Proteins Flashcards
Monomers of Protein
Amino Acid
Types amino acid
20 types (9 essential, 11 non-essential)
o 3 COMPONENTS of amino acids
Amino end, carboxyl end, R-group (always changing)
Determines chemical properties
R-group
Contains nitrogen
Amino
produce protein
Ribosome
Amino acids are joined together by
peptide bonds
Between amino acid and amino end of the next animo acid
Polypeptide bond (short chain)
Polymer of 3-100 amino acid
Polypeptide (long chain)
A polypeptide longer than 100 amino acids that has a complex structure and function
Protein
4 LEVELS
Primary, Secondary, Tertiary, Quaternary
Amino acid sequence, basic peptide chain
Primary
alpha helix (circle) or beta pleated sheets (zigzag) stabilized by hydrogen bonds.
starting point of attraction
Secondary
3d shape
Stabilized by disulfide and hydrogen bonds
Created polar and non-polar areas in molecule
Tertiary
2 or more polypeptide chains are associated
Hemoglobin (5 chains) heme proteins and globin proteins
Quaternary