Proteins

1.7

What are proteins?

Linear chains of Amino Acids?

What give directionality to proteins?

Amino terminus and carboxyl terminus

What determines if an amino acid is polar or non/polar?

If the R-goup is non-polar

What is another name for the R-group?

Side chain

What bonds amino acids together?

Polypeptide bonds / covalent bonds

What are the 4 protein structures?

Primary, Secondary, Tertiary, Quaternary

What is the primary structure of a protein?

Sequence of Amino Acids

What is the secondary structure of a protein?

Folding amino acids into alpha-helix or beta-sheets

What bonds makes the shapes in the secondary structure of a protein?

Hydrogen bonds between polypeptide backbone

What is the tertiary structure of proteins?

3-D shape of proteins

What is the quaternary structure of proteins?

Multiple polypeptide units

At which stage of the protein structures is a protein functional?

Tertiary Structure

What are the 4 R-group properties?

1. Hydrophobic / Hydrophilic

2. Non-polar / Polar

3. Ionic

4. Disulfide bridges

What is a peptide bond?

Covalent bond between carboxyl group and amine group of different amino acids

Is a peptide bond dehydration synthesis or hydrolysis?

Dehydration synthesis

What determines the folds in the tertiary structure?

R-group interactions based on properties

What 4 things affect how a tertiary structure folds?

1. Hydrogen bonds

2. Hydrophobic interactions

3. Ionic interactions

4. Disulfide bridges