 - Prob. 20.137EPCh. 20 - Where are the carbohydrate units located in...Ch. 20 - Prob. 20.139EPCh. 20 - Prob. 20.140EPCh. 20 - Prob. 20.141EPCh. 20 - Prob. 20.142EPCh. 20 - Prob. 20.143EPCh. 20 - Describe the process by which blood...Ch. 20 - Prob. 20.145EPCh. 20 - Prob. 20.146EPCh. 20 - Prob. 20.147EPCh. 20 - Prob. 20.148EPCh. 20 - Prob. 20.149EPCh. 20 - Prob. 20.150EPCh. 20 - Prob. 20.151EPCh. 20 - Prob. 20.152EP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Consider the following peptide: Lys-Tyr-Glu-His-Arg-Ala-Asp-Arg-Glu-Tyr-Lys a) What is the net charge of this peptide at pH=1? Show your work. b) What is the net charge of this peptide at pH=14? Show your work.arrow_forwardFor the peptide Ala-Cys-His-Ile-Leu-Asp a. Write the single letter code for the amino acid residues b. What is the charge of the peptide at pH 7.0. Assign the following pKa values: 3,4,6,8,9 c. What is the pI of the peptidearrow_forwardI was given an amino acid position 564 with the PDC code 2V1X. Would it be possible to describe why this position in the protein is important and outline the effects the mutation will have on the structure / function of the protein? Thank you.arrow_forward
- Following the IUPAC rules for naming small peptides, assign a name for Leu–Lys–Trp–Metarrow_forwardDraw the structure of the peptide: Val-His-Leu-Thr-Pro-Val-Glu-Lys-Ser-Ala-Val-Thr What is the significance of the peptide described?arrow_forwardA decapeptide was analyzed and the following information obtained. Determine the primary structure of the peptide. Edman's Degradation: PTH-Ala Trypsin produces 3 peptides of the following composition: 1. Gly, His 2. Ala, Leu, Lys, Val 3. Arg (2), Phe, Pro Chymotrypsin produces 2 peptides of the following composition: 1. Ala, Leu, Lys, Phe, Val 2. Arg (2), Gly, His, Pro Elastase produces 1 amino acids and 3 peptides 1. Ala 2. Leu, Val 3. Arg (2), Lys, Phe, Pro, Gly, His Arg Gly His Leu Phe Pro Valarrow_forward
- The following questions refer to the peptide with a sequence of: Asp-Ser-Lys-Asn-Glu a) Would you expect this peptide to be soluble in water? Why or why not?arrow_forwardName the following biomolecules. In the case of peptides, alos provide 3 - letter codes.arrow_forwardConsider the peptides Pro-Gin-Val-Phe-His-Asp-Cys and His-Gln-Pro-Cys-Asp-Phe-Val. How do these two peptides differ? (Select all that apply.) The two peptides have different compositions. The two peptides have different isoelectric points. The two peptides have different titration curves. The two peptides differ in amino acid sequence. [References] If you were to have a mythical amino acid based on glutamic acid, but one in which the hydrogen that is attached to the y-carbon were replaced by another amino group, what would be the predominant form of this amino acid at pH 12 if the pK, value were 10 for the unique amino group? (Select all that apply.) Both of the carboxyl groups are deprotonated. The amino acid-carries a negative 2 charge. The amino acid carries a negative 4 charge. The amino groups are in the form -NH". Both of the amino groups are deprotonated.arrow_forward
- identify the interaction that may be produced between the side chain of amino acid residues found at the N-terminus and the C-terminus of the peptide. List all possible peptides that can be formed from the given peptide (use three character/letter abbreviations for each amino acid, i.e., Ala-Gly-Val). NOTE: Any excess will be deducted to the correct answers. Be careful in evaluating your answers.arrow_forwardH CH₂ H₂C HC-CH3 CH₂ H H₂C (S) H₂C H CH₂ CH₂ CH₂ NH O C NH NH₂ a) Which of the following statements about this peptide are correct? Group of answer choices Treatment of this peptide with trypsin generates two products. This peptide is a substrate for carboxypeptidase A Treatment of this peptide with cyanogen bromide generates a pentapeptide and a tripeptide. Treatment of this peptide with chymotrypsin generates three products. Treatment of this peptide with elastase generates 2 products. None of the above statements are correct. b) What is the sequence of this peptide using one letter abbreviations? c) What is the pH which would correspond to the ionization of the peptide as drawn above? 1, 5, 7, 10, 14arrow_forwardThe sequence of a 29 aa long peptide can be determined from the following data. a) Treatment of the peptide with dansyl chloride reveals that the amino terminal is Val. b) Trypsin digestion, separation of peptides and Edman degradation give sequences for peptide fragments as follows: Val-Gly-Ala-His-Ala-Gly-Glu-Tyr-Gly-Ala-Glu-Ala-Thr-Glu Ala-Ala-Trp-Gly-Lys Val-Leu-Ser-Pro-Ala-Lys Thr-Asn-Val-Lys c) Chymotrypsin digestion, separation of peptides, and Edman degradation give the following sequences for fragments: Gly-Ala-Glu-Ala-Thr-Glu Gly-Lys-Val-Gly-Ala-His-Ala-Gly-Glu-Tyr Val-Leu-Ser-Pro-Ala-Lys-Thr-Asn-Val-Lys-Ala-Ala-Trp What is the sequence for the peptide?arrow_forward
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