3.3 Molecules Flashcards
monomer of a protein
amino acid
a polymer of a protein
polypeptides
they are called this because what holds them together is
polypeptide chains
fours levels
Primary, secondary, tertiary, quarternary
primary structure
DNA, sequence determines the final shape, covalent bonds formed via dehydration synthesis peptide bond= polypeptide
secondary structure
small sections can be seen in polypeptides, H bonds between carboxyls and amines of amino acids, proteins have combos of a-helix, b-pleated sheet
tertiary structure
the final 3D shape of a single chain, hydrophobic will clump together in the middle, acidic and basic=ionic bond, hydrophicic=outside
quanternary strucutre
more than 1 polypeptide chain, held together by hydrogen bonds and hydrophobic interaction
protein denaturation
unfolding a protein
PD
conditions disrupts H bonds and ionic bonds
PD examples
increase temperature, molecules go too fast, change in PH, changes the number of ions, salinity
Protein denaturation happens in all structures except
primary
tertiary structure; acidic + basic create what bond
ionic bond
tertiary structure; cysteine creates what bond
covalent bond