Amino Acids

Question 1

Draw the stereochemical and fischer projection of Alanine (Ala, A)

Answer 1

Question 2

Draw the stereochemical and fischer projection of Glycine (Gly, G)

Answer 2

Question 3

Draw the stereochemical and fischer projection of Tyrosine (Tyr, Y)

Answer 3

Question 4

Draw the stereochemical and fischer projection of Cysteine (Cys, C)

Answer 4

Question 5

Draw the stereochemical and fischer projections of Serine (Ser, S)

Answer 5

Question 6

Draw the stereochemical and fischer projection of Lysine (Lys, K)

Answer 6

Question 7

Draw the stereochemical and fischer projection of glutamate (Glu, E)

Answer 7

Question 8

What amino acids have ionizable side chains?

Answer 8

Tyrosine
Cysteine
Arginine
Lysine
Histidine
Aspartic Acid
Glutamic Acid

Question 9

Draw acetylation and methylation of lysine

Question 10

What are the ionizable groups in proteins?

Answer 10

-Terminal a-carboxyl group
-Terminal a-amino group
-Aspartic and glutamic acid
-Histidine
-Cysteine
-Lysine
-Tyrosine
-Arginine (always positively charged)