Peptides Flashcards
Produced through an amide formation between two amino acids
Peptides
Number of peptide bonds are always ___ less than amino acids
One
What peptide bond contains 2 amino acids
Dipeptide
What peptide bond contains 3-10 amino acids
Oligopeptides
What peptide bond contains 11-100 amino acids
Polypeptides
This structure is determined by AA sequence
Primary Structure
This structure is stabilized by hydrogen bonds
Secondary structure
What are the 2 types of secondary structures?
Alpha helix and beta pleated
What is the most common secondary structure?
Alpha helix
How many AA per turn does the Alpha helix structure contain
Approx. 3.6 AA per turn
What type of structure is keratin made out of
Alpha helix secondary structure
Percentage of alpha helix in hemoglobin
80% alpha helix
What is the pattern of Beta sheets?
Zigzags or Pleated Pattern
Classification of beta sheets
Parallel or Antiparallel
TRUE OR FALSE:
Beta sheets can be found in antibodies.
TRUE
TRUE OR FALSE:
Tertiary structure does not need amino acid sequence.
FAlSE
Assists in protein folding but not determinants of the final structure, they are not necessary but they help in protein folding.
Molecular chaperones
Composed of 2 or more polypeptide chains forming one macromolecule
Quarternary structure
Give an example of a protein that does not have a corresponding quarternary structure
Oxytocin
TRUE OR FALSE:
Not all proteins have a corresponding quarternary strucutre.
TRUE
Give an example of protein that does have a corresponding quarternary structure
Hemoglobin
Are made up of singe units of sugars called Monosaccharides
Monomer
Are made up of singe units of sugars called Disaccharides
Dimer
Makes reactions faster, an example of this type of protein are the Molecular chaperones.
Catalytic proteins
