Protein chemistry

Question 1

Functions of proteins

Answer 1

Provide nutrition, and nitrogen to the body. Act as a control mechanism for hormones and genetic expression, and modifies the cohesiveness, viscosity and

Question 2

Acid/base proteins

Answer 2

amino groups: low pka’s- with proton
carboxyl groups: High pka’s-without proton
Protein is always charged regardless of pka and sometimes it exists at a pka of neutral charge because both charges cancel each other out.

Question 3

Hydrocarbons

Answer 3

Glycine-tiny chain which is very rotatable and makes the entire protein very rotatable

Proline-contain an aromatic ring which is very difficult to rotate and it limits the number of conformations the protein can have.

Question 4

Aromatic

Answer 4

Tryptophan
Theonine
phenoalaninine
Very non polar and hydrophobic

Question 5

Polar

Answer 5

Hydroxyls-contain a hydroxyl group
amide-contain amine group and H bonding ability is very powerful
sulfyhydral group-cysteinse can connect to other cysteine molecules with a disulfide bond
Charged-

Question 6

Acid base dissociation

Answer 6

ratio of products and reactants are forever constant

Question 7

Henderson hasselback equation function

Answer 7

one unit above and below pka creates a 10 fold increase in positive ions or negative ions on the protein molecule depending on the direction being taken.