10 Questions
What is the basic structure of an antibody molecule?
Two heavy chains and two light chains
What determines the specificity of an antibody?
The acid sequence in the tips of the 'Y'
What is the function of the constant region of an antibody?
Determines the mechanism used to destroy the antigen
How many major classes of antibodies are there?
5
What is the term for the proteins related to the immune system that include antibodies?
Immunoglobulins
What is the approximate number of amino acids in the region that gives antibody specificity?
110-130
How many polypeptide chains make up an antibody molecule?
4
What is the term for the proteins produced by the immune system that include antibodies?
Immunoglobulins
What is the shape of an antibody molecule?
'Y' shaped
How many classes of antibodies are there based on their constant region structure and immune function?
5
Study Notes
Antibody Structure
- Antibodies are composed of four polypeptides: two heavy chains and two light chains, forming a "Y" shaped molecule.
- The variable region (110-130 amino acids) at the tips of the "Y" shape is unique to each antibody, giving it specificity.
Antibody Classes
- There are five major classes of antibodies: IgM, IgG, IgA, IgD, and IgE.
- Each class is distinguished by its constant region structure and immune function.
- The constant region determines the mechanism used to destroy antigens.
Antibody Structure
- Antibodies are composed of four polypeptides: two heavy chains and two light chains, forming a "Y" shaped molecule.
- The variable region (110-130 amino acids) at the tips of the "Y" shape is unique to each antibody, giving it specificity.
Antibody Classes
- There are five major classes of antibodies: IgM, IgG, IgA, IgD, and IgE.
- Each class is distinguished by its constant region structure and immune function.
- The constant region determines the mechanism used to destroy antigens.
Learn about the composition of antibodies, including their polypeptide chains and variable regions. Discover the five major classes of antibodies and their distinct characteristics.
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