Modifications Of Amino Acids

Question 1

What modifications are there for amino acids

Answer 1

1) phosphorylation
2) glycosation
3) ubiquitination
4) SUMylation
5) disuphide bond
6) acetylation
7) lipidation
8) methylation
9) hydroxylaton

Question 2

What is N linked glycosylation?

Answer 2

Sugar attaches through a nitrogen within a asparigine or arginine sidegroup on the protein

Question 3

What is O linked glycosylation?

Answer 3

Sugar is attached through a oxygen on a hydroxyl group to a serine, threonine or tyrosine

Question 4

What enzyme is used for glycosylation?

Answer 4

Oligosaccharyl transferase