PROTEINS

• Proteins


  The most abundant organic compounds found in any living organism
• Proteos


  A greek term meaning first place
• Proteins


  A biological polymer constructed from amino acids as its monomer
• Structural protein


  • Found in the hair of mammals
  • Fiber that makes up the tendons and ligaments
• Contractile protein


  • Provide muscular movement
• Storage protein


  • Such as ovalbumin, the main substance of egg white
• Defensive protein


  • Includes antibodies that promote protection against foreign bodies
• Transport protein


  • Such as hormones which help coordinate body activities
• Enzyme


  Serves as the chemical catalyst that changes the rate of chemical reactions
• Essential amino acids


  Proteins our body cannot produce
• Essential amino acids


  • histidine
  • isoleucine
  • leucine
  • lysine
  • methionine
  • phenylalanine
  • threonine
  • tryptophan
  • valine
• Amino acids


  Linked by a peptide bond also called the amide bond
• Antibody (Ab)


  Also known as immunoglobulins (Ig), these are Y-shapes proteins that help in protecting the body by fighting all foreign bodies called antigens
• Structural component


  • A type of protein that provides structure and support for cells
  • Examples: Actin and Myosin