BIOCHEMISTRY - L. Stryer - 1984

VOLUME 3

Part IV INFORMATION

CHAPTER 24 DNA: THE GENETIC ROLE, STRUCTURE, AND REPLICATION

    24.1. Covalent Structure and Nomenclature of DNA

    24.2. Pneumococcal Transformation by DNA Demonstrated That Genes Consist of DNA

    24.3. The Genes of Some Viruses Consist of RNA

    24.5. Complementary Strands Serve as Templates for Each Other in DNA Replication

    24.7. Some Viruses Contain Single-Stranded DNA at Certain Stages of Their Life Cycle

    24.10. Some DNA Molecules Are Circular

    24.13. DNA Polymerase Receives Instructions from the Template

    24.16. Discovery of DNA Polymerases II and III

    24.19. One DNA Strand Is Synthesized Discontinuously

    24.23. The Complexity of the Replication Apparatus Appears Necessary to Ensure Extremely High Fidelity

    24.26. DNA Contains Thymine Instead of Uracil, Which Enables the Repair of Deaminated Cytosine

    24.28. The Nucleotide Sequence of DNA Can Be Rapidly Determined by Specific Chemical Cleavage

    Summary

QUESTIONS AND PROBLEMS

CHAPTER 25. RNA INFORMATION AND TRANSCRIPTION

    25.1. RNA Structure

    25.5. Hybridization Experiments Demonstrated That Messenger RNA Is Complementary to Its Encoding DNA Template

    25.5. Hybridization Experiments Demonstrated That Messenger RNA Is Complementary to Its Encoding DNA Template

    25.8. RNA Polymerase Receives Instructions from the DNA Template

    25.11. Transcription Is Initiated at Promoter Sites on the Template DNA

    25.15. Template DNA Contains Stop Signals for Transcription

    25.18. Antibiotics as transcription inhibitors: rifampicin and actinomycin

    Conclusion

QUESTIONS AND PROBLEMS

CHAPTER 26. THE GENETIC CODE AND THE RELATIONSHIP BETWEEN GENES AND PROTEINS

    26.1. Transfer RNA is the adaptor molecule in protein synthesis

    26.2. Amino acids are encoded by triplets of bases, starting from a fixed reference point

    26.4. The codon composition of many amino acids was determined using copolymers as templates

    26.7. Main properties of the genetic code

    26.10. The base sequence of a gene and the amino acid sequence of its corresponding polypeptide are colinear

    26.13. Mutations arise from alterations in the DNA base sequence

QUESTIONS AND PROBLEMS

CHAPTER 27. PROTEIN SYNTHESIS

    27.1. Amino acids are activated and attached to transfer RNAs by specific synthetases

    27.2. The fidelity of protein synthesis is ensured by the high specificity of aminoacyl-tRNA synthetases

    27.5. Codon recognition involves the anticodon rather than the activated amino acid

    27.8. Ribosomes, the organelles of protein synthesis, consist of large and small subunits

    27.11. Messenger RNA is translated in the 5' → 3' direction

    27.15. Formation of the initiating 70S complex places formylmethionyl-tRNA in the P site

    27.18. Protein synthesis is terminated by release factors

    27.22. Certain short peptides are synthesized independently of ribosomes

    Conclusion

QUESTIONS AND PROBLEMS

CHAPTER 28. REGULATION OF GENE EXPRESSION IN THE PHENOTYPE

    28.1. β-Galactosidase is an inducible enzyme

    28.2. Discovery of the regulatory gene

    28.5. The base sequence in the lac operator is symmetrical

    28.8. Transcription of the tryptophan operon is regulated by both an attenuator and an operator

    28.11. Repressors and activators determine the development of temperate phages

    Summary

QUESTIONS AND PROBLEMS

CHAPTER 29. EUKARYOTIC CHROMOSOMES AND GENE EXPRESSION IN EUKARYOTES

    29.1. A eukaryotic chromosome contains a single double-stranded DNA molecule

    29.3. The amino acid sequences of histones H3 and H4 are nearly identical in all animals and plants

    29.6. The nucleosome is the first level of DNA condensation

    29.9. Mitochondria and chloroplasts contain their own DNA

    29.12. Genes encoding ribosomal RNAs are arranged in tandem and repeated several hundred times

    29.15. Most unique genes are interspersed with repetitive sequences

    29.20. Three types of ribosomal RNA are generated by processing a single primary transcript

    29.23. Splicing enzymes remove introns from primary transcripts of split genes with high precision

    29.26. Thalassemia is a genetically inherited disorder of hemoglobin synthesis

    29.30. Signal sequences allow secretory proteins to cross the endoplasmic reticulum membrane

    Summary

CHAPTER 30. VIRUSES

    30.1. The coat of small viruses is composed of many identical protein subunits

    30.3. During TMV particle assembly, protein disks attach to the RNA loop

    30.5. Accessory proteins and proteases participate in the ordered assembly of phage T4

    30.8. The flexibility of the CCV coat protein enables it to form an icosahedral capsid

    30.11. Poliovirus proteins are produced by multiple cleavage of a giant precursor

    30.15. Darwinian evolution of phage RNA outside the cell

    30.18. SV40 and polyoma viruses can cause a productive infection or transform host cells

    30.21. The kinase encoded by the src gene of avian sarcoma virus is involved in transformation

    Conclusions

CHAPTER 31. GENE REARRANGEMENTS: RECOMBINATION, TRANSPOSITION, AND CLONING

    31.1 Genetic recombination is based on the breakage and reunion of DNA strands

    31.2. Genetic recombination involves the pairing of homologous DNA strands to form a double-stranded intermediate

    31.5. The F factor enables bacteria to transfer genes to recipients via conjugation

    31.8. New genomes can be constructed in the laboratory and cloned in host cells

    31.11. Specific eukaryotic genes can be isolated by cloning from total genomic DNA cleaved with restriction endonucleases

    Conclusions

PART V. MOLECULAR PHYSIOLOGY

CHAPTER 32. BACTERIAL CELL ENVELOPES

    32.1. The cell wall is a giant sacculus-like macromolecule

    32.2. Stages of peptidoglycan synthesis

    32.5. Synthesis of the disaccharide-peptide subunit attached to a lipid carrier

    32.9. Penicillin causes the death of growing bacteria by inhibiting cell wall synthesis

    32.12. Gram-negative bacteria are surrounded by an outer membrane rich in lipopolysaccharides

    Conclusions

CHAPTER 33. IMMUNOGLOBULINS

    33.1. Basic definitions

    33.2. Synthesis of specific antibodies in response to an antigen

    33.5. Enzymatic cleavage of immunoglobulin G yields active fragments

    33.8. Are antibodies formed by selection or instruction?

    33.11. Each light and heavy chain consists of variable and constant regions

    33.15. X-ray crystallographic analysis of antibody-binding sites reveals how certain haptens are bound

    33.18. Variable and constant regions are encoded by separate genes that have joined together

    33.22. Joining V and J genes in various reading frames also contributes to antibody diversity

    33.25. Antibody diversity results from somatic recombination of multiple germline genes and somatic mutation

    Conclusion

CHAPTER 34. MUSCLE CONTRACTION AND CELL MOTILITY

    34.1. Muscle consists of interacting thick and thin protein filaments

    34.2. Muscle contraction involves the sliding of thick and thin filaments past one another

    34.5. Actin forms filaments that interact with myosin

    34.9. The "power stroke" involves the rotation of the actin-bound myosin S1 head

    34.13. Actin and myosin serve as contractile elements in nearly all eukaryotic cells

    34.16. Cytochalasin and phalloidin inhibit motility coupled with actin filament assembly and disassembly

    Conclusion

CHAPTER 35. HORMONE ACTION

    35.1. Discovery of cyclic AMP as a mediator of hormone action

    35.2. Cyclic AMP is synthesized by adenylate cyclase and degraded by phosphodiesterase

    35.5. Cyclic AMP activates protein kinases

    35.8. Insulin stimulates anabolic processes and inhibits catabolic processes

    35.11. Insulin receptors are localized in the plasma membrane of target cells

    35.14. Cleavage of proopiomelanocortin yields multiple peptide hormones

    35.17. Steroid hormones activate specific genes

    Conclusion

CHAPTER 36. MEMBRANE TRANSPORT

    36.1. Distinction between passive and active transport

    36.2. Discovery of the active sodium-potassium ion transport system

    36.6. The sodium-potassium pump is an oligomeric transmembrane protein

    36.9. Calcium transport is mediated by a different ATPase

    36.12. Active transport of certain sugars is coupled with their phosphorylation

    36.15. Carrier antibiotics have a nutshell-like conformation and bind ions within their central cavity

    36.18. Ions and small molecules flow from cell to cell through gap junctions

    Conclusion

CHAPTER 37. EXCITABLE MEMBRANES AND SENSORY SYSTEMS

    37.1. Action potentials are mediated by transient changes in Na+ and K+ permeability

    37.2. Tetrodotoxin and saxitoxin block sodium channels in nerve cell axon membranes

    37.5. Acetylcholine is released in quanta

    37.8. Acetylcholinesterase inhibitors are used as drugs and poisons

    37.11. Neurotransmitters also include catecholamines and γ-aminobutyric acid (GABA)

    37.14. Light induces the isomerization of 11-cis-retinal

    37.17. Light decreases cyclic GMP levels via phosphodiesterase activation

    37.20. Bacterial chemoreceptors sense specific molecules and transmit signals to flagella

    Conclusion

ANSWERS TO QUESTIONS AND PROBLEMS

APPENDICES