Biochemistry
6th Edition
ISBN: 9781305577206
Author: Reginald H. Garrett, Charles M. Grisham
Publisher: Cengage Learning
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Chapter 11, Problem 11P
Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book.
Calculating Tms and Separating DNA Molecules That Differ in G:C Content At 0.2 M Na+, the melting temperature of double-stranded DNA is given by the formula, Tm = 69.3 + 0 41 (% G + C). The DNAs from mice and rats have (G + C) contents of 44% and 40%, respectively. Calculate the Tms for these DNAs in 0.2 M NaCl. If samples of these DNAs were inadvertently mixed, how might they be separated from one another?
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Chapter 11 Solutions
Biochemistry
Ch. 11 - Answers to all problems are at the end of this...Ch. 11 - Answers to all problems are at the end of this...Ch. 11 - Prob. 3PCh. 11 - Answers to all problems are at the end of this...Ch. 11 - Answers to all problems are at the end of this...Ch. 11 - Answers to all problems are at the end of this...Ch. 11 - Answers to all problems are at the end of this...Ch. 11 - Answers to all problems are at the end of this...Ch. 11 - Prob. 9PCh. 11 - Prob. 10P
Ch. 11 - Answers to all problems are at the end of this...Ch. 11 - Prob. 12PCh. 11 - Prob. 13PCh. 11 - Prob. 14PCh. 11 - Answers to all problems are at the end of this...Ch. 11 - Prob. 16PCh. 11 - Prob. 17PCh. 11 - Prob. 18PCh. 11 - Prob. 19PCh. 11 - Prob. 20PCh. 11 - Prob. 21PCh. 11 - Prob. 22PCh. 11 - Prob. 23P
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- Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Chargaff’s Rules for the Base Composition of DNA Chargaff’s results (Table 10.1) yielded a molar ratio of 1 1.29 for A to G in ox DNA, 1.43 for T to C, 1.04 for A to T, and 1.00 for G to C. Given these values, what are the approximate mole fractions of A. C, G. and T in ox DNA?arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. (Research Problem) The Nature and Roles of Linear Motifs in Proteins In addition to domains and modules, there are other significant sequence patterns in proteins—known as linear motifs—that are associated with a particular function. Consult the biochemical literature to answer the following questions: 1. What are linear motifs? 2. How are they different from domains?. 3. What are their functions? 4. How can they be characterized? 5. There are several papers that are good starting points for this problem. Neduva, V., and Russell, R., 2005. Linear motifs: evolutionary interaction switches. FEBS Letters 579:3342-3345. Gibson, T., 2009. Cell regulation: determined to signal discrete cooperation. Trends in Biochemical Sciences 34:471-482. Diella, K. Haslam, N., Chica., C. et aL, 2009. Understanding eukaryotic linear motifs and their role in cell signaling and regulation. Frontiers of Bioscience 13:6580-6603.arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Deducing DNA Sequence from Sanger Sequencing Results The output of an automated DNA sequence determination by the Sanger dideoxy chain termination method, performed as illustrated in Figure 11.3, is disp1ayed at right. What is the sequence of the original oligonucleotide?arrow_forward
- Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. B-and Z-DNA Helical Parameters II If 80% of the base pairs in a duplex DNA molecule (12.5 kbp) are in the B-conformation and 20% are in the Z-conformation, what is the length of the molecule?arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. (Historical Context) The Third Person of the -Helix Publication Who was Herman Branson? What was his role in the elucidation of the structure of the or-helix'.' Did he receive sufficient credit and recognition for his contributions? And how did the rest of his career unfold? Do a Google search on Herman Branson to learn about his life, and read the article by David Eisenberg under Further Reading. You may also wish to examine the original paper by Pauling, Corey, and Branson, as well as the following Web site: http://www.pirns. org/sitelmisclclassicsl..shtml Pauling, L., Corey, R. B., and Branson, H. R., 1951. The structure of proteins: two hydrogen-bonded helical configurations of the polypeptide chain. Proceedings of the National Academy of Sciences, USA 37:235-240.arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. The Base Sequence in the Two Polynucleotide Chairs of a DNA Double Helix Is Complementary Adhering to the convention of writing nucleotide sequences in the 5' 3' direction, what is the nucleotide sequence of the DNA strand that is complementary to d-ATCGCAACTGTCACTA?arrow_forward
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- Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Calculate the Frequency of Occurrence of an RNAi Target Sequence The RNAs acting in RNAi are about 21 nucleotides long. To judge whether it is possible to uniquely target a particular gene with a RNA of this size, consider The following calculation: What is the expected frequency of occurrence of a specific 21-nucleotide sequence?arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. DNA Supercoiling Parameters A “relaxed,� circular, double-stranded DNA molecule (1600 bp) is in a solution where conditions favor 10 bp per turn. What is the value of L0 for this DNA molecule? Suppose DNA gyrase introduces 12 negative supercoils into this molecule. What are the values of L, W, and T now? What is the superhelical density, ?arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Structural complementarity is the key to molecular recognition, a lesson learned in Chapter 1. The principle of structural complementarity is relevant to answering problems 5, 6, 7,11, 12, and 19. The quintessential example of structural complementarity in all of biology is the DNA double helix. What features of the DNA double helix exemplify structural complementarity?arrow_forward
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