Antibody - Bi Sci 001 Wednesday April 14,1999 Announcements...

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Bi Sci 001 Wednesday April 14,1999 Announcements: Lecture notes: Antibody An antibody is a type of receptor with a specific binding site for 1 type of antigen. ANTIBODIES ARE PROTEINS. It is produced by B-cells and by decedents of B-cells called plasma cells. (Effector Cells) Each B-cell produces just one type of antibody which it displays on its cell membrane at maturity. B-cells that haven't come in contact with antigen are called virgin B-cells. Antibody molecules are shaped like a Y. The amino acid sequence has constant regions at the base and fork of the Y, and variable regions at the tips of the arms of the Y. This is what allows for the millions of different antibodies we can produce. **BE CAREFUL: ANTIBODY ABD ANTIGEN - DON'T MIX THEM UP** Types of Antibodies There are five classes of antibodies, each with slightly different shapes and each with different functions. Collectively, they are called the Immunoglobulins. They form a large part of the proteins that circulate in the blood and lymph.
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  • Spring '99
  • Schlegel
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