Biochemistry Chapter 4 notes-AP Bio Part 3 Flashcards
How is that amino acid order created
Peptide bonds between amino acids
Primary structure of proteins
The order of amino acids
How does the cell know the order of amino acids
DNA/RNA
Secondary structure
Regular, repeating 3D structures found in all polypeptide chains
How does secondary structure happen
Hydrogen bonding between atoms in the CN backbone of the polypeptide chain (no R groups involved)
Why do all proteins have similar secondary structure
Because all have the carboxyl and amino group
Tertiary structure
The specific 3D shape of a particular polypeptide chain (the conformation) how it folds up
How does tertiary structure happen
Interactions between R group atoms with other R groups and the local environments of the cell
Quaternary Structure
Not all have this
The specific 3D shape of any protein that is made of more than one polypeptide-many are
Quarternary structure is the only __________ level of structure
Optional
How does Quarternary structure happen
The overall structure when multiple chains form a functional protein
There is a direct relationship between a protein’s
Conformation and its function
What happens when the conformation is altered
The function of the protein will also be altered
Denaturation
Change in the structure of a protein. Denatured proteins don’t work well (if at all)
