Brock Biology of Microorganisms (15th Edition)
15th Edition
ISBN: 9780134261928
Author: Michael T. Madigan, Kelly S. Bender, Daniel H. Buckley, W. Matthew Sattley, David A. Stahl
Publisher: PEARSON
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Chapter 27.4, Problem 3MQ
Describe the recombination events that produce a mature heavy-chain gene and other somatic events that further enhance antibody diversity.
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Briefly describe three ways that antibody diversity is increased.
Explain how Hypermutation contributes to antibody diversity.
Describe the three processes responsible for antibody diversity, estimating the diversity each produces.
Chapter 27 Solutions
Brock Biology of Microorganisms (15th Edition)
Ch. 27.1 - Prob. 1MQCh. 27.1 - Prob. 2MQCh. 27.1 - Distinguish between clonal deletion and clonal...Ch. 27.1 - QWhy is it necessary that all three defining...Ch. 27.2 - Identify the intrinsic and extrinsic properties of...Ch. 27.2 - Describe an epitope recognized by an antibody, and...Ch. 27.2 - Give an example for each: natural and artificial...Ch. 27.2 - QWhat properties are required for a vaccine to...Ch. 27.3 - Summarize antibody production starting with...Ch. 27.3 - Differentiate among antibody classes using...
Ch. 27.3 - Prob. 3MQCh. 27.3 - QDescribe the structural and functional...Ch. 27.4 - Draw a complete Ig molecule and identify...Ch. 27.4 - Describe antigen binding to the CDR1, 2, and 3...Ch. 27.4 - Describe the recombination events that produce a...Ch. 27.4 - QWhich Ig chains are used to construct a complete...Ch. 27.5 - Identify the cells that display MHC class I and...Ch. 27.5 - Compare the MHC I and MHC II protein structures...Ch. 27.5 - Define the sequence of events for processing and...Ch. 27.5 - QDescribe the basic structure of class I and class...Ch. 27.6 - Define polymorphism and polygeny as they apply to...Ch. 27.6 - How does a single MHC protein present many...Ch. 27.6 - QPolymorphism implies that each different MHC...Ch. 27.7 - Prob. 1MQCh. 27.7 - Identify diversity-generating mechanisms unique to...Ch. 27.7 - Describe and compare the structural features of Ig...Ch. 27.7 - QWhat diversity-generating mechanisms function to...Ch. 27.8 - Describe the mechanism used by Tc cells to...Ch. 27.8 - Describe the effector system (the cell-killing...Ch. 27.8 - Compare and contrast the roles and activities of...Ch. 27.8 - QWhat mechanism do Tc cells use to identify and...Ch. 27.9 - Discriminate between immediate hypersensitivity...Ch. 27.9 - Provide examples and mechanisms for an...Ch. 27.9 - QHow do immediate and delayed-type...Ch. 27.10 - Describe the binding site for superantigens on T...Ch. 27.10 - Compare and contrast the immunodeficiency observed...Ch. 27.10 - Prob. 3MQCh. 27.10 - Prob. 1CRCh. 27 - Antibodies of the IgA class are probably more...Ch. 27 - Prob. 2AQCh. 27 - Polymorphism implies that each different MHC...Ch. 27 - What problems would arise if a person had a...
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- Explain whether the antibody diversity is generated at the DNA or RNA level.arrow_forwardDiagram the structure of an antibody. What parts bind toantigens? Why does each antibody bind only to one or afew specific antigens?arrow_forwardMice and humans with inactivating mutations in the gene encoding activation-induced cytidine deaminase (AID) have an immunodeficiency disease known as 'hyper IgM type 2'. Since AID is the enzyme that catalyzes the conversion of cytosines in the DNA to uracils, thereby initiating the process of somatic hypermutation, why do individuals with this deficiency only produce IgM antibodies?arrow_forward
- B cells are specialized blood cells that secrete antibodies. Normally, human blood has millions of differenttypes of B cells making millions of different kinds ofantibody molecules. This variety occurs because, as described in the Fast Forward Box in Chapter 13 entitledProgrammed DNA Rearrangements and the ImmuneSystem, antibody genes undergo rearrangements in theprecursors of B cells. Individual B cell precursorsrearrange their antibody genes in different ways.In the blood of patients with cancers called B celllymphomas, almost all of the antibody molecules areall of one type, but this single type of antibody isdifferent in different lymphoma patients.a. Based on this information, provide a brief description of the genesis of B cell lymphomas, focusingon the cells that are overproliferating.arrow_forwardWhat is the variable region of an antibody? The hypervariable or complementarity-determining region? The constant region?arrow_forwardMost of the enzymes involved in immunoglobulin gene rearrangement are ubiquitously expressed in all cells of the body. However, the specific recombination events between V, J, and D gene segments that generate antibody diversity occur only in developing B cells. How do RAG-1 and RAG-2 ensure that recombination takes place at antibody gene segments?arrow_forward
- Would you expect to activate RtKs by exposing the exterior of cells to antibodies that bind to the respective proteins? Would your answer be different for GPCRs?arrow_forwardDraw a schematic diagram of a typical IgG molecule and label each of the following parts: H chains, L chains, intrachain disulfide bonds, hinge, Fab, Fc, and all the domains. Indicate which domains are involved in antigen binding.arrow_forwardDescribe the structure of immunoglobulin and the functions of the Fab and Fc portions.arrow_forward
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