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Questions and Answers
What is the approximate percentage of antibodies in plasma?
What is the approximate percentage of antibodies in plasma?
Which type of protein are antibodies?
Which type of protein are antibodies?
What is the structure of antibodies?
What is the structure of antibodies?
Which segments of the heavy chains determine the class of the antibody?
Which segments of the heavy chains determine the class of the antibody?
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How many classes of antibodies are there?
How many classes of antibodies are there?
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What determines the specificity of an antibody?
What determines the specificity of an antibody?
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How do small differences in the structure of the variable segments affect the antibody's function?
How do small differences in the structure of the variable segments affect the antibody's function?
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How many types of antibodies can B cells produce?
How many types of antibodies can B cells produce?
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What are the antigen-binding sites?
What are the antigen-binding sites?
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What is the function of transport globulins?
What is the function of transport globulins?
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Which class of antibody is responsible for allergic reactions?
Which class of antibody is responsible for allergic reactions?
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What is the function of IgA antibodies?
What is the function of IgA antibodies?
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Study Notes
- Antibodies are soluble proteins that attack foreign proteins and pathogens.
- They account for approximately 35% of the proteins in plasma.
- Antibodies are a type of globulin, along with transport globulins.
- Antibodies have a Y-shaped structure consisting of heavy and light chains.
- The constant segments of the heavy chains determine the class of the antibody.
- There are five classes of antibodies: IgG, IgE, IgD, IgM, and IgA.
- The specificity of an antibody depends on the amino acid sequence of the variable segments of the light and heavy chains.
- Small differences in the structure of the variable segments affect the precise shape of the antigen-binding site.
- B cells can produce an estimated 100 million types of antibodies, each with a different specificity.
- The antigen-binding sites are the free tips of the variable segments of the antibody molecule.
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