Protein Structure

How many amino acids are involved in the reaction to make a dipeptide

2

How many polypeptide chains are in quaternary structure of protein?

3

How many polypeptide chains are in tertiary protein model?

3

What groups in the amino acids are always involved in hydrogen bonds?

Amino group and carboxyl group

What types of bonds/interactions could asparagine form with another amino acid in chain in order to form a quaternary structure with another protein chain?

Asparagine can form hydrogen bonds w/ polar amino acids to stabilize structure

Between what 2 functional groups is the peptide bond located?

Carboxyl & Amino Acid

Which amino acids could form disulfide bonds with another amino acid in chain to stabilize tertiary structure of protein

Cytosine

What type of bond holds secondary structure in place?

Hydrogen Bonds

What bonds/interactions hold quaternary structure in place?

Hydrogen bonds, disulfide bridges, hydrophobic interactions, and ionic bonds

bonds/interactions holding QUATERNARY structure together together

Ionic bonds, hydrogen bonds, disulfide bridges, hydrophobic interactions (2 or more polypeptide chains involved)

Quaternary protein structure?

Multiple polypeptide chains fold together to create one active protein ( many but not all proteins have quaternary)

What functional groups/atoms need to be present in the R-groups for hydrogen bonding to occur between two amino acids in a protein chain?

Polar functional groups are for hydrogen bonds

What part of the amino acid participates in disulfide bridge, hydrogen bond, hydrophobic interactions, and ionic bonds?

R groups are responsible for tertiary structure

How is tertiary protein structure made?

Secondary structure folds because R groups on amino acids making functional protein

Between which 2 atoms in the dipeptide is the peptide bond located?

carbon & nitrogen

What amino acids could form hydrogen bond with another amino acid in chain to stabilize secondary structure of a b-pleated sheet

cytosine, asparagine, serine, and phenylalanine

bonds/interactions holding SECONDARY structure together

hydrogen bond (1 polypeptide chain involved)

bonds/interactions holding TERTIARY structure together

ionic bonds, hydrogen bonds. disulfide bridges & hydrophobic interactions (1 polypeptide chain involved)

What type of functional groups/atoms would need to be present in r-groups for HYDROPHOBIC interactions to occur between 2 amino acids in protein chain?

non polar functional groups

What bond/interaction holds PRIMARY structure together

peptide bonds (1 polypeptide chain involved)

Which amino acids could participate in HYDROPHOBIC INTERACTION with another amino acid in chain to stabilize tertiary structure of protein

phenylalanine

What is primary structure of a protein?

the amino acid chain that determines the function of the protein