Structure of proteins

Question 1

At a PH of 7.35-7.45,

Answer 1

The amino group gains a proton and the carboxy group loses a proton becoming negative

Question 2

Hydrophobic amino acids

Answer 2

• The bonds are stabilized by van der Waals forces
  -The R groups move away from the water

Question 3

Hydrophilic amino acids

Answer 3

• Polar molecules containing electronegative atoms like N/O
• The unequal charge allows the R group to interact with each other and with water molecules through hydrogen bonding

Question 4

Hydrophilic amino acids

Answer 4

• Polar molecules containing electronegative atoms like N/O
• The unequal charge allows the R group to interact with each other and with water molecules through hydrogen bonding

Question 5

Peptide bonds

Answer 5

The peptide bonds link two amino acids together through hydrogen bonding
the form between a hydroxyl carbon and the amino group of another amino acid. (C-N bond)

Question 6

Hydrophobic amino acids

Answer 6

R groups move away from each other

Bonds are stabilized through van der Waals forces and become temporarily charged

Question 7

Hydrophilic amino acids

Answer 7

polar molecules that contain electronegative elements (N/O)

Interacts with water

Hydrogen bonding

Question 8

Basic/ acidic hydrophilic amino acids

Answer 8

Basic: positively charged

Acidic: negatively charged

Question 9

The bonds that stabilize secondary and tertiary structure

Answer 9

they are stabilized through hydrogen bonds

Question 10

Primary protein structure?

Answer 10

Based on the sequence of the amino acid, the sequence determines the shape of the protein

Question 11

Secondary protein structure

Answer 11

The peptide backbone of the protein will fold onto itself due to the carboxyl group and amino group bonding.

Alpha helices/beta pleated sheets

Question 12

tertiary

Answer 12

3 dimensional packing due to side chain interactions

Question 13

Quaternary

Answer 13

The association of more than one protein chain