Proteins Flashcards
What do proteins consist of?
Amino acids joint by peptide bonds
List the 4 structures of protein
Primary
Secondary
Tertiary
Quaternary
Describe the primary protein structure
The linear sequence of amino acids
What is the primary protein structure determined by?
The sequence of DNA or RNA that codes for the protein
What does the sequence of amino acids determine?
The folding and final structure of the protein
What does the secondary protein structure refer to?
The local folding patterns of the beta sheets and alpha helices
How are beta sheets formed?
Extended strands of the protein chain
How are alpha helices formed?
Spiral arrangement of the protein chains
Describe the tertiary protein structure
Overall 3D arrangement of the entire protein molecule
What is the tertiary structure determined by?
Interactions between amino acid side chains
What does the tertiary structure determine?
The proteins function
Describe the quaternary protein structure
Arrangement of polypeptide chains into larger functional protein complex
