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Protein Structures

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Protein Structures

  • Primary Structure - linear sequence of amino acids
  • Secondary Structure - three dimensional form of local segments of proteins
    • Alpha helices
    • Beta sheets - beta turns and loops
  • Tertiary Structure - overall three-dimensional structure resulting from folding, bonding, and covalent cross-linking of a protein molecule
  • Quaternary Structure - the number and arrangement of multiple folded protein subunits in a multi-subunit complex
    • Basically, tertiary structures bonded together to form a bigger, more complex structure

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Activity

Building your own protein.

  1. You will be given a DNA sequence to transcribe and translate.
  2. Then using pipe cleaners and beads, you will build your protein structure up to the quaternary structure.

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Protein Function

Proteins are known for being the workers of the cell.

They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs.

Variation of Protein Functions:

Motor Pump Enzyme

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Why is it important to learn?

Can help us modify living things to prevent infections, parasite invasion, cure diseases, etc.

Examples:

  1. Antibiotics
  2. GMOs
  3. Criminal Investigation