Part 2 Flashcards
What are proteins
Proteins are naturally occurring polymers of amino acids
What is the general formula for a peptide
CONH
What do you call 2 amino acids bonded together
Dipeptide
What do you call 3 amino acids bonded together
Tripeptide
What do you call many amino acids bonded together
Polypeptide(leading to protein)
What is primary structure of a protein
The sequence of amino acids
E.g lys-cys-ser-ala-cys-asp-gly-lys
What is the bonding used in a primary structure of a protein
Covalent bonding and use their bifunctionality to form the polypeptides
What are the two types of a secondary structure of protein
a-helix
B-pleated sheet
How are the secondary structure of a protein formed
From hydrogen bonds between the C=O on one amino acid and the N-H on another
What is the general shape of a tertiary structure of a protein
The chain is coiled and folded into the overall three-dimensional shape of the protein
How are the tertiary structure of a protein formed
Hydrogen bonds and disulfide bridges and ionic bonds
Which amino acids forms disulfide bridges
Cysteine
How does disulfide bridge work
Both hydrogens on each of pair of cysteine is removed forming a S-S bond
How would hydrogen bonding happen for a tertiary structure of protein
General formula for a tertiary structure of a protein
